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View Full Version : Is my power supply enough for a 7900 GS


konjecture
03-05-07, 03:52 AM
I have a dell E521 Dimension desktop, I am using geforce 7600 GT 256 MB with my 305 W power supply. I am planning to upgrade to a 7900 GS, so I was wondering if I need to change the PSU or is the 305 W power supply enough. here are my comp specs

AMD Athlon X2 Dual Core 3800+
2 GB DDR2 RAM (512 x 4)
nvidia geforce 7600 GT 256 MB GDDR3 video memory
160 GB hard drive

jcrox
03-05-07, 07:02 AM
Your system didn't come with google??
350w power supply minimum for 7900GS.

konjecture
03-05-07, 01:47 PM
well i did google it but it seems like they always say that the minimum PSU for a 7600 GT is 350 W whereas I am using it in a 305W PSU and it runs fine.

So I was wondering is the minimum PSU req for a 7900 GS always true(350W) or can I still use the 305W. If its really not necessary then I dont want to change it.

Bman212121
03-05-07, 01:51 PM
well i did google it but it seems like they always say that the minimum PSU for a 7600 GT is 350 W whereas I am using it in a 305W PSU and it runs fine.

So I was wondering is the minimum PSU req for a 7900 GS always true(350W) or can I still use the 305W. If its really not necessary then I dont want to change it.


I would have to imagine that if you can run the one card, you can probably run the other one. A 7900GS should be a refresh, which usually uses less power. I'll go see if I can find something for you.

Btw, welcome to the forums. :)

Bman212121
03-05-07, 01:55 PM
well i did google it but it seems like they always say that the minimum PSU for a 7600 GT is 350 W whereas I am using it in a 305W PSU and it runs fine.

So I was wondering is the minimum PSU req for a 7900 GS always true(350W) or can I still use the 305W. If its really not necessary then I dont want to change it.

I've got it, perfect benchmark right here. http://www.anandtech.com/video/showdoc.aspx?i=2874&p=20

On idle the 7900GS is about 6 watts more, but under load it is one watt less for power draw. You should be fine making the upgrade. Also note that their configured system is only about 150W, which shows that in reality, a good PSU shouldn't have any problems handling it, even if they state it needs 350W.