Dell Dimension (E521) PSU upgrade

  drybones 11:03 05 Dec 08

can anyone suggest a half decent psu to upgrade this pc, old one is starting to get noisy,also the cpu fan is getting a bit iffy but I have read somewhere that this can be upgraded but you loose some functions any idea what these are ? Thanking you in advance as some one always comes up trumps.

  Fruit Bat /\0/\ 14:47 05 Dec 08

Can't see how changing a PSU will lose some functions unless you don't have the right connections on the new PSU to plug in certain items.

If renewing a PSU check:

1. The physical size of your PSU, some are hard to replace due to being a non standard size.
2. The amount of power need from the PSU don't skimp.
3 The correct connections for your equipment

1. Physical Dimensions

Besides the specs and form factors, the physical dimensions are also important factors in selecting a compatible power supply. Here is an outline of the physical dimensions of most standard power supplies:

# ATX: 6x3.5x5.5", HxWxD. Most common. Uses 4 mounting screws.
# Mini-ATX: 5x3.5x5", HxWxD. Rare size. Uses 4 mounting screws. Can be used in a regular ATX case, but often not the other way around.
# MicroATX: 5x3x4", HxWxD. Use 3 mounting screws. Not interchangeable with ATX or miniATX.
# Flex ATX: Even smaller than Micro ATX. Various sizes according to case specs; often not interchangeable.

Use the data above to determine if a particular power supply would fit your case.

The quality of a power supply can be estimated by its weight. While this is not a true scientific or thorough measurement of the power supply reliability, it is nevertheless a very simple and easy way for ordinary PC users to estimate and compare the quality of a power supply. Why weight matters click here

2. Power supply calculator click here

3. Correct connections
Some boards have 20 pin connectors others 24 pin
There is often a 4 pin plug required to power Intel CPUs
Molex D plugs for IDE HDD and CD/DVD drives
SATA power connections for latest HDDs and DVD drives.

Guide to changing PSU
click here
click here

  drybones 17:29 05 Dec 08

Fruit Bat.
According to the calculator the PSU in the pc is of sufficeint size 305watts charts says 285 required so perhaps a new Dell psu would be as quiete as existing one was once.
The changes bit was re-ferring to the cpu cooling fan I read somewhere that the speed of the control was affected if you used a none Dell fan have you come across this I have had a good look in the forums and not seen any refence to this. Thanks for reply

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