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6870's wont crossfire

post #1 of 8
Thread Starter 
i just got my 2nd 6870 back from rma and i want to crossfire it with my new motherboard, but i cant get it to enable.

when i set it up i got the crossfire screen in windows but no cards are listed. also my 2nd card is running at 8x well my first is 16x
Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
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Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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post #2 of 8
Is there a bridge on the cards?
post #3 of 8
Thread Starter 
yes, does it matter which way its facing?
Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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post #4 of 8
Thread Starter 
just did a full uninstall and reinstall of the drivers, seems to be detecting now

sorry to waste your time
Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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Deep Green
(13 items)
 
  
CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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post #5 of 8
No problems, good to know it's fixed.

Post back with some performance infomation if you can
post #6 of 8
Thread Starter 
will do
i cant get my mobo stable at a decent speed now that i updated the bios
Deep Green
(13 items)
 
  
CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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Deep Green
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CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
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post #7 of 8
Quote:
Originally Posted by otakunorth View Post
will do
i cant get my mobo stable at a decent speed now that i updated the bios
You should be able to revert to previous BIOS versions.
    
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CPUMotherboardGraphicsRAM
Intel i5 3570K [Delid] Asrock Z77E-ITX EVGA GeForce GTX 1080Ti FTW3 HyperX Fury 16GB 1866 DDR3 HX318C10FBK2/16 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 256GB Silicon Power S60 120GB Western Digital Blue Scorpio 1TB Seagate Constellation 2 1TB 
CoolingCoolingCoolingCooling
Swiftech Apogee Drive II XSPC RX240+EX240 [Painted White] 5x 2150RPM Gentle Typhoons PWM [Painted Black+W... Bitspower Water Tank Z-Multi 80 Inline Reservoir  
OSMonitorMonitorMonitor
Windows 10 LG 34UC88-B 34" Ultrawide 3440x1440 75Hz HP ZR2240w IPS Qnix QX2710 1440p 110Hz 
KeyboardPowerCaseMouse
WASD CODE 87-Key [MX Clear + PBT Keycaps] Seasonix X-750 Case Labs Mercury S3 Logitech G502 
AudioAudio
Sennheiser HD 598 SE Micca OriGen 
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post #8 of 8
Thread Starter 


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just got my rig stable
this score look about right? im happy with the performance increase but xfire is causing some odd issues in some games

edit: my 1055t was running just under 4ghz and the 6870's are flashed with the xfx black edition bios
Deep Green
(13 items)
 
  
CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
  hide details  
Reply
Deep Green
(13 items)
 
  
CPUMotherboardGraphicsRAM
X6 @ 4GHz 990FXA-UD5 6870 Crossfire 2x4GB Corsair Vengeance 1866MHz 
Hard DriveMonitorPowerCase
Agility 2 and 3 3x 22" Eyefinity GX 750w CoolerMaster Sniper (AMD Custom) 
  hide details  
Reply
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