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CF HD6950 AND 750 WATT PSU?

Last response: in Graphics & Displays
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December 21, 2010 7:05:33 PM

WILL A SEASONIC 750 WATT PSU BE ADEQUATE FOR TWO HD6950'S? AND WILL MY AMD 965 AT 3.91 BOTTLENECK THEIR PERFORMANCE i WILL BE PLAYING AT 1920 BY 1200 AND HAVE 8GIGS OF DDR3 RAM?

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December 21, 2010 7:09:56 PM
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A Seasonic 750W PSU should be perfectly suitable. That's a good quality maker. Considering the 6950 requires a 450W PSU, you should be very safe with a 750W for Crossfire. Your 965 @ 3.91Ghz should probably be fine for most applications.

ATI 6950 2GB @ Load = 256W says Bit-Tech (at the wall).
http://www.bit-tech.net/hardware/2010/12/16/ati-radeon-...

ATI 6950 Crossfire + i7-970 = 479W

Source: http://www.legitreviews.com/article/1488/18/

December 21, 2010 7:21:38 PM

Yeah that PSU is more than enough so you shouldn't worry about it. As for the bottleneck yeah your CPU will hold those two cards back in alot of situations, but who cares? At 1900x1200 with Full AA and AF (which I assume you wanted if you got those two cards) your CPU generally shouldn't be a limiting factor.
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December 21, 2010 7:28:18 PM

Best answer selected by jijoslin.
December 21, 2010 7:29:39 PM

okay what about cf6970
December 21, 2010 7:35:38 PM

megamanx00 said:
Yeah that PSU is more than enough so you shouldn't worry about it. As for the bottleneck yeah your CPU will hold those two cards back in alot of situations, but who cares? At 1900x1200 with Full AA and AF (which I assume you wanted if you got those two cards) your CPU generally shouldn't be a limiting factor.

I mainly play games on a 25.5 inh asus single dispay, will there be a significant bottleneck for most games?
December 21, 2010 7:54:21 PM

The higher your resolution, the less bottleneck will be evident. This is because the higher your resolution is, the more demand is actually placed on the GPUs. Ultimately, with two very powerful cards the bottleneck is probably going to keep you below 100FPS :(  :(  :(  LOL

Since most LCD monitors have a 60hz refresh rate, you aren't going to actually notice the bottleneck in most circumstances. Now, if you got a 120Hz 3D Monitor, I could see a chance of actually seeing the bottleneck affect as you'd need 120FPS to realize 3D (which is really an nVidia thing anyhow).

You should be fine. Would a higher Overclock help? Sure. As would using an Intel CPU, just because they're faster clock for clock. (i.e. an i5/i7 @ 3.91Ghz is faster than your 965 @ 3.91Ghz).
December 21, 2010 7:57:47 PM

This topic has been closed by Mousemonkey
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