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7970 Asic Quality

chipachap said:
Well I presume if there's less leakage that everything else on the board would have more voltage or current running through everything heating up the rest on it's way.

My theory was that the more volts that leak from the board the less runs through other components thereby leaving them cooler.

Could be totally off the ball tbh though.
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Other way around, kinda. The more volts "leaked", the more are required for stability. Thus, the more voltage the hotter it gets.
 
chipachap said:
Well I presume if there's less leakage that everything else on the board would have more voltage or current running through everything heating up the rest on it's way.

My theory was that the more volts that leak from the board the less runs through other components thereby leaving them cooler.

Could be totally off the ball tbh though.
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It doesn't quite work that way. Leakage (wasted energy) is expelled almost entirely as heat. More leakage equals more heat, so less is always better.
 
ASIC of 79.9%

Default voltage of 1112mV, ran 1125 core on that fine. Have upped it and run 1175/1750 @ 1187mV for my 24/7.

Temps max at 66/67c during games/stress tests (MSI Lightning)
 
PaulyD said:
ASIC of 79.9%

Default voltage of 1112mV, ran 1125 core on that fine. Have upped it and run 1175/1750 @ 1187mV for my 24/7.

Temps max at 66/67c during games/stress tests (MSI Lightning)
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I think our cards might have been blood brothers in a previous life. 78.9 Asic here, 1.112, will run 1125 core at stock, am currently testing 1172 currently at 1.137 volts but may need to up that 1 or 2 notches yet to be fully stable. I'm finding that buy running memory lower i need less volts on the core, you should try that. The gains from overclocking the memory past 1600 aren't that great on most games.
 
7970 Lightning ASIC 60.7%

Matt, I hope you are going to put all these figures in a spreadsheet. ;)
 
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And we have the loser....lowest voltage i can get it to run boost clocks at is 1.176. its a sapphire vapor boost edition :(

asic_zps6eec4860.jpg
 
Card doesn't really bother me.
1125MHZ at 1.2V is fine for me, doesn't get too hot or loud for me.

I'll probably RMA it for the screw, but the card only goes upto 1125MHZ, so the less volts that get me there, the better.

And I bet at these clocks speed your percentage gain is going to start tailing off anyway, so it's not worth pushing it even more.
I'll only have it a few months before 8970 anyway.
 
LtMatt said:
He can go to about 1220 core from memory. Considering he got a lightning id say he got a tad unlucky but tbh 1200 core is more than enough.
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Correct sir. That's as far as I have bothered to take it for a bench run. Yes I was a little unlucky but not really bothered as I don't run it at that 247, I 'm running it at 1125 at the minute don't see the point in running it any higher. Main reason for getting this card was for the cooler. :)
 
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