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Crossfire 6990 what cpu speed ?

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February 4, 2012 11:09:00 AM

Hi guys ! i really really need you guys to get my vision clearer lol :p 

i have 2 radeon hd 6990 and im wondering if my spu will bottleneck them : (

my rig:

mobo: asus p5e3 deluxe x38 and 45 nm cpu ready
cpu: core 2 extreme 12 MB-45 nm-overclocked at 4ghz
psu: 8o+ 1200w
ram: kingston hyperX 1333mhz 8gb

but seriously my cpu is actually beating the most i7 cpus maybe except the i7 extreme and the most expensive i7 cpus
so i really really hope that is gonna work lol :o  :( 

please help : (
a b à CPUs
February 4, 2012 11:35:28 AM

I would think that anything over 3 GHz would be able to keep up. You seem to be in fine shape.
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February 4, 2012 1:22:34 PM

4Ghz Core 2? Should be fine. Is it a quad or dual core though?
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February 6, 2012 10:10:08 PM

its a 4 cores ; )
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a c 185 à CPUs
February 6, 2012 10:31:40 PM

which extreme one?
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a c 472 à CPUs
February 7, 2012 2:54:28 AM

Given that whatever Core 2 Quad Extreme you have, running it a 4.0GHz should not bottleneck the HD 6990.
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February 7, 2012 5:35:55 AM

but in dual crossfire 6990 then ? lol :p 
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a c 185 à CPUs
February 8, 2012 2:04:04 AM

Thats why I am wondering what core 2 extreme you have.
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a b à CPUs
February 8, 2012 7:59:42 AM

You had better read these two articles before you think of using the 2 cards together in one rig...
http://www.techpowerup.com/reviews/Powercolor/Radeon_HD...
And
http://www.guru3d.com/article/his-radeon-hd-6990-crossf...
Hmmm
http://www.hardwareheaven.com/reviews/1128/pg11/sapphir...
Oh...
http://www.overclock3d.net/reviews/gpu_displays/powerco...

Now, that would really make me think about a lot of things.....
Are the bragging rights worth the work this Quadfire setup will do on a 17'' Monitor?
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a c 185 à CPUs
February 9, 2012 6:19:24 AM

Oh yeah 7970's were bottlenecked by the 3960x at low resolutions so this might be a complete waste to you if you aren't playing LARGE!
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