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So Confused! new power supply and Crossfire - Page 4

post #31 of 35
Is it using both gpu's in a game or a benchmark now?
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MINE
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post #32 of 35
Thread Starter 
I typed too soon. 12.10 keeps crashing.. Says mm driver app stocked working.
post #33 of 35
Are you on W7 or W8? If you're on W7 try the uninstall utility and reinstall 12.10.
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DeskoSaurus X
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CoolingCoolingCoolingOS
EK XE 480 + EK CoolStream PE 480 10x Phanteks + 2x Cougar Vortex MCP50X + MCP50X Windows 10 Pro 
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ViewSonic VX2250 22" LED Generic HP Corsair AX860i Lian-Li DK-Q2X 
MouseMouse PadAudioOther
Logitech G700 XTRAC Ripper TC Electronic Impact Twin Corsair Commander Mini 
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Schiit Vali Kanto Yumi (Bamboo) 
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FX-8350 4.95GHz 24/7 GA-990FXA-UD3 Sapphire 7870 XT  Mushkin Redline 997051 @1866 8-8-8-24 1T 
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Crucial Ballistix Tactical Tracer @1866 8-8-8-2... Black WD6401AALS 2x WD10EZEX Raid-0 EK Supremacy 
CoolingCoolingCoolingCooling
10x Cougar Vortex PWM 3x Helix EK VGA Supremacy Acetal Alphacool NexXxos ST30 240mm, 2x XT45 240mm XSPC X2O 750 
CoolingOSMonitorKeyboard
Jingway DP-600 pump Windows 8.1 Pro x64 ViewSonic VX2250 22" LED Generic HP 
PowerCaseMouseAudio
Rosewill HIVE-650 CM 690 II Advanced B&W  Logitech G700 Xonar DG 
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post #34 of 35
Have you tested the new 7770 by itself under load to make sure the card is working OK?

Check BIOS versions of the two boards in GPU-Z and make sure you don't have one that's really far out. Also, check BIOS for motherboard to make sure you're up to date there.

If you can test each board separately, and they work - in each of the two PCIe x16 slots (one at a time), you can probably rule out motherboard and GPU issues. Then it comes down to swapping that brand new power supply and seeing if you're running out of power. You should be OK, the TDP of those 7770 boards (non-overclocked) is about 100W each, figure 90W for CPU (non-overclocked) you should be well within the 550W PS output, but that wouldn't rule out a faulty PS. It's a new and untested component at this point.

Does your old 460W PS have two PCIe connectors? You could try that and see if it works. Two 7770 is still under the limit on your old PS although it's cutting it a little close.

Greg
post #35 of 35
Thread Starter 
what a nightmare. it seemed to be stable ..i can get into CCC now and go into crossfire to make sure its enabled but now steam keeps giving me a error.
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