Tag Archives: CPU

The Important Computer Components

Every person who wishes to buy a new computer must be careful about the little things, specifically the specs of the computer. Computer components are the crucial things to be inspected as you make that technological investment. Before you set off buying that computer for you, you should first make sure that you are aware of the different computer components which you need to inspect as you scan your options. So what are these important computer components? Here they are:

CPU Also known as the Central Processing Unit. This is perhaps the most important part of the computer components in its most general sense. The CPU houses the memory and all the hardware components responsible for the timely transfer of data within the computer. The CPU is also known as the brain of your computer because this facilitates the entire working functions of your computer components. This is also the component which is responsible for setting off the speed of your computers capacity. With this in mind, your CPU is often measured in terms of gigahertz or GHz.

Mother Board The mother board acts like a transmission venue for your computer components. This is where your keyboard and mouse gets wired to your entire computer processor. In addition, the mother board also connects other computer components to be reflected on your monitor. It is connected to both the hardware and the software computer components of your entire system. It seemingly provides a house of skeletal framework for your individual hardwares and just the same, it also facilitates file transfers between different data.

RAM Also known as the Random Access Memory. This particular part of your computer components tells you just how much memory you can store on your computer. This is also a crucial component because if you have it at exceedingly low levels, you may not be able to open files or even facilitate making documents and other types of files on your computer. A memory is not just important for storing and saving data but it is also a crucial aspect that helps keep data become more visible than ever.

Hard Disk This is perhaps the most wrongly understood part of all the computer components. Some people tend to interchange its functions with the RAM and other memory capacity. Among the computer components, you can refer to the hard disk as some sort of support system for your computer. How? Because it houses the memory of your entire computer as it is turned off. While your computer is running, the RAM is the one responsible in keeping its operational functions. But when turned off, your computer components memory goes to this safe place known as the hard disk.

Knowing these important Computer Componentsis important because it helps you know what type of specs you should look for when buying a new computer system for yourself. In this way, you can easily find the one that suits you best. Computer components are always a crucial thing to know because it helps save you from the fatal mistake of buying something thats not meant for you.

Top Three Computer Gpu Companies

The GPU, otherwise known as the graphics processing unit, acts as the processor of a PC video card. The GPU’s relationship with the video card is comparable to that shared between the CPU and the computer.

The GPU is usually integrated into the computer motherboard, but more powerful ones are usually incorporated in dedicated video cards. The GPU contains a graphics chip that allows PC video cards to render and display graphics and images. The processing power of the graphics chip determines the overall efficiency and effectiveness of the GPU and the video card.

Nvidia, ATI and Intel are the three leading GPU manufacturers worldwide.

* Nvidia

Founded in 1993, Nvidia has firmly established itself as a world leader in GPU production. Its brand name products include the GeForce graphics cards for both desktop PCs and notebook computers. Nvidia also developed the SLI (Scalable Link Interface) technology which permits a computer to run two to four PC video cards simultaneously. Nvidia is headquartered in Santa Clara, California.


ATI began as ATI Technologies Inc. in 1985. The company was absorbed by Advanced Micro Devices in 2006 and renamed ATI Technologies ULC. ATI and Nvidia are tough competitors with product line-ups that are at par with each other. When Nvidia released its SLI technology in 2004, ATI was quick to counter Nvidia’s SLI video cards with its own CrossFire video cards.

* Intel

Intel is a large PC company whose products span CPUs, motherboards, PC video cards and other electrical hardware. Intel’s Graphics Media Accelerators are commonly integrated on many motherboards, permitting computers to display graphics without the aid of a separate dedicated video card. Based in Santa Clara, California, Intel is neighbors with Nvidia.

When it comes to integrated graphics, Intel rules. For powerful dedicated PC video cards, computer users will most probably make a choice between Nvidia and ATI.

