Solved want to upgrade power supply

August 21, 2013 at 16:35:57
Specs: Windows XP, Pentium D
Hi. I have an older dell e-520 with the original 320 watt power supply. Because of the number of periferals and other upgrades I have on ths comp, I'd like to put in a larger power source. I'm thinking about 450 -500 watts. Since I've never done this before, I mean I can handle the installation and all , but what should I be aware of and look for when I go looking for the new power supply? Is there anything that might jeopardize the system I already have? The computer has one of those next to useless Pentium D processors. Is there anything that I need to match to the new power supply, or install with it? Thanks, any insight you can give me is greatly appreciated.

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August 21, 2013 at 16:54:28
Please see this thread:

It looks like most ATX PSU's will fit, just keep an eye on the length. I believe with the PD you will need the 24Pin & 4pin CPU cables (not 8 pin). If you can send a pic of your motherboard with peripherals, it would be easier to let you know what you will need out of the PSU. A lot of the newer Intel CPU's (Corei) require an extra 8pin from the power supply to the motherboard, but its usually in a 4+4 on the PSU for backwards compatibility.

As far as how many 4 pin molex, PCI-X, SATA, etc. connections you will need, we need to know what is in the system (e.g. hard drives, dvd drive, video card, tv tuner, etc. etc. etc.) (can probably get all that from pictures).

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August 21, 2013 at 18:49:15
✔ Best Answer
Do you want upgrade the PSU because you actually need to, or because you think you need to? Are you currently having power related problems?

"what should I be aware of and look for when I go looking for the new power supply?"

Other than having the proper number of & type of connectors, the PSU should meet the following criteria:

- 80 plus certified
- active PFC (power factor correction)
- single +12v rail of at least 30A
- +3.3v & +5v rails should be approx 20-25A (no more than 30A) each
- 3-5 yr warranty
- reputable name brand

This Corsair 430W is a forum favorite, right now it's $32.50 after promo code & rebate, very often it's on sale for $20-25 after rebate:

You might wanna consider this Corsair 500W for $40 after rebate instead:

EDIT: prices changed since I posted yesterday, I made the adjustments in my descriptions.

message edited by riider

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August 23, 2013 at 18:09:57
I agree with riider, unless you upgraded to a more powerful graphics card, you probably do not need to upgrade the power supply, though if you might consider using it for a future custom computer build, it would not be a bad thing.
The recommendations lists are good ones for the price range. Cheap power supplies are not an upgrade, regardless of the published wattage.

You have to be a little bit crazy to keep you from going insane.

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