Topic: 7970 will only mine at 550khash at stock clocks - Lower when OC'ed - HELP - page 3. (Read 4995 times)
April 03, 2013, 09:11:48 PM
GPU usage is right up there at the top. Temps are fine. I am on latest stable drivers, but I did try 12.8 as well. I flashed to the GHZ BIOS, but am back on original. I am now up to 590 khash, and my clocks are 965/1575. At these clocks I would expect much more at -I 20. This card still isn't as fast as the 7950. I really think there is just something about this card.
April 03, 2013, 08:52:44 PM
Which drivers are you using? On Catalyst 13.2 and 13.3 beta, I can pull 550MHash/s+ per card under BFGMiner. Also, make sure your power supply is sufficient and in good working order, and install MSI Afterburner to check temperatures and that the 7970 is being utilised properly. (When mining, GPU usage should be pegged at ~99%. Significantly lower values suggest that the GPU is being underused for some reason, and square waves suggest VRM throttling.)
April 03, 2013, 08:40:10 PM
Well, that is what this card is, a Diamond 7970. I really don't know why this is happening, but it is. Hopefully someone will buy it soon. I'm sure it would still be a killer gaming card.
April 03, 2013, 06:34:41 PM
Just to let you know, my experience with Diamond 7970: Nothing gets me above 520kh/s.... I have tried almost every possible setting. The 7870s I just got are the same way. Both off brands.
April 03, 2013, 06:03:16 PM
Thanks for the link. I was able to get it up to 575 khash, but still not anywhere near what it should be. My 7950 is not finicky at all like this card. Any other ideas? I already put it up for sale a few placed, but maybe I can still get it to cooperate.
April 03, 2013, 12:45:20 PM
see sig thread, read down to 7970 settings poriton
April 03, 2013, 08:57:28 AM
I just added a 7970 to my computer. I have been trying different things, and I just cant get it going good. This is a reference card.
Right now for testing, it is in the main slot, it is the only card installed, I have tried updating to GHZ bios. That did increase stock clocks, but made no difference on the speed. I have to manually set it to 925/1375 to get 550 again. On my 7950 I can get 679khash overclocked, but this 7970 has to stay at 925/1375 to get 550khash and then it will not do any better than that.
I tried cgminer and reaper. Suggestions? What other info can I provide that will help?
Right now for testing, it is in the main slot, it is the only card installed, I have tried updating to GHZ bios. That did increase stock clocks, but made no difference on the speed. I have to manually set it to 925/1375 to get 550 again. On my 7950 I can get 679khash overclocked, but this 7970 has to stay at 925/1375 to get 550khash and then it will not do any better than that.
I tried cgminer and reaper. Suggestions? What other info can I provide that will help?
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