How Do Viruses And Worms Affect Your Computer

Also, unlike viruses that most commonly infect an individual computer, the worms usually attack a computer network. A computer network functions by using a collection of servers and routers. This is what the internet is comprised of. A server is like a PC but has more speed and storage and a router is a server with specialized functions, it directs traffic through the network.
PC Security – Worm Viruses, Deadliest of All

A virus attacks the unit used to run programs on the computer called the central processing unit or CPU for short. It does this by running programs and being constantly busy, so that none of the functions you select can be opened. Similarly, this is how a worm functions on a network. The routers rely on memory and processing time (similar to the CPU functions). These are attacked and as a result the network drastically slows down.

Worms carry payloads which are comprised of other types of malware, backdoor installations or spyware. Spyware is a monitoring program that can keep an eye on activities on your computer and backdoor programs set up hidden access points used by hackers to steal your information or send spam.

My Doom sent out at the beginning of 2004, was the fastest spreading worm to date. The worm came in the form of an email with the message “andy; I’m just doing my job, nothing personal, sorry.”

Although the culprit was never found, its intended victim is thought to have been a software company called Santa Cruz Operation or SCO for short.

When a person opened this email, the worm was programmed to overwhelm SCO’s website with traffic. The worm spread through the internet and caused a massive slow down.

For the individual computer, the worm’s payload is more serious because it allows ports to be opened on the computer where hackers have access to steal or delete information. In addition, a payload may come with a program to attack your antivirus software and disable it.

De worming

Using firewalls will help protect your computer. Firewalls reduce traffic and hide your computer. In this state, you are less likely to be attacked by worms spread over the network.

Be careful not to open suspicious emails and if you don’t know the person or get and unexpected email don’t open it. If you find your computer is slow and reboots by itself or the internet is sluggish, you may have been infected. Try running antivirus software to check it out. If that doesn’t work, try to manually removing the virus. Information as to how this is done can be found on the internet.

The Function Of Cooling Fan In Cpu

When you switch on the computer and start working for some time you would notice the heat that is been produced by some parts of it. In order o cool down these parts and to ward off the heat the fans are used in the computers. The main cooling agent in the computer is the CPU cooling fan. If the heat that is generated is not dispersed then it might cause some serious damage to some parts of the computers. Even though the computers are designed in such a way that suits this generation but still in order to reduce the heat from it the special cooling agent is always been used in it.

Some of the main functions of the CPU cooling fans are it puts out the heat and allows the fresh air to come in to the system. These cooling fans are been fitted in the mother boards and even on the hard drives. There are about some 3 to 4 fans on the central processing unit. In those days the computers were designed in such a way that there would be the only ventilation made of aluminum sink with some fans attached to it. But that would not be enough for the computers that are in nowadays. Nowadays the computers are used for around 12 to 15 hours a day so aluminum sink would not be enough for it to provide sufficient ventilation. So the cooling fans were introduced and it was proved that it is very economical and efficient in order to use the computers for longer time.

The main function of the cooling fan in CPU is to keep the Central Processing Unit cool. But there could be some obstruction in the functioning of CPU cooling fan such as Dust. The Dust settles on the blades of the fans in order to reduce the functioning capabilities. It would also require the regular maintenance in order to keep the CPU cooling fan in the working condition.

Most of us would not realize the importance of these cooling fans. This is due to the lack of the knowledge and even the ignorance about the components. So it would be important for the computer literate to know about all the peripherals in the machine and even their functions. This would not help you in maintaining it, but would also help you to avoid the damage that can be done to the component.

Even the Laptops would generate lot of heat, even though they have been well equipped with the proper cooling system. Overheating would also cause some severe damage to the system and at times would even stop its function. All the laptops would be attached with the coolers, which functions similar to that of the CPU cooling fan.

There are number of fans that are available in the market, so you could have an option of selecting any one depending upon their magnitude of the work that it would do to your machine. Before you get one, you need to consult anyone who would know about it or do some researches.

What To Expect From A Sager Np 7280 Gaming Laptop Computer

The serious gamer used to always prefer a desktop computer to laptop computer as a result if the enormous power that their components have, because they are easy to upgrade, and because they are flexible. However, if portability is an issue, there are some very good laptops available that will match any desktop. These PCs come with the Core i7 CPU which is the processor that is highly recommended for a gaming machine, the high quality NVIDA or ATI discrete graphic cards, and between 4 Gigabyte and 8 Gigabyte of RAM with as much as a terabyte of storage capacity.

