Topic: 3x 5870 avg ~1050MH/s normal? - page 2. (Read 2593 times)
Just to give a comparison my 3 x 5850 give me 1156 MH/S on Cat 12.1 & SDK 2.1.
Thank you for the answers. I will try SDK 2.1 today and 2.5 so see which would be the best.
-fankih-
-fankih-
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.
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.
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).
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).
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
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
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-
-fankih-
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.
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.
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:
I'm using Win7 64bit and latest 12.8 drivers. Should I change SDK to 2.1?
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]
--------------------------------------------------------------------------------
(5s):1021.8 (avg):1038.4 Mh/s | Q:42 A:49 R:3 HW:0 E:117% U:11.8/m
TQ: 0 ST: 7 SS: 0 DW: 11 NB: 2 LW: 98 GF: 2 RF: 0 WU: 13.0
Connected to http://gpumax.com:8332 with LP as user xxxxxxxxxxx
Block: 0000037ccdb444aa9cd797ddd74fcac7... Started: [21:16:30]
--------------------------------------------------------------------------------
[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
GPU 0: 70.0C 2004RPM | 356.2/358.5Mh/s | A:17 R:0 HW:0 U: 4.10/m I: 9
GPU 1: 76.0C 2104RPM | 346.3/347.6Mh/s | A:22 R:1 HW:0 U: 5.31/m I: 9
GPU 2: 75.5C 1914RPM | 352.8/352.8Mh/s | A:12 R:2 HW:0 U: 2.90/m I: 9
--------------------------------------------------------------------------------
[2012-09-16 21:16:50] Accepted dd7160e8.d8abe992 GPU 1 pool 0
[2012-09-16 21:16:53] Accepted f8172046.5304864a GPU 1 pool 0
[2012-09-16 21:16:54] Accepted 577189d3.2fd727ed GPU 1 pool 0
[2012-09-16 21:16:55] Accepted a38a8a97.c7919796 GPU 0 pool 0
[2012-09-16 21:17:11] Accepted 53514969.622c0e42 GPU 1 pool 0
[2012-09-16 21:17:12] Accepted b18bbec9.af9f972d GPU 0 pool 0
[2012-09-16 21:17:13] Accepted cb408003.a31cb4e1 GPU 1 pool 0
[2012-09-16 21:17:18] Accepted bed9332d.dce16009 GPU 1 pool 0
[2012-09-16 21:17:19] Accepted 2384ce5b.4429a834 GPU 2 pool 0
[2012-09-16 21:17:24] Accepted d88f20b2.9c88f407 GPU 2 pool 0
[2012-09-16 21:17:24] Accepted 5c0c3b89.b2a71d4c GPU 1 pool 0
I'm using Win7 64bit and latest 12.8 drivers. Should I change SDK to 2.1?
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