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Archive for the "Computers" Category

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Top 5 most popular power supply Manufacturers

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A computer power supply unit (Computer PSU) is the part that supplies power to a computer. More explicitly, a power supply is typically designed to convert 100-120 V (North America and Japan) or 220-240 V (Europe, Africa, Asia and Australia) AC power from the mains to usable low-voltage DC power for the internal components of the computer. Some power supplies have a switch to change between 230 V and 115 V. Other models have automatic sensors that switch input voltage automatically, or are able to accept any voltage between those limits.

The most common computer power supplies are built to conform to the ATX form factor. This enables different power supplies to be interchangeable with different components inside the computer. ATX power supplies also are designed to turn on and off using a signal from the motherboard (PS-ON wire, which can be shorted to ground to turn on the PSU outside the computer), and provide support for modern functions such as the standby mode available in many computers.

The top most popular power supply Manufacturers are:

 Dell
 Micro ATX
 FSP
 Compaq
 Bestec

It’s important for the end-users to know the quality of a power supply. The specs of power supplies are simply printed on stickers. Don’t be fooled by them! The stickers can be easily removed and replaced. Even the manufacturers might place a 300W sticker on an otherwise 250W power supply. Once products are shipped it is quiet rare for any private or public entity to go back and verify the specs on the sticker. However, it’s difficult, if not impossible, for a dishonest vendor to alter the weight of a power supply. Most case manufacturers do not make their own power supplies. They often use power supplies that are re-labeled as their brands. One good way to identify the true manufacturer of a power supply is to look at the circuit board on which the manufacture name is often printed. Power supplies are also heavily cross-branded.

There is a popular misconception that a greater power capacity (watt output capacity) is always better. Since supplies are self-certified, a manufacturer's claims may be double or more what is actually provided. Although a too-large power supply will have an extra margin of safety as far as not over-loading, a larger unit is often less efficient at lower loads (under 20% of its total capability) and therefore will waste more electricity than a more appropriately sized unit. Additionally, computer power supplies generally do not function properly if they are too lightly loaded. Under no-load conditions they may shut down or malfunction..

How Many Drives?

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Back in the day when the humble Pc came about there was pretty much only one type of storage device that you really needed to know about and that was your hard drive. Sure there were a few others to be fair but they were so hellishly expensive that only massive companies could afford them.

O
f course we also had ram memory wish is a type of storage medium but it cost so much and you got so little that it never really figured, but boy oh boy how times have changed, and if you have not kept up to date with whats available – sit down and buckle up as we go on a storage ride.

NAS, SAN, Snap Devices, kind of sounds like a breakfast cereal doesn’t it? Well here’s the explanation.

N
AS, SAN, SNAP Devices are Network Attached Storage (NAS), Storage Area Network (SAN) and, System Network Attached Protocol (SNAP).

Essentially in laymans terms these tend to be large storage drives that are external to a particular server but provide a centralised data store area for companies data.

It s often cheaper to have large amounts of data external to a server or they could be for back up purposes but if these fail you will need to call out the data recovery company.

External Drives

External Drives are essentially hard drives that sit outside of your computer and attach to it by a usb cable. These are great if you want extra storage on your Pc or want to back up your own data just in case.

S
SD

Solid State Drive (SSD) is the newest form of data storage device and SSD devices are gradually increasing in size. They are very fast and because they have no moving parts are potentially more reliable.

They are still very expensive but are tipped to eventually replace the hard drive.

Flash Memory Sticks and Memory Cards

These are essentially small portable storage devices with no moving parts just like an SSD. These devices are getting very large in their capacity and have become the prefeerd method of easily moving data around or for use in cameras and digital video recorders.

And of course you now have ever increasing amounts of storage in your phone and in your MP3 and MP4 player as well principally due to the fact that memory is now a whole lot cheaper than it used to be.

So thats a whistle stop tour of current technology and if you want to get more information about technology visit technology explained for useful and informative help..

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