Can't get six or five 7950s working. Was working before. [RESOLVED]
MSI Z77 GD65
MSI 7950 TF3
8GB RAM
Lepa 1600W PSU
Windows 8
Catalyst 13.1
All powered extender cables
I had six cards MSI 7950 TW3 working just fine. After the third day, it kept freezing, resetting or shutting down. Killawatt said I was going a little over 1600 watts. I thought it was consuming too much juice. So I turned down the cgminer tweaks and got it below the wattage of the PSU. This time it kept freezing so I reinstalled drivers. Still had same problems so I reinstalled Windows 8. I just pulled the card that got sick or dead and put it on my office computer. Then I had five cards working. It kept on freezing. Pulled another sick or dead and put it on my office computer. Now I have four working together on the miner and two in the office. Each time I get a sick or dead card, I tune down the cgminer settings. The four GPUs on the miner are now getting 620MH/s or 620kh/s in Litecoin as well as the two in the office without crashing. Thought it might be heat problems but the two in the office got up to 85 without a hiccup.
So two of the cards do not cooperate with the others. I don't know why. The two GPUs in my office computer run cgminer like a champ. I thought it might be the motherboard of the mining rig so I tried different slots and different extender cables and swapped different GPUs around with all the GPUs. The motherboard works fine with other GPUs and cable extenders. Just not the two.
TLDR: two of my GPUs can run cgminer in the office computer perfectly but crashes on the miner rig. The miner rig motherboard and extender cables work fine with four GPUs but not the two that is now in the office.
What do you think?
Thank you.
MSI 7950 TF3
8GB RAM
Lepa 1600W PSU
Windows 8
Catalyst 13.1
All powered extender cables
I had six cards MSI 7950 TW3 working just fine. After the third day, it kept freezing, resetting or shutting down. Killawatt said I was going a little over 1600 watts. I thought it was consuming too much juice. So I turned down the cgminer tweaks and got it below the wattage of the PSU. This time it kept freezing so I reinstalled drivers. Still had same problems so I reinstalled Windows 8. I just pulled the card that got sick or dead and put it on my office computer. Then I had five cards working. It kept on freezing. Pulled another sick or dead and put it on my office computer. Now I have four working together on the miner and two in the office. Each time I get a sick or dead card, I tune down the cgminer settings. The four GPUs on the miner are now getting 620MH/s or 620kh/s in Litecoin as well as the two in the office without crashing. Thought it might be heat problems but the two in the office got up to 85 without a hiccup.
So two of the cards do not cooperate with the others. I don't know why. The two GPUs in my office computer run cgminer like a champ. I thought it might be the motherboard of the mining rig so I tried different slots and different extender cables and swapped different GPUs around with all the GPUs. The motherboard works fine with other GPUs and cable extenders. Just not the two.
TLDR: two of my GPUs can run cgminer in the office computer perfectly but crashes on the miner rig. The miner rig motherboard and extender cables work fine with four GPUs but not the two that is now in the office.
What do you think?
Thank you.