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Okay so I thought I had low ASIC one my 7950

post #1 of 19
Thread Starter 
Okay so I had a 7950 with ASIC 55.9%.

Yep, very low reading. Well, gets better, just received my MSI 7970, downloaded GPU-z, read ASIC... 55.5%

laugher.gif

Stock voltage is 1174mv might be the same for every MSI 7970 reference though...

I haven't tried to overclock yet, I will let yall know tongue.gif
Me and my luck redface.gif
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post #2 of 19
I got MSI 7950 with 90,8% ASIC. Stock voltage is 993mV. Tested 1100/1500 with 1040mV, GPU temp was like 70-72. Reverted to stock settings because 7950 is still more than enough atm.
Edited by Sasasd - 11/28/12 at 3:05pm
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post #3 of 19
That's not necessarily all bad; with the proper cooling cards with lower ASIC numbers have tended to be better clockers. They do get warm with voltage, though.
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post #4 of 19
Thread Starter 
You are not the first to say that althought from what I've seen, low ASIC = poor quality chips. I've seen on the datasheet from the 7970 official forum clocks of 1150 / 1180 for the stock voltage I am using (1174mv).

I can only do 1130MHz on unigine at stock voltage... At 20% fan the GPU hits 70C, so I decided to change the thermal paste and heh boy, that was messy down there. The paste was dry and there was way too much. Like a good 2mm of hard dry paste I had to remove.
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post #5 of 19
Did reapplying the paste help at all?
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post #6 of 19
Thread Starter 
I think I got the worst 7970 ever... It is like increasing voltage does nothing. I can run unigine at 1190 with 1.25v past that I can see artifacts.
1.25v is the eventual voltage I would use 24/7
I decided to see how far I could go with 1.3v, well I can't get past 1210 and even at that speed I see artifacts. Score didn't go up by a lot too. I don't know if I hit the OCP "wall" but for sure this card clocks like crap.

Reapplying paste saved a good 5C if not 10C. Max temperature I have (that was with 1.3v & 1220 max speed) is 67C with 50% fan which is the max I can tolerate. Max VRM temp are 54/47, everything look good beside the fact the card cannot go higher than 1210MHz. Even my 55.9% ASIC 7950 could run unigine at 1260 on core!
The memory looks normal, I can get up to 1700MHz.
Edited by Just a nickname - 11/28/12 at 4:48pm
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post #7 of 19
OP thats the silicon lottery. bad luck. if your HD 7970 can do 1125 mhz at stock voltage i would recommend you stick to that. seeing that you are not able to hit 1200 mhz even with 1.25v its not worth the extra power and heat for just a 60 - 70 mhz increase.
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post #8 of 19
Thread Starter 
I know I know, the 7970 overclocked is nearly 3 times faster than my 5870 overclocked and for 300$ I shouldn't have anything to complain about. It is just that... I wanted a fun session of overclocking tongue.gif
Very dissapointed that in roughly a hour I already hit the megahurtz wall despite voltage increase mad.gif

I will try the GHz BIOS, who knows rolleyes.gif
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post #9 of 19
Interesting, mine is reporting 79.7%.

We'll see how she does...

EDIT:
After a very quick, and I mean very quick, overclocking session using CCC, I was not able to get my GPU core up to 1250Mhz on stock voltage, but I was stable at 1200Mhz. I was only doing increments of 50Mhz (I said very quick), and the card eventually recovered, so I think saying it could do maybe 1225Mhz on stock voltage isn't too far fetched. I didn't try memory yet.

Is that about on par with other 7870's, or under par?
Edited by SectorNine50 - 11/28/12 at 8:21pm
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post #10 of 19
I have a HD7970 with 54.3%

Edited by Dirtyworks - 11/28/12 at 9:00pm
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