i got sapphire reference 6950 2gb and msi R6950 twin frozzer 2 gb i wanna crossfire them. but i install the cards, and crossfire bridge and latest driver but still there is no enable crossfire button on the ati ccc.
i even format the system.on ati ccc at hardware menu it shows one of the card and shows the other disabled graphic card
Motherboard: gigabyte 990fxa-ud5
CPU : amd phenom II x4 955 3.2 ghz 8mb cache there is no overclock
RAM : corsair ddr3 2 gb x 4 1600 mhz ram
Video Card : sapphire (reference)HD 6950 2gb + msi R6950 twin frozzer 2 gb
PSU : XILENCE XP1000 1000W 135MM FAN ACTIVE PFS 80+ BRONZE
Monitor : Asus MS238
Hard drives: Seagate baracuda 32mb 1tb
Optical Drives: LG dvd rw
Additional PCI cards: creative sb0570 audigy value
Number of fans present: 9
Operating System : windows 7 ultimate 64 bit
Video Card Drivers in Use ( and tried ):ati ccc 12.1 , ati ccc 11.12 , ati ccc 11.7
Motherboard Drivers Used:
All major components check 100% after thorough testing ( eg. Memory & Memtest86 ): system stress test with everst: no problem
System clean of viruses / spyware etc: none
Other things tried: formated system, individually tested grafic cards, motherboard bios updated, used 3 cf bridges with several combinations
everything set as you said gpuz and device manager show them up i tested both card invidualy and i tested the card on another motherboard( asus m4a89gtd pro usb 3) i have same result at that tester motherboard.
ati ccc hardware tab says one of the card is diabled adaptor which is not connected to the monitor. when i connect to the monitor ( disabled one ) ati ccc hardware tab swicth the cards and shows one of them disabled which is not connected to monitor
Maybe your crossfire bridge is garbage. Also, are you using a single bridge or two? You only need one bridge. If you are using one, have you tried using it on both of the bridge connections independently?