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7970 CF not utilizing more than 30-50% on each card (BF 3 Multiplayer) - Page 3

post #21 of 57
here is what i got in bf3 MP 64-man server when i crossfired my 7970 and 7950 with the i7 at 4.5 GHz

1080 ULtra (all) and 4MSAA



gpus are stock.

try disabling and enabling crossfire mode just prior the game.

edit: btw, one card was 100% (99) and the other went down to the low 90s. they were just so powerful the chip struggled to keep up.
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post #22 of 57
Quote:
Originally Posted by nicko11 View Post

Just took a little test in the game, and yes it seems like my CPU is reaching 100% usage... ***

Expensive upgrade that is gonna be...

Edit: But that still doesn't justify it having lower FPS with CF than with one.

Your cpu should hit like 70% tops, there might be some short of conflict going on.
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post #23 of 57
2 7970s or 680s even 580s and 64 player bf3 is just to much for amd CPU to handle End of story,
post #24 of 57
Try this in cmd: setx GPU_MAX_ALLOC_PERCENT 100

It raises the maximum memory buffer.
post #25 of 57
Quote:
Originally Posted by Harry604 View Post

2 7970s or 680s even 580s and 64 player bf3 is just to much for amd CPU to handle End of story,

Even your 3570K could not do any better. Please read up on facts before just talking non sense. This is how rumors get started. That AMD CPU is fine. As stated multiple times on OCN even people with 3770K's have that issue.

Even those older 580's will not have 99% usage in BF3 multiplayer with your 3570K. Prove me wrong make a video showing they are pegged at 99% usage both of them.
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post #26 of 57
Thread Starter 
Quote:
Originally Posted by GeekMan View Post

Try this in cmd: setx GPU_MAX_ALLOC_PERCENT 100

It raises the maximum memory buffer.

Just tried it, didn't work either.

on Kharg Island it is mostly at only 30% usage on each card.
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post #27 of 57
I had this issue recently and ended up having to reinstall my OS to get BF3 working properly again. You might want to input your rig into rigbuilder so we can see everything in one place.
What OS are you using?
post #28 of 57
Mail me your cards so I can troubleshoot on my system for you. I will be doing this for you, not myself.
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post #29 of 57
Thread Starter 
Quote:
Originally Posted by Nemesis158 View Post

I had this issue recently and ended up having to reinstall my OS to get BF3 working properly again. You might want to input your rig into rigbuilder so we can see everything in one place.
What OS are you using?

Using Windows 7 Ultimate, and i added the rig.
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post #30 of 57
I've had such a problem before back when I was running HD6950 CF together with my 1090T at stock. I was wondering why my frames were horribad even when running Low presets in BF3, like at about 40-80 in maps such as Grand Bazaar and Metro. When I took out one card I was surprised to see my frames at 55-85+. I knew immediately CF drivers were not optimized properly. I decided to sell both 6950s and stick to one 7970.

Thus in your case, it could very well be driver issues. Try reinstalling BF3 or even your OS. I don't see how your frames can be so low even when running one 7970. (Btw, my single 7970 runs BF3 Ultra @ 100fps with my 1090T at 1920x1080 res). Just my 2 cents here.
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