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Title: 7970 undervolt by what amount to start with Post by: pgbit on June 01, 2013, 10:14:42 AM Just wondering, whats a sensible figure to undervolt by initially? I have read that you can undervolt more over time. Just wondering what a sensible and safe figure to aim at with a new setup. I have a Powercolor Radeon 7970 card, also a Gigabyte one. If anyone has stable settings, please post them with clock speed, mem clock, MH/s. Thanks!
Title: Re: 7970 undervolt by what amount to start with Post by: eraserhead on June 01, 2013, 04:26:16 PM 2 x Sapphire Radeon
1100/350/1175 620 Mh/s 1150/350/1100 640 Mh/s Temps around 75C Title: Re: 7970 undervolt by what amount to start with Post by: pgbit on June 01, 2013, 05:32:43 PM thats really helpful, thanks, is that at around 1.17 volts or a bit lower?
Title: Re: 7970 undervolt by what amount to start with Post by: fflewddur on June 01, 2013, 05:42:41 PM I run mine at 1030 mV (according to Trixx... GPU-Z says they're actually running around 0.95 V), 975 core, and 825 mem. That keeps the temps around 77 C in a non-air-conditioned room, and gives about 580 Mh/s per card.
Eraserhead, how are you running the memory at 350? All of the AMD drivers I've tried force me to keep it 150 Mhz less than the core clock--any less and GPU-Z says the memory goes back to running at stock speeds. Title: Re: 7970 undervolt by what amount to start with Post by: angelkarajov on June 26, 2013, 01:55:45 PM 2 x Sapphire Radeon 1100/350/1175 620 Mh/s 1150/350/1100 640 Mh/s Temps around 75C Version of TRIXX? Thanks Title: Re: 7970 undervolt by what amount to start with Post by: zackclark70 on June 26, 2013, 01:58:53 PM set it so its arount 1v underload same on 7950s and 7970s
Title: Re: 7970 undervolt by what amount to start with Post by: coolamasta on June 26, 2013, 02:18:48 PM I'm running my 7950's at 1100mhz core, will check voltage later and let you know.
What im not sure about is if a memory speed increase would help with the mining or not, does anyone know? Title: Re: 7970 undervolt by what amount to start with Post by: angelkarajov on June 27, 2013, 06:05:22 AM I can't change voltage with TRIXX(4.6.0 or 4.3.0). My card is Sapphire 7970.
Title: Re: 7970 undervolt by what amount to start with Post by: TheBitcoinMiningOutlet on June 27, 2013, 07:14:31 AM 705 Mh/s-Stable- with-7970 over-clocked to GPU to 1150mhz- Memory 1250mhz. Stock Voltage-
IMO dont bother messing with the volts, to much risk of frying a card and 7970s arent cheap, i would know since i have 9x 7970 lol Title: Re: 7970 undervolt by what amount to start with Post by: zackclark70 on June 27, 2013, 10:48:04 AM undervolting should not mess up the card over volting will
Title: Re: 7970 undervolt by what amount to start with Post by: coolamasta on June 28, 2013, 10:49:50 AM Does memory speeds effect your output does anyone know or just best to leave them stock?
Title: Re: 7970 undervolt by what amount to start with Post by: zackclark70 on June 28, 2013, 12:43:24 PM I have found that in depends on the program you are using I use reaper and uping the memory clock by 200mhz makes no different
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