bspurloc
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June 11, 2013, 03:09:33 AM |
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I run 7870xt at 1100mhz (1.113v) and 750 mem for bitcoins ~505mh/s Happy medium undervolted and overclocked! Scrypt runs poorly on these units 850mhz .981v stock mem ~410kh/s@ 20 I 16834 thread.
how are you getting 505mh/s out of it only clocked to 1100? all the ones I have Sapphires dont hit 500 till 1150mh/s No idea, but I suspect yours are throttling. VRM temps get WAY too high at stock voltages and 1175 is the max I can run my cards at any voltage before they throttle down. Watch MSI afterburner and the gpu goes form 60-99% back and forth when the vrm's get too hot (even with a good gpu temp of 70c). Try setting powertune to 20% etc etc. and 375w is barely enough for that gpu. These babies have been known to suck nearly 300w each when overclocked at stock voltage, think 7950 territory. That plus cpu, ram mobo and I bet your psu is about to catch fire. PM me if there is any other way I can help, that way we keep this thread cleaner. I am running 2 of them at 1200Mhz GPU they are not throttling down they only throttle down when they get over 83C which these dont they stay below 76C, these 2 do 525mh/s steady and read 500+ consistently on slush stats, if they were throttling down they would be less than 450. They work perfectly fine at 375watts they have been balls out for 2 months now. the other one Used to run at 1185Mhz 510mh/s but after I had to reinstall the OS the driver is crashing randomly above 1145 doing 490mh/s with a 375watt supply. I chose these cards because the wiki page shows these cards drawing a max wattage of 175watts which meant they would work fine with a 375 watt supply. If you tach out the PSU it will shut down. I have played with these setups extensively. anyhow I am just looking of any tricks on how to get the 3rd card back to the 1185, before I reinstalled the OS. It runs at the same Temperature as before no change but the OS happened
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jamesc760
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June 11, 2013, 04:09:37 AM |
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In an ideal world, your 375 Watt PSU would produce enough power to run your 7870. Alas, we don't live in such world, do we? You'd do well to replace your 375 Watt PSU with a beefier PSU. I would get a 600 Watt, MINIMUM. This is my 2 cents. Take it or leave it. I don't care. It's your rig. I run 7870xt at 1100mhz (1.113v) and 750 mem for bitcoins ~505mh/s Happy medium undervolted and overclocked! Scrypt runs poorly on these units 850mhz .981v stock mem ~410kh/s@ 20 I 16834 thread.
how are you getting 505mh/s out of it only clocked to 1100? all the ones I have Sapphires dont hit 500 till 1150mh/s No idea, but I suspect yours are throttling. VRM temps get WAY too high at stock voltages and 1175 is the max I can run my cards at any voltage before they throttle down. Watch MSI afterburner and the gpu goes form 60-99% back and forth when the vrm's get too hot (even with a good gpu temp of 70c). Try setting powertune to 20% etc etc. and 375w is barely enough for that gpu. These babies have been known to suck nearly 300w each when overclocked at stock voltage, think 7950 territory. That plus cpu, ram mobo and I bet your psu is about to catch fire. PM me if there is any other way I can help, that way we keep this thread cleaner. I am running 2 of them at 1200Mhz GPU they are not throttling down they only throttle down when they get over 83C which these dont they stay below 76C, these 2 do 525mh/s steady and read 500+ consistently on slush stats, if they were throttling down they would be less than 450. They work perfectly fine at 375watts they have been balls out for 2 months now. the other one Used to run at 1185Mhz 510mh/s but after I had to reinstall the OS the driver is crashing randomly above 1145 doing 490mh/s with a 375watt supply. I chose these cards because the wiki page shows these cards drawing a max wattage of 175watts which meant they would work fine with a 375 watt supply. If you tach out the PSU it will shut down. I have played with these setups extensively. anyhow I am just looking of any tricks on how to get the 3rd card back to the 1185, before I reinstalled the OS. It runs at the same Temperature as before no change but the OS happened
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ZipTheRip
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Activity: 75
Merit: 10
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June 11, 2013, 04:26:37 AM |
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Heavy Duty Dual Spartan6 Bitcoin Mining Device This device is not in stock due to low availability of the required parts to manufacture it.
im so sad now.. tyvm for link thou and BTW love slush pool sure i suffer from the occasonal low pay block but i also enjoy the +40% block every now and again so i have much love!!