These PCs are known as desktop replacements and most of them have poor battery life, are heave, and large. There are numerous specialized boutique shops and brands that will allow you customize a PC that you buy from them to make it look like you want and they will install all of the newest components in it. However, this kind of an endeavor is quite expensive.

If you can afford it the Sager NP7280 gaming laptop computer you can expect some significant advantages that your average machine doesn’t have. It is available with a Corei7 950 CPU made by Intel that runs at 3.06 Giga Hertz, two NVIDA GeForce GTX 460 Ms’ in SLI mode, and a 17″ gaming display. You can also expect this PC to be available with a 3.0 Megapixel webcam, 6 Gigabyte DDR3 1066 Mega Hertz of memory, two 320 Gigabyte hard drives, and a very fast 160 Gigabyte X25 M SSD Processor made by Intel.

There is also a lot of connectivity availability with a Super Speed USB3.0, and although it is expensive, is available with lifetime 24/7 phone support, a one year parts and three year labor warranty. That’s just the beginning of the components that this machine can include. The NP7280 gaming laptop is somewhat large, but you have to expect that with these kinds of computers. If money is no object, this is the ultimate portable laptop for serious gamers and demanding enthusiasts alike. This machine is ready to play games. Here are some of the standard specifications.

Battery: 12 cell (approximately 2.5 hours).
Optical: DVD burner.
Storage: 160 Gigabyte SSD, two 320 Gigabyte 7,200 RPM hard drives.
Graphics: Two NVIDA GeForce GTX 460M 1.5 Gigabytes for a total of 3.0 Gigabytes.
Weight: 1.2 pounds (12 cells).
Size of Display: 17.3 inch (1920X1080).
Memory: 6 Gigabytes DDR 3 1333 (3 DIMMs)
Processor: Core i7 950 3.06 Giga Hertz made by Intel.
Starting Price: $2109 ($2, 810 as configured).

Advantages Of Buying Refurbished Computers

The main advantage to buy refurbished computers is better price option. You will get a discount PC without wasting your hard earned dollars. New computers are expensive. If want to save few dollars on your digital devices, its better for you to buy used computers from online shops.

However, before the final selection of refurbished computers, you should talk to engineers to recheck cheap computers. Due to repeated usages, few essential chips in the second hand computers can be worn out. Experts will overhaul the interior parts of the CPU and UPS of the computers which are reconditioned. Check the warranty schemes on the refurbished computers.

There are many companies which have huge collection of used laptops, and desktop computers. These reconditioned personal computers are sold at auctions or in the online closeouts. The customizable reconditioned computers run well if proper maintenance is done to ensure better life expectancy of these used LCD accessories.

The demand for refurbished computers is increasing as people like to use cheap computers. In private training institutes, refurbished computers are installed for practices. Novice trainees should not be given first hand computers for doing trials. In that case, well tuned refurbished laptop computers are excellent.

Reliable companies also offer money back guarantee in the event of detection of any defect in used computers within the warranty period. So, consumers are getting advantages to buy reconditioned computers on good terms. On the other hand, for regular demonstrations at any training institute or a college, refurbished laptops come handy. The condition of reconditioned computers should be good. Therefore, before buying any used laptop, Mac and tablet computer, you must enquire of the technical configuration of the used system.

Try to buy used computers launched by well known companies. In this connection, every customer should read the previous reports and product details to learn about the performance rate of used computers. Do an online comparison study to find the best reconditioned computer with a used LCD which works well.

Cost of the refurbished computers is low in comparison to first hand devices. Therefore, you need to know about the current prices of new computers. At the same time, you must do investigations to get information about the given prices of used computers. Depending on sizes, shapes and technical advancement, prices can bob up or down. A used LCD computer is cheaper than the newly built Mac computer with a flat screen. Finally, you must read the tech spec sheet to be knowledgeable about the availability of sophisticated chips in the used computer.

Not Just Your Home Office – Necessary Computers That You Ought To Get

Once you have decided to equip an office area for the family, what could be the next step? Determining if you should choose a desktop, laptop, or tablet is your next choice.

