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Title: 7970 faster with 12.3 or 12.8? Post by: chungenhung on September 07, 2012, 10:11:08 PM Got 2 7970 GPUs on a rig, running fine for weeks.
A program I use need to have 12.8 drivers. I am currently using 12.3. Would the 12.8 driver screw anything up? Would it be slower/faster? Should I use the SDK that came with 12.8? Thanks Title: Re: 7970 faster with 12.3 or 12.8? Post by: crazyates on September 07, 2012, 11:48:36 PM I have a 7970 on 12.8, and I get 692Mh/s with 12.8 at 1180MHz with CGMiner and all default settings (-v 1 -w 64). If you do notice any drop with 12.8 (and consequently SDK 2.7), it won't be hardly any at all (less than 1%).
Title: Re: 7970 faster with 12.3 or 12.8? Post by: Aion2n on September 08, 2012, 01:19:32 AM 12.8 is faster.
Title: Re: 7970 faster with 12.3 or 12.8? Post by: betatest512 on September 08, 2012, 05:09:08 PM 12.8 should be faster
Title: Re: 7970 faster with 12.3 or 12.8? Post by: Badonkadonk on September 10, 2012, 09:09:19 PM im currently using multi 7950`s, and only change i noticed was +3-5c. running them at 1100/675...
think i need some risers tho cause the first card in both rigs is running at 88c while the other is at 74c :( Title: Re: 7970 faster with 12.3 or 12.8? Post by: btcnut on September 14, 2012, 12:54:02 AM im currently using multi 7950`s, and only change i noticed was +3-5c. running them at 1100/675... think i need some risers tho cause the first card in both rigs is running at 88c while the other is at 74c :( Try tightening the screws on the heatsink assembly Also check in CGminer (or AB) that your fans are running at the same RPM. One of my cards runs at 2000 rpm @ 39% fan where as all of the others run at 2150-2250. The low RPM card was obviously always hotter than the others, until I bumped up the minimum fan to 42% in cgminer for that card. Tightening the heatinsk assembly was also worth about 2-3 degrees as the screws had loosened a little. Title: Re: 7970 faster with 12.3 or 12.8? Post by: squid on September 14, 2012, 01:10:00 AM How are you guys able to downclock your memory? My memory seems locked at -150 Mhz of whatever core clock speed is =/
Title: Re: 7970 faster with 12.3 or 12.8? Post by: crazyates on September 14, 2012, 01:57:44 AM How are you guys able to downclock your memory? My memory seems locked at -150 Mhz of whatever core clock speed is =/ MSI AB. See this thread here: https://bitcointalk.org/index.php?topic=103636.0 Title: Re: 7970 faster with 12.3 or 12.8? Post by: Badonkadonk on September 14, 2012, 08:41:26 AM im currently using multi 7950`s, and only change i noticed was +3-5c. running them at 1100/675... think i need some risers tho cause the first card in both rigs is running at 88c while the other is at 74c :( Try tightening the screws on the heatsink assembly Also check in CGminer (or AB) that your fans are running at the same RPM. One of my cards runs at 2000 rpm @ 39% fan where as all of the others run at 2150-2250. The low RPM card was obviously always hotter than the others, until I bumped up the minimum fan to 42% in cgminer for that card. Tightening the heatinsk assembly was also worth about 2-3 degrees as the screws had loosened a little. 77% fan speed on the low temp cards and 99% on the others, i think its just cause there closed in so tight, have a wifi card in between, only place i could fitt it :( was thinking about getting watercooling for them but rly dont know much about it or what to buy, noone seems to have a complete pack, atleast not in norway Title: Re: 7970 faster with 12.3 or 12.8? Post by: AndrewBUD on September 14, 2012, 12:28:37 PM Water cooling is a lot of work and can become very expensive... You need a pretty hefty "WC" system to cool multiple GPU's....
I would get some risers and keep the cards further away from each other.... |