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Title: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 16, 2012, 06:18:33 PM Hey,
I'd like to know if this speed is normal with 3x 5870's. I've got them all at 1.0v and engine clocks are 865, 840, 860 mems 300MHz all. This is how my cgminer looks like: Code: cgminer version 2.7.4 - Started: [2012-09-16 21:13:14] I'm using Win7 64bit and latest 12.8 drivers. Should I change SDK to 2.1? Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: monstrs on September 16, 2012, 06:30:27 PM Idont know if thats normal, pretty low scores actualy.
I got 2 HD 5870, both 980/300, catalyst 11.11c, got 450 MH/s per card, total speed ~ 900Mh/s. So beter clock those babies, there is no reason to downclock them at current BTC price. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 16, 2012, 06:46:48 PM I must use undervolt because of high price of electricity in Finland. I will profit more by doing that, but I'd like to get max Mhash with those clock rates that I'm using.
-fankih- Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: monstrs on September 16, 2012, 07:56:05 PM How much do you pay for electricity?
I thought so for a wile too, but when i actualy calculated, it appeared that even with one card in system (HD7970) all system drawing 360W, i am good to overclock as far as i can, if market priceis bigger thant 8$ and my electricity costs ~ 0.27 cents per watt. So calculate that correctly, i am sure, that for today price it is reasonable for you to push from those cards every juice they have :) Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: crazyates on September 16, 2012, 08:42:21 PM You should be getting better MH/s with those cards at those core speeds. I'd say if you're using 12.8, you're also using SDK 2.7, which has crap performance on those 5xxx cards. You can switch to either 2.1 or 2.5 (I used 2.5), and either one will bring you closer to 400MH/s per card.
IIRC, a combination of SDK 2.5, mem of 300, and worksize of 256 worked exceptionally well. For 2.1, you might be better off with worksize of 128 and a lower memory (160-170). Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: ssateneth on September 16, 2012, 09:28:18 PM Those are very low hashrates for those clock speed.
Install 2.1 SDK, verify the 2.1 SDK is installed, and make sure to select the platform when booting up cgminer with the "gpu-platform" command (first platform is 0. 2.1 will likely be platform 1). Also use phatk kernel, worksize 128, and vectors 2. Lastly, you said engine clocks are 865, 840, 860. Use these memory speeds in respective order. 173, 168, 172. You should get 401, 389, and 399 mhash respectively. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 17, 2012, 07:22:11 AM Thank you for the answers. I will try SDK 2.1 today and 2.5 so see which would be the best.
-fankih- Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: Ashitank on September 17, 2012, 02:37:25 PM Just to give a comparison my 3 x 5850 give me 1156 MH/S on Cat 12.1 & SDK 2.1.
Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: hahahafr on September 17, 2012, 08:50:26 PM So if I understand correctly, the SDK 2.1 gives best performance for a 5870, but what about the driver version?
Those are very low hashrates for those clock speed. How do you come up with such strange memory values?Install 2.1 SDK, verify the 2.1 SDK is installed, and make sure to select the platform when booting up cgminer with the "gpu-platform" command (first platform is 0. 2.1 will likely be platform 1). Also use phatk kernel, worksize 128, and vectors 2. Lastly, you said engine clocks are 865, 840, 860. Use these memory speeds in respective order. 173, 168, 172. You should get 401, 389, and 399 mhash respectively. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: segabtc on September 17, 2012, 10:02:43 PM SDK 2.1 will do better for 58xx series. 5830,5850,5870 Got 5 x 5830 pushing almost 1.6 gig, 5 x 5850 almost 2.0 gig and 3 x 5970 little over 2.3 gig.
The odd mem speeds are a ratio based on core and mem speed (i believe). driver 11.10 is the one i use, i think. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: SysRun on September 17, 2012, 10:03:50 PM 1050 is fine. Just get ready to sell them on ebay. None of this will matter in 6 months provided BFL delivers.
Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: crazyates on September 18, 2012, 02:27:09 AM 1050 is fine. It's not fine, tho. He should be >1200Mh/s. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 18, 2012, 05:41:05 AM I put 2.1 SDK and 12.1 drivers and got those running 1200MH/s with 855/875/850 clocks and 1v on every card.
855 ~392 875 ~400+ 850 ~388 But yes I'm going to sell all of them when ASIC's comes out. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: ssateneth on September 18, 2012, 07:07:23 AM So if I understand correctly, the SDK 2.1 gives best performance for a 5870, but what about the driver version? Those are very low hashrates for those clock speed. How do you come up with such strange memory values?Install 2.1 SDK, verify the 2.1 SDK is installed, and make sure to select the platform when booting up cgminer with the "gpu-platform" command (first platform is 0. 2.1 will likely be platform 1). Also use phatk kernel, worksize 128, and vectors 2. Lastly, you said engine clocks are 865, 840, 860. Use these memory speeds in respective order. 173, 168, 172. You should get 401, 389, and 399 mhash respectively. Quite simply I brute forced every reasonable memory frequency for every multiple of 5 core frequency between 675 to 1050. I plugged in the best hashrates and memory speed per core speed into my handy dandy TI-82 and got equations, and voila. :P Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 18, 2012, 09:17:04 AM The memory I'm running those atm is 180MHz. Would it actually change anything to drop down those few MHz more?
