System InformationIntel Core i7-2600K 4.5ghz @ 1.35v
GIGABYTE GA P67A UD5
G.SKILL Ripjaws X Series 16GB DDR3 2133
Sapphire Radeon HD 6870 @ 950mhz
[Crossfire]
Sapphire Radeon HD 6870 @ 950mhz
Sapphire Radeon HD 6870 @ 950mhz
Corsair AX 1200w Professional Series
Noctua NH-D14
Corsair Force 120GB SSD
Antec 1200v2
Windows 7 Ultimate x64
CCC 12.1 CAP 3
AMD APP SDK 2.3(2.1)
GUIMiner 2011-8-24Using Phoenix flags: -k phatk2 VECTORS BFI_INT AGGRESSION=11 worksize=128 FASTLOOP=false
~300 MH/s per GPU
CPU affinity:
Core 1 - GPU 1
Core 3 - GPU 2
Core 5 - GPU 3
So the problem i'm having is the GPU load will just drop and the miner will perpetually read "Connecting..." this is happening 4-5 times a day on any of the 3 GPU's or sometimes more than one, at first i thought it was an Overclock issue, so i set them all back to stock but it persisted, so i pushed to voltage a bit higher (1.180v) @ 950mhz which is more voltage than it really needs, i tested and overclocked them all individually for several hours. So i'm ruling out instability.
I don't have any tools to check the PSU but i have my doubts it's that, i had 2xGTX 580's peaked out for several days on it, and 2x5970's awhile back, this little bit is nothing it can't handle.
Iv'e tried reinstalling the drivers, wiping the OS, pretty much everything time consuming. I'm at a loss, not sure where to go from here, i have a test bench with a 850W Corsair PSU with 3 of the same cards, same Miner/flags (with no crossfire bridge) and it isn't giving me this problem at all.
The only thing i didn't try was taking the crossfire bridge off, because i occasionally use it for gaming, but i don't game to much anymore. What does it sound like to you?