Topic: 7970 hot hot hot! - page 2. (Read 6329 times)
0 meaning that it does not make core clock changes? You must have a range set in the config file for this to be true? eg. 5850 @ 725-950
by default powertune is off.... right?
Just the opposite. Powertune is 0 by default. You can't turn it off completely (it's part of the hardware). But you can turn Powertune's TTD tolerance up by a maximum of 20%.
Con says cgminer is best with 7970s using powertune +5. But I have better luck with the max, perhaps because I'm using the newest drivers. I also set my mem:gpu at 1:1 so that might be part of it. YMMV.
by default powertune is off.... right?
PowerTune will slow things down if it thinks the card is getting too hot.
yes it's 75..... those 7970 should stay around 75 no problem.....
cgminer also has a "--target-temp" option that you can adjust, the default is 75 i think.
Not usually... One is probably an overclocked version vs a reference version? Not I doubt they both have the same stock speeds.
Check in cgminer.... g, c, 0 see what the engine speed is and do the same with card 1.
you can change these settings through cgminer and you can try and lower the ram to help keep the heat down.
Check in cgminer.... g, c, 0 see what the engine speed is and do the same with card 1.
you can change these settings through cgminer and you can try and lower the ram to help keep the heat down.
I've started mining with a small rig. I've picked up a couple of used 7970's. I'm running ubuntu 12.04 with cgminer.
I actually, don't know that much about the cards I bought. One is a single fan 7970 that takes up 2 slots. The other is a 2 fan unit that takes up 3 slots. Call 'em card 0 and card 1.
I start cgminer with the auto fan option.
Card 0: 1185 Mhz CPU, 1035Mhz Mem Clock, 85% fan, 74C
Card 1: 1185 Mhz CPU, 1035Mhz Mem Clock, 35% fan, 72C
Both are generating 706Mh/s.
Sweet!, But I think it's a bit hot. So I think - kick up the fan on Card 1 (85%) and maybe that'll dissipate some of the heat from Card 0.
Now: Card 0 is 68C; Card 1 is 59C
But Card 0 is doing 650Mh/s, Card 1 is doing 706 Mh/s.
Could/Does the temperature affect the hash rate?
I actually, don't know that much about the cards I bought. One is a single fan 7970 that takes up 2 slots. The other is a 2 fan unit that takes up 3 slots. Call 'em card 0 and card 1.
I start cgminer with the auto fan option.
Card 0: 1185 Mhz CPU, 1035Mhz Mem Clock, 85% fan, 74C
Card 1: 1185 Mhz CPU, 1035Mhz Mem Clock, 35% fan, 72C
Both are generating 706Mh/s.
Sweet!, But I think it's a bit hot. So I think - kick up the fan on Card 1 (85%) and maybe that'll dissipate some of the heat from Card 0.
Now: Card 0 is 68C; Card 1 is 59C
But Card 0 is doing 650Mh/s, Card 1 is doing 706 Mh/s.
Could/Does the temperature affect the hash rate?
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