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Can my processor handle two HD 6950's Unlocked?

post #1 of 13
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Title says it all. Using my sig rig below, with my CPU OC'd to 4.0Ghz, will I be bottlenecked running two 6950's unlocked and overclocked in Crossfire-X? SS of me playing BF3 below on my one 6950 unlocked:

231

I'm assuming since only 3 cores are showing a lot of usage that only 50% of the CPU is being used, therefore another 6950 would be ok, or does BF3 only use 4 cores and am I using almost 75% of my CPU?
    
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post #2 of 13
I'd say yes, since my 1100T could easily handle 2 GTX 550 Ti's smile.gif
 
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post #3 of 13
Quote:
Originally Posted by OC-Guru View Post

I'd say yes, since my 1100T could easily handle 2 GTX 550 Ti's smile.gif

Except 2 550tis isnt even equal to one 6950...
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post #4 of 13
You frame rates might not improve as much as you hope, especially in more CPU limited scenarios, but you can always turn up details and throw more AA at stuff without losing performance.
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post #5 of 13
Quote:
Originally Posted by y2kcamaross View Post

Except 2 550tis isnt even equal to one 6950...

Just my 2 cents.. I'd say it could cope with it.
 
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post #6 of 13
He's at 80-90% CPU usage on his utilized cores with a single 6950, adding a second will likely only increase frame rate at his current settings by ~15%.
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post #7 of 13
I'd think it would handle it..that's for sure..can you OC higher?
 
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post #8 of 13
Quote:
Originally Posted by Blameless View Post

He's at 80-90% CPU usage on his utilized cores with a single 6950, adding a second will likely only increase frame rate at his current settings by ~15%.

Windows 7 supports core balancing so it should be okay
 
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post #9 of 13
Quote:
Originally Posted by OC-Guru View Post

Windows 7 supports core balancing so it should be okay

No OS can split one thread amongst more than one core.

Most games hammer 1-4 threads and do next to nothing with any remaining ones. If these individual threads can't execute fast enough you run into a CPU bottleneck, no matter how many free cores you have.

My primary system is CPU limited in certain games while task manager reports ~10% CPU utilization because most of the work is done on one thread and one core, leaving five cores (and 11 logical CPUs) mostly idle.
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1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
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Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
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ASUS Xonar DS 
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i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
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Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
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Seasonic SS-860XP2 Corsair Carbide Air 540 
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post #10 of 13
There is threads with people that have only 1 6870 on a 1090t and still getting bottlenecked so yes. You will definatley see one but only in certain games.
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