First consider a desktop. The usefulness of desktops is that they can have the best components. In addition, the hardware is generally easy to access, so you can add better components to it in the future, instead of getting another brand new computer. You could upgrade the graphics card, or add a hard drive. Desktops also often have six or more USB ports, whereas laptops and tablets only have two or three. The fastest CPUs and GPUs need big cooling fans, and these can only fit inside a desktop. Desktops also can display to multiple monitors. The downside of desktops is that they are not portable. They are designed to stay on your desk. If you need the fastest possible computer, then a desktop is certainly an excellent selection. Excellent desktop manufacturers are Acer, Lenovo, and Toshiba.

Laptops are more compact and portable compared to traditional desktops. They used to be less speedy than desktop models, but recently, laptop computers are just about as useful as desktop models, for most everything but the most power hungry programming. One drawback of laptops is their small size, and chips installed in them are designed to run cool. This means that they can’t have the big fans that are needed by the most powerful CPU’s. You will usually encounter 4 GB RAM in a laptop. Additionally, there are fewer USB ports. The hardware is precisely installed, and swapping components after you own the computer will be challenging. Some brands allow you to increase the RAM. What you get is portability. You can have a mobile lifestyle. Excellent laptop manufacturers are Apple and MSI.

Tablets can be thought of as laptops without a keyboard. With the commercialization of touch screens, tablets are now available. Lots of businesses build laptop and tablet combination computers. Alternatively, you can acquire a separate removable keyboard for a few tablets. Tablets are first and foremost portable, and light. They are usually able to port their screen image to large screen monitors as well. You might not think that a tablet would make a good office computer. Think again because tablets are much better than they used to be. As an example, you can browse the web. You can also give presentations. If you are a retailer, you can use your tablet like a cash register, and process credit cards. Tablets use one of three major operating systems. For example, iOS. Excellent tablet suppliers are Toshiba and MSI.

Whichever computer you go with, you must contemplate data storage. Computers have internal hard drives. One option you have to keep your data backed up at home is to select an external hard drive. Go for a rotational drive or an SSD. You may want to consider the cloud for extended storage. For transporting data on a routine basis, or for increasing the storage capacity of a laptop, you can easily invest in SD and micro SD cards. These work with tablets and laptops. Cameras and phones also use SD cards. USB Drives are widespread and make it easy to move files from desktop to laptop or to share data with a friend. Not all tablets have USB ports. Sony Memory Sticks are used exclusively in Sony branded products. Good flash memory brands are Lexar, ADATA, and MiniPro.

The Car Computer Failure Problems

Cars damaged when the computer can pull to repair the computer, the following test tool used to launch x431, lexia3, mb star. Here are some computer malfunction:

The first is part of the computer power supply failure. Generally because the vehicle charging, the charger voltage regulation due to too high, or reversed polarity or charge while opening key, or even start the motor, or engine during operation, causing the battery connector loose generator directly to your computer board power supply and other reasons. This will generally burn high-power components such as voltage regulator diode, change can be relatively easy to repair.

The second is the input / output part of the fault. Amplification circuit element is usually burned, sometimes accompanied by follow-steel lines blown circuit board. For example: a repair shop in Taiwan and USA Chevrolet sedan on a renovation of paint and found that the engine can not start, and if you open the keys over time, gasoline from the exhaust pipe, oil pan, etc. overflow. Open the keys and found that all six fuel injectors are fully open state, gasoline directly from the nozzle into the cylinder, flow over after the overflow, check the external circuit found no problems, it can be concluded that the output of the computer control failure. Detection methods can be used is launch x431. Open the computer case examination revealed nozzle control signals on the amplified high-power transistor has a breakdown short circuit, causing power nozzle that is normally open state. Replacement of a similar type of transistor and clean up after replacing engine oil, the engine can operate normally. To note here: Many EFI vehicles through paint, then start all kinds of faults often occur, because after the car interior through the paint, especially in circuit accumulated heat within the device and heat, and the heat from the inside slowly comes out of the depths, and electrical equipment to work easily in the high temperature failure. Therefore, do not immediately drive the truck out after baking, but should be cooled through the full start, if the production of stress need to free paint room, you can use human power to push the car, let it cool down, the re-start.

