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why am i only getting 45 fps on 6950 2gb in crossfire mode in bf3 with everything on ultra and 4xmsaa and HBAO ambient occlusion?

post #1 of 39
Thread Starter 
i only have on crossfire bridge hooked between the two cards.
post #2 of 39
Unless things have changed since I ran CF, you only need 1 bridge.
I don't think your cards should be limiting performance to 45FPS.
I'm guessing it could be your CPU.
It might be that you're running out of RAM if you've got 4GB but I doubt it.
On another note, you might be pushing it a little running those GPUs and an overclocked CPU on that PSU. I'm guessing you just didn't update your sig rig, right?
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post #3 of 39
is crossfire enabled? You have to enable crossfire in CCC so your cards are actually used in crossfire mode. And sometimes even if you enable it there are times that CCC crashes and unenables it for some reason so you gotta check if it is still enable.
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post #4 of 39
Thread Starter 
only thing i need to tell you is i have 16gb of ram
post #5 of 39
Turn off msaa and run with fxaa instead. Amd cards have big performance problems with msaa in bf3.
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post #6 of 39
Thread Starter 
how do i check if crossfire is enabled?
post #7 of 39
Thread Starter 
i dotn think there is fsaa in bf3
post #8 of 39
Definitely CPU bottleneck.
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post #9 of 39
Quote:
Originally Posted by vltor View Post

only thing i need to tell you is i have 16gb of ram

Well, I did say I doubt it, only other thing I can think of is that your CPU is dragging the cards down like a lead weight. confusedsmiley.png
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CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
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320GB Samsung spintpoint T166 Xigmatek Dark Knight 7 Chieftec 390W :p 
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Some generic chieftec one for now 
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Ex-Kentsfield rig
(20 items)
 
Q6600 RIG :D
(9 items)
 
 
CPUMotherboardGraphicsRAM
4790k MSI Z97M Gaming 780 Ti SLi Corsair Vengeance pro 2x8GB 
Hard DriveHard DriveCoolingOS
Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
MonitorKeyboardPowerCase
3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
AudioOtherOtherOther
Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
Hard DriveCoolingOSPower
320GB Samsung spintpoint T166 Xigmatek Dark Knight 7 Chieftec 390W :p 
Case
Some generic chieftec one for now 
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post #10 of 39
i have the same setup...except running at 4.3ghz and have to enable vsync because of tearing so i know it's not a bottleneck....got him in pm...didn't have xfire drivers loaded wink.gif
the 1100t with x2 6950's will run bf3 with everything on ultra and never miss a beat wink.gif
I'll have him report back on fps...i never bother..as long as it's smooth as silk..i'm happy
Edited by mrinnocent - 2/6/12 at 7:12pm
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easyfps
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  • why am i only getting 45 fps on 6950 2gb in crossfire mode in bf3 with everything on ultra and 4xmsaa and HBAO ambient occlusion?
Overclock.net › Forums › Graphics Cards › AMD/ATI › why am i only getting 45 fps on 6950 2gb in crossfire mode in bf3 with everything on ultra and 4xmsaa and HBAO ambient occlusion?