Compatible Power Supply for H-RS880 uATX Mobo

February 28, 2011 at 10:02:32
Specs: Windows 7
My HP desktop came with a 300w P/S however I would like to purchase one between 450 to 550w. After contacting HP tech support they informed me that I could not install any power supply over 300w, is this true. I thought there were no restrictions on the power supply. Any response would be greatly appreciated. PS: the reason I would like to upgrade my P/S is I am looking to install a much better video card and requires this type of P/S.

See More: Compatible Power Supply for H-RS880 uATX Mobo

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February 28, 2011 at 11:14:57
Here's your board specs:

Is it in a full size case? If it is, you should be able to upgrade the power supply to whatever wattage you feel you need. If you have a Slim style case, you're going to have problems finding something to fit.

You may want to have a look at the following article to help you select a decent gaming card:

Best Graphics Cards For The Money: February 2011

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February 28, 2011 at 13:37:45
Thank you for your quick response, however, I do have a question regarding the power supply and motherboard compatibility. Are there special requirements for the motherboard as to the power supply in general? As the tech from HP stated that I cannot use a P/S over 300w, I just want to make sure I don't burn the motherboard if I choose to use a P/S around 500-550w. Thank you again.

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February 28, 2011 at 15:30:16
There is no limitation on a power supply. It still only feeds 12 volts, no matter what the wattage. I don't know why he would say that.

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Related Solutions

February 28, 2011 at 16:07:00
A power supply unit (PSU) will only deliver the amount of watts the system requires. For example, if you have a 500W PSU & your system only requires 300W, that's all the PSU will produce. It won't sit there churning away at 500W with 200W going to waste.

Don't buy a $20-25 generic cheapie. Get a decent name brand unit that has a single +12v rail of at least 28A, active PFC & 80 plus efficiency.

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