A third part is the memory failure. A total of four kinds of memory, read-only memory (ROM) is used to store computer monitoring program that the computer itself, some of the procedures that must be run. Programmable read-only memory (EPROM or EEPROM) is mainly used to store for the implementation of devices or other control devices for the control program. Such as: fuel injection control, ignition advance angle control. Idle speed control and self-diagnostic procedures. Random Access Memory (RAM) for temporary storage of data from various sensors for CPU use; also the fault code storage systems. Random memory contents will disappear after the power failure. Need to know this detection technology lexia3. Adaptive memory (random access memory belonging to a) for the computer’s “self-learning” and in accordance with vehicle speed, automatically adjusts the parameters. Such as “idle learn” and so on. To eliminate the programmable memory (EPROM or EEPROM) problems can be replaced, need to find a well-known memory chip with program content, buy a blank chip with the model, by writer, from the read the original film program, and then to write to a blank chip, new chip can be copied, and then the new chip into the computer. But most car manufacturers are set up to only copy 3-7 times more than the number of after no longer using, and some manufacturers make chips by means of an encryption can not be copied.

Last case is a special failure. Off by the flooding of vehicles, computers plate corrosion occurs, the component pin circuit, adhesion or component damage, can repair or replace components by check. For example: a repair shop received a Cadillac car repair, fault phenomenon: when the normal operation of the engine if the on / off headlights or other electrical equipment, exhaust pipes blasting phenomenon occurs, the exhaust pipe can be serious burst. Better detection technology is mb star. The inspection found that the external circuit is not the problem, suspect faulty computer, open the computer box carefully monitored and found that a ground wire for corrosion circuit, the grounding line is the oxygen sensor signal shielded cable inside the computer grounded through the location, because Duanlu to shielding failure, caused by oxygen sensor signal interference caused by other appliances, with a tin solder through time, that is back to normal.

These are some common computer failures will be encountered in the actual work a variety of fault phenomena, as long as a clear principle, and acquire a certain way, analyze specific issues, finally has a solution.

The Webwatcher

There are many legitimate and valid reasons why programs that track keystrokes and website visits may be installed on certain computers. Parents may be concerned about which sites their young children have exposure to or schools may try to curb access to questionable sites. But there are also potentially harmful applications when these programs are installed without your knowledge or consent. Is it possible that a program like Webwatcher is tracking your online movements?

What is Webwatcher?

Webwatcher is a parental control software program, which is designed to allow parents to read email and instant messages, track keystrokes, take pictures of the screen, and monitor which websites have been viewed, all from a remote location. It is geared towards parents who want to ensure that their children are safe while surfing online. If they do visit questionable sites or make contact with strangers, parents are notified and can take appropriate action.

Webwatcher can be a great tool for parents, who cannot physically be with their children all the time. However, this technology can also be used for less altruistic purposes. It becomes problematic when it is installed on your computer, as an adult, without your knowledge. If someone has access to your computer and a few moments alone to download the software, then they are able to put Webwatcher on your computer and monitor it from any location. They no longer need any direct access to your computer, and they will be able to view websites you visit and other data you enter, which can include personal or financial information.

Is Webwatcher Installed on My Computer?

Because children tend to be more tech-savvy than their parents, Webwatcher is designed to be invisible. Children do not know that their being monitored, giving parents an accurate account of what their children do and see while on the internet. The program is not on the list of running processes in the Task Manager, nor are there visible files. Webwatcher is able to get around firewalls and antivirus programs, which means children will not accidentally find it when running a virus scan or searching for other files. Webwatcher is so effective at running without detection that it meets safety standards of worldwide intelligence agencies and various law enforcement agencies have used the program as an investigative tool.

