Title: Help/Advice for optimizing 2x Sapphire 7950 3GB Post by: sv4ol84a6v79a46ilby on April 13, 2013, 12:48:56 PM These: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&lid=1&pid=1439&leg=0
I am presently running both with all 7 boxes checked and no flags. No flags because I am using the computer. First one stays at 415.8 Mh/s (occasionally increases ~1Mh/s), second one is the same almost all the time and only varies ~5 Mh/s, probably because that's the one my monitor is connected to. http://s15.postimg.org/agxhdr2ij/Clipboard12.jpg Is this a good rate? Or should it be a lot better? What can I do to optimize it? More details: Software:
Primary Hardware:
Other factors:
Title: Re: Help/Advice for optimizing 2x Sapphire 7950 3GB Post by: Quix on April 13, 2013, 01:25:30 PM I have 2x Sapphire 7950s (likely for the same reason you do, they've been on sale).
I'm getting around 500Mh/s at 950Mhz core (make sure to max the power limit when overclocking). I can get about 580 at 1100mhz but the fans and temperatures spike to alarming levels so I'm going to repaste the heat sinks with IC Diamond and see. cgminer.exe -u youruser -p password -o http://pool.com -k diablo -v 1 -w 256 -I 9 Title: Re: Help/Advice for optimizing 2x Sapphire 7950 3GB Post by: sv4ol84a6v79a46ilby on April 13, 2013, 02:36:50 PM I have 2x Sapphire 7950s (likely for the same reason you do, they've been on sale). I'm getting around 500Mh/s at 950Mhz core (make sure to max the power limit when overclocking). I can get about 580 at 1100mhz but the fans and temperatures spike to alarming levels so I'm going to repaste the heat sinks with IC Diamond and see. cgminer.exe -u youruser -p password -o http://pool.com -k diablo -v 1 -w 256 -I 9 no mine are the higher end models. the new ones are not as powerful. Title: Re: Help/Advice for optimizing 2x Sapphire 7950 3GB Post by: sv4ol84a6v79a46ilby on April 15, 2013, 12:17:14 AM These: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&lid=1&pid=1439&leg=0 I am presently running both with all 7 boxes checked and no flags. No flags because I am using the computer. First one stays at 415.8 Mh/s (occasionally increases ~1Mh/s), second one is the same almost all the time and only varies ~5 Mh/s, probably because that's the one my monitor is connected to. http://s15.postimg.org/agxhdr2ij/Clipboard12.jpg Is this a good rate? Or should it be a lot better? What can I do to optimize it? More details: Software:
Primary Hardware:
Other factors:
When I increased the GPU clock to 1050, it increased to over 500Mhash/s Combined total is remaining stable between 1.005 and 1.015 Ghash/s Keeping the window open in my closet where my PC is, and fans on 100%, GPU temp for both so far are stable at 69°C. Room temp is probably around ~60°F/15°C. Notes:
Title: Re: Help/Advice for optimizing 2x Sapphire 7950 3GB Post by: bitcoiner49er on April 26, 2013, 02:21:10 PM You don't mention what you are using for CCC and SDK.
I am running BFGminer, Intensity 9. (No other flags) on Win 7 CCC 12.8 SDK 2.7 1100 Mhz clock 300 Mhz Memory (lowers temp) 1.050 Voltage 65% fans (open case) Temp: 71-74 C I'm getting 575 Mh/s per Sapphire HD 7950 3GB, steady. I don't use mine for much, just checking bitcoin related webpages. I'm drawing about 630-640 Watts at the wall. |