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Crossfire Low GPU Usage consensus

post #1 of 5
Thread Starter 
So, being that multi-GPU systems have been out for a long time, what is the consensus solution for GPU's that run at a low usage? Drivers? Component Bottlenecking?

I've got 2x 5770's with a PII 720 Triple core running @ 3.21 ghz that has the last core unlocked. 13.12 Drivers just updated. The GPU's (Playing War Thunder) don't get above 50% usage unless at a load screen, which obviously doesn't matter. When they do, the frames shoot up to ~80. In game they're around 45% and I get ~ 30 fps. CFX off I get ~ 50 fps. Is the CPU too weak? Ram not enough (8 gigs)? I've had this problem with multiple games. I think I've had one game (crysis) that has benefitted from two GPU's and actually pushed them to near 100%.
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Phenom II 720 BE @ 3.2 Unlocked Gigabyte MA790GPT- UD3H Sapphire R9 290 Tri-X 8 GB Gskill 
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WD Blue 1 TB Windows 7 Acer 23 in. H233H Corsair TX750 
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Phenom II 720 BE @ 3.2 Unlocked Gigabyte MA790GPT- UD3H Sapphire R9 290 Tri-X 8 GB Gskill 
Hard DriveOSMonitorPower
WD Blue 1 TB Windows 7 Acer 23 in. H233H Corsair TX750 
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HAF-XB 
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post #2 of 5
hmmmm cpu maybe not sure what your ram speeds so id go with cpu with what i know
post #3 of 5
100% your CPU
    
CPUMotherboardGraphicsRAM
Intel 4770k Haswell 3.9GHz @ 1.066v GIGABYTE GA-Z87X-OC MSI GeForce GTX 1080 Ti GAMING X 11G Samsung 16GB MV-3V4G3D/US 1600 7-8-8-24-1T 1.55... 
Hard DriveHard DriveOSMonitor
Samsung 850 Evo 500GB SSD 1TB Samsung F3 Windows 7 Ultimate 64-bit BenQ XL2411Z 24' 144hz, 1080p 
MonitorKeyboardPowerCase
Asus MS238H 23inch 2ms 1920x1080 Logitech G15 Enermax EMR1500EWT Fractal Design Define S with window 
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Logitech G5 Razer Goliathus onboard motherboard 
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CPUMotherboardGraphicsRAM
Intel 4770k Haswell 3.9GHz @ 1.066v GIGABYTE GA-Z87X-OC MSI GeForce GTX 1080 Ti GAMING X 11G Samsung 16GB MV-3V4G3D/US 1600 7-8-8-24-1T 1.55... 
Hard DriveHard DriveOSMonitor
Samsung 850 Evo 500GB SSD 1TB Samsung F3 Windows 7 Ultimate 64-bit BenQ XL2411Z 24' 144hz, 1080p 
MonitorKeyboardPowerCase
Asus MS238H 23inch 2ms 1920x1080 Logitech G15 Enermax EMR1500EWT Fractal Design Define S with window 
MouseMouse PadAudio
Logitech G5 Razer Goliathus onboard motherboard 
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post #4 of 5
5770 xfire = around 5870 isnt it?

maybe increase your Northbridge speed?
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
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Corsair M40 
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CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 1100c/1500m 16GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveHard Drive
c300 128GB SSD 2TB FireCuda 7mm 2TB Firecuda 7mm 1TB 5400rpm 
Hard DriveOSMonitorPower
750GB 5400rpm Windows 10 x64  1920x1080 @90hz 150w 
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Corsair M40 
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post #5 of 5
Thread Starter 
Hmm, that same game is going through testing phases with different forces (Air/ground/sea). On testing the ground forces I got high GPU usage on both cards (90%+) but not with air. I'll have to chalk this up to developer software issues. Seems my computer is perfectly capable of utilizing both cards.
Black Box
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CPUMotherboardGraphicsRAM
Phenom II 720 BE @ 3.2 Unlocked Gigabyte MA790GPT- UD3H Sapphire R9 290 Tri-X 8 GB Gskill 
Hard DriveOSMonitorPower
WD Blue 1 TB Windows 7 Acer 23 in. H233H Corsair TX750 
Case
HAF-XB 
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Black Box
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 720 BE @ 3.2 Unlocked Gigabyte MA790GPT- UD3H Sapphire R9 290 Tri-X 8 GB Gskill 
Hard DriveOSMonitorPower
WD Blue 1 TB Windows 7 Acer 23 in. H233H Corsair TX750 
Case
HAF-XB 
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