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Title: Compiled Undervolting Results Post by: jamesg on February 24, 2012, 04:38:09 AM Hello fellow bitcoiners,
I would like to compile a complete list of undervolting results the community has been able to figure out. I am particularly interested in 5970s, 5870s, 5850s, 5830s and 6950s. It would be great if they were posted in the format below. I'll go first with the results of my 5970 undervolting. Miner: cgminer OC software: cgminer Card: 5970 Core: 680 Memory: 166 Voltage: 0.95 Mh/s: 630 Wattage: ???? Hopefully we can compile a complete list here so that others can easily find and utilize this information. Thanks, gigavps Title: Re: Compiled Undervolting Results Post by: cmg5461 on February 24, 2012, 05:39:35 AM Miner: pheonix
OC software: bamt Card: 5970 Core: 775 Memory: 300 Voltage: 1.02 Mh/s: 704 Miner: pheonix OC software: bamt Card: 5850 Core: 775 Memory: 300 Voltage: 1.02 Mh/s: 341 Title: Re: Compiled Undervolting Results Post by: diabinc141 on February 25, 2012, 07:51:05 AM Miner: guiminer
OC software: msi afterburner Card: 5870 Core: 800 Memory: 300 Voltage: 1.05 Mh/s: 356 Title: Re: Compiled Undervolting Results Post by: spiccioli on February 25, 2012, 08:51:48 AM Hi gigavps,
Miner: cgminer 2.3.1-2 OC software: cgminer Card: 2x 5870 Core: 700 Memory: 150 Voltage: 0.95 Mh/s: 610 (sum of both cards) Wattage: 230-245 at the plug, including 85W for system at idle, so around 77w per card. spiccioli Title: Re: Compiled Undervolting Results Post by: malevolent on February 25, 2012, 12:43:57 PM ATM I ran all my 5830s, 5850s and 5870s @ stock voltage but I have to undervolt one card, a HD 6770 because it's placed in a very uncomfortable place with almost no air to inhaust
Miner: guiminer (phoenix with modified phatk for 2.6 sdk) OC software: barelyclocked Card: HD 6770 Core: 775 (stock) Memory: 180 (stock was 1000) Voltage: 0.8V (stock was 1.125V) MH/s: 170 Wattage: ??? Title: Re: Compiled Undervolting Results Post by: TheHarbinger on February 25, 2012, 03:45:15 PM Miner : BAMT 0.4/cgminer
OC software : cgminer Card : 5 x 5870 Core : 950 Memory : 150 Voltage : 1.100 MH/s : 2200 Full system wattage : 940W (from kill-a-watt) Title: Re: Compiled Undervolting Results Post by: S. Omega on February 25, 2012, 04:34:59 PM Per card:
Miner: CGMiner OC software: MSI Afterburner 2.2.0 Beta 10 Card: 6950 (shaders unlocked) Core: 840 Memory: 720 Voltage: 1.00 Mh/s: 380 Miner: CGMiner OC software: MSI Afterburner 2.2.0 Beta 10 Card: 5870 Core: 900 Memory: 600 Voltage: 1.087 Mh/s: 405 Miner: CGMiner OC software: MSI Afterburner 2.2.0 Beta 10 Card: 6990 Core: 840 Memory: 720 Voltage: 1.00 Mh/s: 760 Title: Re: Compiled Undervolting Results Post by: MrTeal on February 26, 2012, 04:09:39 AM Miner: Phoenix
OC software: MSI Afterburner 2.2.0 Card: 6870 Core: 1000 Memory: 900 Voltage: 1.168 Mh/s: 320 Title: Re: Compiled Undervolting Results Post by: BCMan on February 26, 2012, 05:55:06 AM Miner: Phoenix
OC software: ATI Tray Tools Card: 6870 Core: 1000 Memory: 300 Voltage: 1.051 Mh/s: 323.5 Miner: Phoenix OC software: CGMiner Card: 5770 Core: 960 Memory: 244 Voltage: 1.001 Mh/s: 222 Title: Re: Compiled Undervolting Results Post by: MrTeal on February 26, 2012, 05:50:06 PM Miner: Phoenix OC software: ATI Tray Tools Card: 6870 Core: 1000 Memory: 300 Voltage: 1.051 Mh/s: 323.5 Are you running that 6870 on a headless miner, BCMan? I've tried everything from Afterburner to Clocktweak to get my memory down to 300MHz, but my driver crashes if I try to go lower than 900MHz. Title: Re: Compiled Undervolting Results Post by: BCMan on February 26, 2012, 06:47:39 PM Miner: Phoenix OC software: ATI Tray Tools Card: 6870 Core: 1000 Memory: 300 Voltage: 1.051 Mh/s: 323.5 Are you running that 6870 on a headless miner, BCMan? I've tried everything from Afterburner to Clocktweak to get my memory down to 300MHz, but my driver crashes if I try to go lower than 900MHz. https://i.imgur.com/S2Ld3.gif Title: Re: Compiled Undervolting Results Post by: sunbreak on March 09, 2012, 01:21:05 AM Miner: cgminer