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ZipTheRip
Member
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Activity: 75
Merit: 10
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June 11, 2013, 04:53:27 AM |
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18509 2013-06-10 23:56:25 0:01:14 211964 2 0.00024430 none 240828 25.04240000 69 confirmations left
18508 2013-06-10 23:55:11 3:54:51 42050212 1361 0.00034418 none 240827 25.32100720 68 confirmations left
18507 2013-06-10 20:00:20 1:33:52 16795755 522 0.00090143 none 240805 25.09740111 46 confirmations left
18506 2013-06-10 18:26:28 0:01:57 352485 12 0.00088580 none 240792 25.16470194 33 confirmations left
18505 2013-06-10 18:24:31 0:32:10 5825448 200 0.00080095 none 240791 25.54380000 32 confirmations left 18504 2013-06-10 17:52:21 0:04:35 836503 32 0.00101263 none 240790 25.15770000 31 confirmations left
18503 2013-06-10 17:47:46 0:03:42 666077 23 0.00079872 none 240789 25.00000000 30 confirmations left
18502 2013-06-10 17:44:04 4:28:24 48694620 1491 0.00072006 none 240787 25.20260000v 28 confirmations left
18501 2013-06-10 13:15:40 2:05:14 22566776 704 0.00103067 none 240760 25.26324013 1 confirmations left
anyone want to guess the 3 min window i restarted my rig.....
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vs3
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June 11, 2013, 07:24:29 AM |
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anyone want to guess the 3 min window i restarted my rig.....
Perfect timing! edit: For that reason I keep waiting for the round to end and _then_ restart/shutdown/etc - in the worst case you lose just a little bit.
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iFA88
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June 11, 2013, 09:11:59 AM |
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I think it no longer worth it with GPU mine. I have now one AMD 6870 VGA with 300mphs performance. 4.3 shares / minute = 6192 shares / 24 H = 0,0095976 BTC / 24 H (50BTC.com with PSS for 0.00000155 / share) = 0.863 Euro / 24 H.
My power cost in Hungary is 0.20 Euro / Kwh
My PC power use: 0.24 kwh = 5,76 Kw / 24 H = 1,152 Euro / 24 H
My 24H profit is now: -0,289 Euro / day
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Lucko
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June 11, 2013, 09:24:48 AM |
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I think it no longer worth it with GPU mine. I have now one AMD 6870 VGA with 300mphs performance. 4.3 shares / minute = 6192 shares / 24 H = 0,0095976 BTC / 24 H (50BTC.com with PSS for 0.00000155 / share) = 0.863 Euro / 24 H.
My power cost in Hungary is 0.20 Euro / Kwh
My PC power use: 0.24 kwh = 5,76 Kw / 24 H = 1,152 Euro / 24 H
My 24H profit is now: -0,289 Euro / day
If you switch to LTC you will probably just brake even...
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iFA88
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June 11, 2013, 09:37:36 AM |
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I think it no longer worth it with GPU mine. I have now one AMD 6870 VGA with 300mphs performance. 4.3 shares / minute = 6192 shares / 24 H = 0,0095976 BTC / 24 H (50BTC.com with PSS for 0.00000155 / share) = 0.863 Euro / 24 H.
My power cost in Hungary is 0.20 Euro / Kwh
My PC power use: 0.24 kwh = 5,76 Kw / 24 H = 1,152 Euro / 24 H
My 24H profit is now: -0,289 Euro / day
If you switch to LTC you will probably just brake even... With LTC: 0.022 LTC / hour = 0.528 LTC / day = 1.056 Euro / day. (current value 2 euro / LTC) My 24H Profit from LTC is: -0,096 Euro / day
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Paulizei
Member
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Activity: 98
Merit: 10
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June 11, 2013, 10:57:46 AM |
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I think it no longer worth it with GPU mine. I have now one AMD 6870 VGA with 300mphs performance.
A low power pc (intel i3 t-series e.g.) and more efficient gpu (amd 7xxx) should bring you back into business.
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HellDiverUK
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June 11, 2013, 11:03:09 AM |
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I saved 250W at the wall by swapping a HD6970 with a HD7950, and swapping the AMD FX8320/990FX with a i5-3350P/C206. 200W of that was from the GPU swap alone.
The swap cost me nothing due to reselling the old equipment, and buying the new stuff used.
