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View Full Version : 7900GTX - how many watts?


TheOriginalTB
08-20-2007, 01:49 PM
First of all - sorry if this is under the wrong category.

Does anybody know how many watts a 7900GTX comsumes in 2D and in 3D mode? And roughtly how to calculate the watts when overclocked to say 666/940?

(I need it to calculate the needed radiator for my setup)

Truckchase!
08-20-2007, 03:14 PM
First of all - sorry if this is under the wrong category.

Does anybody know how many watts a 7900GTX comsumes in 2D and in 3D mode? And roughtly how to calculate the watts when overclocked to say 666/940?

(I need it to calculate the needed radiator for my setup)

http://www.techreport.com/reviews/2006q1/geforce-7600-7900/index.x?pg=13

For overclocking, I just increase the consumption by the % of my overclock. Not scientific I know, but I think it's a good guesstimate for PSU/Watercooling sizing.

TheOriginalTB
08-21-2007, 03:28 AM
Thanks for the link, but it's total system wattage. I have measured my systems total draw to be around the same as on that graph. But what I'm looking for is how much heat (watts) the chip itself dissipates.

I have three 120mm single rads (Swiftech/Cooltek) and I want to know if they will be able to cool both my CPU, Northbridge, ram AND GPU ;)

Truckchase!
08-21-2007, 09:04 AM
Thanks for the link, but it's total system wattage. I have measured my systems total draw to be around the same as on that graph. But what I'm looking for is how much heat (watts) the chip itself dissipates.

I have three 120mm single rads (Swiftech/Cooltek) and I want to know if they will be able to cool both my CPU, Northbridge, ram AND GPU ;)

My bad, I didn't read all the way through that....try this one on for size:

http://www.xbitlabs.com/articles/video/display/geforce7900gtx_6.html#sect0

If any of your rads are dual pass it should be easier...