OC software: bios flash Card: 6950 Core: 600,600,600,600 Memory: 150 Voltage: 0.900 Mh/s: 1032 Watts: 368 watts (kill-a-watt) W/Mhash: 0.3565 Miner: cgminer OC software: bios flash Card: 6950 Core: 820,820,850,830 Memory: 150 Voltage: 1.00 Mh/s: 1457 Watts: 553 watts (kill-a-watt) W/Mhash: 0.3795 Miner: cgminer OC software: bios flash Card: 6950 Core: 860,860,860,860 Memory: 150 Voltage: 1.05 Mh/s: 1471 Watts: 626 watts (kill-a-watt) W/Mhash: 0.4255 Miner: cgminer OC software: bios flash Card: 6990 Core: 920,920,920,900 Memory: 150 Voltage: 1.12 Mh/s: 1640.7 Watts: 767 watts (kill-a-watt) W/Mhash: 0.4676 Miner: cgminer OC software: bios flash Card: 39x6950, 41x6950 unlocked (4 gpu's per machine, 20 machines) Core: 790-900 (varies) Memory: 150 Voltage: 1.00 Mh/s: 28528 Watts: 10767 watts @ 279 volts (fluke t5-1000) during the day at 62F W/Mhash: 0.3774 Watts: 10280 watts @ 279 volts (fluke t5-1000) during the night at 38F (not from fans, but from lower resistance) W/Mhash: 0.3603 Title: Re: Compiled Undervolting Results Post by: DeathAndTaxes on March 09, 2012, 02:41:04 AM 279 volts? What country uses 279 volt mains?
Title: Re: Compiled Undervolting Results Post by: rjk on March 09, 2012, 04:16:36 AM 279 volts? What country uses 279 volt mains? Odd, might be a single leg of 480 phase-to-ground (277 +2 variance), but I don't know of any PSUs rated that high.Title: Re: Compiled Undervolting Results Post by: malevolent on March 09, 2012, 06:54:27 AM 279 volts? What country uses 279 volt mains? Odd, might be a single leg of 480 phase-to-ground (277 +2 variance), but I don't know of any PSUs rated that high.I think he's using as separate transformer..but let's wait for his resposnse ;) Title: Re: Compiled Undervolting Results Post by: 420 on July 25, 2012, 01:35:18 AM I copied the first, 680 core, .95v 166 memory
but i have 3 cards back to back, they're getting over 85C easy (on air) anyone know how much underclock I can get to keep the temperatures down? EDIT: oops, I was wrong and they were all still stock, i put separators to hold the cards apart and they are able to cool better when I remove the '#' in front of the designations to change clock or voltage i get an error and the mining won't run... :( Title: Re: Compiled Undervolting Results Post by: MXRider on July 25, 2012, 05:27:30 PM I copied the first, 680 core, .95v 166 memory but i have 3 cards back to back, they're getting over 85C easy (on air) anyone know how much underclock I can get to keep the temperatures down? EDIT: oops, I was wrong and they were all still stock, i put separators to hold the cards apart and they are able to cool better when I remove the '#' in front of the designations to change clock or voltage i get an error and the mining won't run... :( Use Afterburner and PCIE-risers. Those two will solve all your problems. Title: Re: Compiled Undervolting Results Post by: 420 on August 01, 2012, 05:38:23 AM I copied the first, 680 core, .95v 166 memory but i have 3 cards back to back, they're getting over 85C easy (on air) anyone know how much underclock I can get to keep the temperatures down? EDIT: oops, I was wrong and they were all still stock, i put separators to hold the cards apart and they are able to cool better when I remove the '#' in front of the designations to change clock or voltage i get an error and the mining won't run... :( Use Afterburner and PCIE-risers. Those two will solve all your problems. Currently using BAMT. i tried to mine under xp x64 and no program would utilize all my cores currently underclocked, had problems not sure if cards, board, PSU or software... Title: Re: Compiled Undervolting Results Post by: 420 on August 04, 2012, 06:05:55 AM Miner: cgminer OC software: cgminer Card: 5970 Core: 805 Memory: 300 Voltage: 1.012 Mh/s: 747 Wattage: 185 Miner: cgminer OC software: cgminer Card: 5970 Core: 850 Memory: 300 Voltage: 1.050 Mh/s: 790 Wattage: 225 what settings to get those hashrates? I'm at 795mhz on 3 5970's and getting 717.6.mhash average 256 worksize, -v2 intensity 9, CGMINER 2.1.3 or 2.6 |