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Paulizei
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Activity: 98
Merit: 10
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June 11, 2013, 11:21:43 AM Last edit: June 11, 2013, 10:31:33 PM by Paulizei |
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a power efficient power supply (=not too big! workload around 50% plus 80+ standard) would save some more watts.
btw does anyone have an idea what effects cgminers cpu usage? On my WinXP/2003 32bit machines (catalyst 11.11) cgminer uses about 70-80% and on my 64bit Win7/2008R2 machines (catalyst 13.1) it's only about 3-4%.
i'm asking this because cpu usage does affect power consumption
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HellDiverUK
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June 11, 2013, 11:50:27 AM |
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btw does anyone have an idea what effects cgminers cpu usage? On my WinXP/2003 32bit machines (catalyst 11.11) cgminer uses about 70-80% and on my 64bit Win7/2008R2 machines (catalyst 13.1) it's only about 3-4%.
i'm asking this because cpu usage does affect power consumption
I asked the same question in the cgminer thread. I got some BS about drivers and SDKs. Odd that two identical machines with identical drivers and the same cgminer config can vary between 75% and 2% CPU. On a third identical machine cgminer won't even run. All running 7x64, 12.8 drivers. I've pretty much given up on cgminer and am using BFGminer, it's consistent and works. And it works on the same machines cgminer just crashes on.
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bspurloc
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June 11, 2013, 01:09:16 PM |
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btw does anyone have an idea what effects cgminers cpu usage? On my WinXP/2003 32bit machines (catalyst 11.11) cgminer uses about 70-80% and on my 64bit Win7/2008R2 machines (catalyst 13.1) it's only about 3-4%.
i'm asking this because cpu usage does affect power consumption
I asked the same question in the cgminer thread. I got some BS about drivers and SDKs. Odd that two identical machines with identical drivers and the same cgminer config can vary between 75% and 2% CPU. On a third identical machine cgminer won't even run. All running 7x64, 12.8 drivers. I've pretty much given up on cgminer and am using BFGminer, it's consistent and works. And it works on the same machines cgminer just crashes on. The machine where it wont run, did you try RUN AS ADMIN on the first run?
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bspurloc
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June 11, 2013, 01:13:06 PM |
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Is there any tricks to cut down the Video Driver from crashing. Besides lower GPU Mhz. I am asking because I have 3 machines identical in all ways brand new win7 installs 64bit, Sapphire 7870xt cards. I can run 2 no issues at 1200Mhz GPU mining 525 mh/s while the 3rd one the video driver seems to crash above 1145Mhz after several hours. The 2 at 1200 run at 71C and 76C while the driver crashing one runs at 75C.
Increasing core voltage helps to increase overclocking stability at the cost of increased heat production. Even with the same model, each GPU chip is different and has its own clock speed stability profile, so the fact that one out of your three is more touchy than the others is not to be unexpected. Since you can handle a few more degrees of thermal load before cooking your chips, I'd recommend boosting your voltage a bit and see if your temp stays below 85C. Let us know if your system likes is. Blah I tried increasing the voltage and the driver still crashes above 1145 and card only at 75C. Mind u as I noted this card was running perfectly fine at 1185 before I reinstalled the OS. very annoying windows is. Maybe I will try uninstalling the drivers and see what happens. blah.
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Behemot
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June 11, 2013, 01:19:41 PM |
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18514 2013-06-11 13:13:44 1:01:33 11258251 none none 240926 25.28100000 100 potvrzení zbývá Don't panic?
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nottm28
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June 11, 2013, 01:22:45 PM |
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18514 2013-06-11 13:13:44 1:01:33 11258251 none none 240926 25.28100000 100 potvrzení zbývá Don't panic? This means you get nothing for mining - you need at least 55 posts before you start getting payouts...
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donations not accepted
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Behemot
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June 11, 2013, 01:24:38 PM |
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What? My three righs with 400 MH/s are all running. That's just some bullshit. I also noticed one miner said pool requested block restart. What's with that 55 posts? EDIT// it's corrected now
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digital
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June 11, 2013, 02:06:15 PM |
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What's with that 55 posts?
That is what you call a successful trolling...
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If I help you out: 17QatvSdciyv2zsdAbphDEUzST1S6x46c3 References (bitcointalk.org/index.php?topic=): 50051.20 50051.100 53668.0 53788.0 53571.0 53571.0 52212.0 50729.0 114804.0 115468 78106 69061 58572 54747
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Tamis
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June 11, 2013, 02:29:07 PM |
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I loved the 55 posts threshold A little question, I need to cut cgminer in order to be able to use a rfid card reader on my computer (won't work for some reason if cgminer is running), what is the recommended delay before restarting the miner and not piss off the server ?
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