While this is beneficial for parents who wish to monitor their childrens online activity, it makes it virtually impossible to detect its presence on your computer. And while it is beneficial for parents of young children and teenagers, as an adult computer user, it becomes an invasion of privacy that can have potentially damaging consequences. If Webwatcher is installed on your computer, you may notice a slowing in performance. Like rogue programs, Webwatcher also resides in the virtual memory and will divert more of your computers resources to its operation. This leaves less for your programs, making even simple tasks slower. If you check your CPU usage when you have no programs running and find that you are using much more of your memory capacity than you should be, then that is a good indication that there is a rogue or hidden program in your system.

What if Webwatcher is Installed on My Computer?

As mentioned, Webwatcher may cause a slowdown in your computers performance, but if used as intended, it is perfectly safe for your system. Unlike rogue programs, Webwatcher does not usher in malware, adware, or spyware or cause technical difficulties in your computer. You wont notice an increase in pop-ups. This is why it is ideal as a parental control tool. If it is installed on an adults computer without consent by someone with negative intentions, then it allows access to all of your information. The websites you visit can be tracked, and if you use online banking services or vendors, then it is a possibility that the person monitoring can see your financial information and use it for their own gain.

How Does Webwatcher Become Installed?

Unlike rogue antivirus programs and other forms of malware, Webwatcher has to be directly installed on your computer. That is, you do not pick up a virus through a trojan and inadvertently download Webwatcher. Someone has to be at your computer and download the software directly. From there, it can be monitored from any computer. Parents are typically the ones who download Webwatcher because they are concerned for their childrens safety. When used for purposes other than parental concern, Webwatcher can be installed by anyone with access to your computer, such as spouses, employers or employees, or friends.

If you suspect that this program is installed on your computer, then it is advisable to take steps to remove Webwatcher as soon as possible. To prevent it from being downloaded, it is always good to use caution by limiting access to your computer if appropriate or protecting it with a password.

What Is Switch Mode Power Supply

Switch Mode Power Supply

Switch Mode Power Supply

Every electrical or electronic device needs power for work and the computer is not exception to it. Computers, too, have a particularly designed power supply component known as Switch Mode Power Supply (SMPS). SMPS converts raw input power to controlled voltage and current for the operation of various components of the computer. SMPS uses switches for high efficiency. The primary function of SMPS is to convert the alternating current (AC) power available in homes into direct current (DC) required for a computer system. In desktop computers, a metal box found in the corner of the CPU case supplies
power to various components in the CPU box. The power supply converts 115-230 volt AC into DC that is required for computer components to work.

The terms such as voltage, AC, DC, etc., are closely associated with the power supply or SMPS. Voltage is an electric potential difference between two points and is measured in volts. AC stands for alternating current. It is an electric
current whose magnitude and direction vary cyclically. DC stands for direct current. It is considered as the constant flow of electrons in a single direction from low to high potential. Computers use DC power. Because of the advantage of alternating current over direct current in transforming and transmission, electric power distribution today is nearly everywhere alternating current.

The SMPS or power supply of a computer comes in different form factor styles. The form factor refers to the physical dimensions of a component. The form factor of the power supply must match with the form factor of the computer case into which the SMPS is inserted. There are various industry standard form factors available. Some of the commonly used form factors with their characteristics are given below:
1. LPX
2. ATX
3. SFX

The LPX form factor style power supply has exactly the same motherboard and disk drive connectors as the previous standard power supply form factors. LPX form factor power supply differs in its reduced size that allows building much smaller and consumer oriented PCs. Due to their small size, they can be put into almost every type of computer cases.

The ATX form factor is developed by Intel in 1995. ATX is similar to LPX in physical dimensions. The difference between the two is that the power pass through-outlet for the monitor has been removed from ATX. Another difference is that in ATX, the cooling fan is mounted along the inner side of the power supply. With this kind of arrangement, the fan draws air in from the
back of the chassis and blows it inside across the motherboard.

The SFX form factor style power supply is 100 mm wide, 125 mm deep, and 63.5 mm in height. It includes a 60 mm power supply fan for cooling. The main SFX motherboard connector is in the same shape and size as the ATX connector. The one difference here is that the SFX power supply specification does not support the -5V compatibility voltage and, therefore, should not be used with motherboards that have ISA slots.

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