Computer Help forum


power supply question

by pal5510 / July 9, 2012 6:52 AM PDT

I have an old HP A656X desktop that needs a new power supply. The current power supply is a bestec atx 250w 12Z Rev. D2. I'm trying to keep the cost as low as possible. I've seen power supplies that have that model # without the D2 part. Is that essential? It seems that I could get a new one for $18.00 free shipping without the D2 but with D2 it's a used model for the same price or about $25-30.00 new.

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Clarification Request
Model numbers don't have to match?
by pal5510 / July 9, 2012 12:35 PM PDT
In reply to: power supply question

It's obvious I'm clueless about this stuff. I checked the PSUs on the link you provided and see the model numbers aren't anything close. So, if I understand correctly as long as it fits in the space and it's equal to or more wattage it doesn't matter if the numbers match? Is the ATX a designation that makes them work?

I'll definitely take your advice on the higher wattage. Thanks for taking the time.

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If you want.
by R. Proffitt Forum moderator / July 9, 2012 3:40 PM PDT

You can look at the mechanical dimensions, the pins of the power connections and more. But from what I see, it's an ATX supply with some thousands of possible replacements.

All Answers

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It looks like a run of the mill ATX PSU.
by R. Proffitt Forum moderator / July 9, 2012 7:03 AM PDT
In reply to: power supply question
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Don't forget better PSUs are usually more efficient
by VAPCMD / July 9, 2012 9:49 AM PDT
In reply to: power supply question

and use less electricity than an inexpensive 250-300 watt PSU. You may spend more upfront but use less electricity spending less in the long run. If you can spring for a better one, it also a good component for another system.

Good Luck

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