Very minor saving in power and heat, nothing more? Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: hahahafr on September 18, 2012, 02:46:00 PM I'm actually struggling installing/downgrading to sdk 2.1 and 11.12 from 12.8 and sdk 2.7 under W7 x64. CGMiner 2.7.5 didn't like the sdk 2.1 and said that no devices was found/usable <opencl sdk not installed> even though 2 lines before it lists the sdk.
Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: hahahafr on September 18, 2012, 04:42:13 PM I put 2.1 SDK and 12.1 drivers and got those running 1200MH/s with 855/875/850 clocks and 1v on every card. Can you tell me how exactly you downgraded to 12.1/2.1? Did you do some tricks or something?855 ~392 875 ~400+ 850 ~388 But yes I'm going to sell all of them when ASIC's comes out. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: segabtc on September 18, 2012, 05:24:45 PM I'm actually struggling installing/downgrading to sdk 2.1 and 11.12 from 12.8 and sdk 2.7 under W7 x64. CGMiner 2.7.5 didn't like the sdk 2.1 and said that no devices was found/usable <opencl sdk not installed> even though 2 lines before it lists the sdk. try grabbing cgminer 2.5.0 and see what happens. The newer miners work better with the new hardware 79xx series. Older miners are better with older software. 5830 = 950c/300m/1.05v = 315mhs 5850 = 925c/300m/1.05v = 385mhs 5970 = 805c/300m/1.05v = 375mhs/core 750 total 6870 = 950c/850m/1.162v = 297mhs newer sdk and driver-2.4, 12.1 i think that is what this one is set at Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: crazyates on September 18, 2012, 05:53:27 PM try grabbing cgminer 2.5.0 and see what happens. The newer miners work better with the new hardware 79xx series. Older miners are better with older software. Where did you read that? I've never heard of that, and I've always used the newest CGMiner. Actually the newer miners should run more efficient, and actually give better results. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 19, 2012, 05:00:13 AM I'm actually struggling installing/downgrading to sdk 2.1 and 11.12 from 12.8 and sdk 2.7 under W7 x64. CGMiner 2.7.5 didn't like the sdk 2.1 and said that no devices was found/usable <opencl sdk not installed> even though 2 lines before it lists the sdk. I had some similar problems but after I cleaned my comp out of all ATI-drivers I managed to get it working :P -fankih- Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: ssateneth on September 19, 2012, 07:38:30 AM I'm actually struggling installing/downgrading to sdk 2.1 and 11.12 from 12.8 and sdk 2.7 under W7 x64. CGMiner 2.7.5 didn't like the sdk 2.1 and said that no devices was found/usable <opencl sdk not installed> even though 2 lines before it lists the sdk. For some reason, standalone 2.1 SDK doesn't have certain things present to allow miner software to detect it. You need another SDK installed along side it (2.4 or higher). Use the "gpu-platform" command to select the appropriate 2.1 sdk platform once you have both sdk installed Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: Shadow383 on September 19, 2012, 03:32:04 PM what flags/intensity are you using?
Try setting -v -w 128 -I 9 Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 20, 2012, 02:47:35 PM Here is how I'm running these now.
Code: {And here is the output : Code: cgminer version 2.7.4 - Started: [2012-09-20 17:22:54] Cards are GPU 0 = Asus Reference 5870 GPU 1 = Asus EAH5870 (I use it also for main display and for gaming) GPU 2 = Club Reference 5870 The best clocking one is EAH by all means and what comes as not a surprise the club one clocks the worst. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: crazyates on September 20, 2012, 04:04:48 PM Those are really hot. You sure the mem is properly set to 300? What are your fan settings?
Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 20, 2012, 04:30:04 PM There was my config file. Mems are 180 / 190 / 180
Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: crazyates on September 20, 2012, 04:33:40 PM There was my config file. Mems are 180 / 190 / 180 Yep I see it now. But you still don't have any fan control set up in CGMiner. "--auto-fan --gpu-fan 25-75 --temp-target 70" will do you wonders. Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: fankih on September 20, 2012, 05:01:45 PM I don't want to hear that noise because I'm living with this thing computer over here :P
I'd rather run them hotter because I will sell them anyway when asics comes.. ;) Title: Re: 3x 5870 avg ~1050MH/s normal? Post by: Turbor on September 20, 2012, 06:59:56 PM You get used to the fan "noise" :D
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