Quote from: hodger on January 09, 2014, 11:19:20 PM

Quote from: crazyates on January 09, 2014, 02:30:01 PM

I got a bunch of PowerColor R9 290 cards, and noticed they run best at a engine/mem ratio of ~0.74. You could probably get higher than 800 if you kept that ratio, but overclocked a little bit.

All my settings run at Powertune @ +20
1105/1500 gets me 855
1075/1450 gets me 835
1050/1400 gets me 810
1025/1350 gets me 795

I would love to run them at 850+ each, but the temps are too high for my liking right now, so I have to downclock. We're going to move them in a couple of weeks and install some more AC units. Hopefully between that and 2 weeks of burn in will allow us to overclock even further.

Quick question....Is this at stock voltage?

OK, thought I'd updated posters so far:

WALL 950w powertune0 938/1250 (START POINT)
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(5s):2.287M (avg):2.234Mh/s | A:4506112 R:156672 HW:0 WU:2018.6/m
ST: 2 SS: 16 NB: 3838 LW: 37536 GF: 3 RF: 0
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GPU 0: 80.0C 3622RPM | 746.6K/744.4Kh/s | A:1483776 R:56832 HW:0 WU: 668.5/m I:20
GPU 1: 81.0C 3481RPM | 743.2K/744.8Kh/s | A:1495552 R:52736 HW:0 WU: 671.7/m I:20
GPU 2: 70.0C 3390RPM | 745.4K/744.9Kh/s | A:1526784 R:47104 HW:0 WU: 678.4/m I:20
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935w powertune20 938/1250 (POWER USAGE DROPPED SLIGHTLY AND WU DROPPED A FAIR BIT???)
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(5s):2.194M (avg):2.228Mh/s | A:16384 R:0 HW:0 WU:1860.7/m
ST: 2 SS: 0 NB: 13 LW: 126 GF: 0 RF: 0
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GPU 0: 79.0C 3620RPM | 743.5K/746.2Kh/s | A:7168 R:0 HW:0 WU: 609.0/m I:20
GPU 1: 80.0C 3481RPM | 744.1K/744.2Kh/s | A:5632 R:0 HW:0 WU: 612.3/m I:20
GPU 2: 70.0C 3391RPM | 745.7K/746.2Kh/s | A:3584 R:0 HW:0 WU: 647.1/m I:20
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1040w powertune10 1025/1350 (BIT MORE WU BUT 100W MORE AT THE WALL)
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(5s):2.414M (avg):2.349Mh/s | A:9216 R:0 HW:0 WU:1979.5/m
ST: 2 SS: 0 NB: 9 LW: 103 GF: 0 RF: 0
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GPU 0: 82.0C 3612RPM | 788.2K/784.0Kh/s | A:1536 R:0 HW:0 WU: 619.6/m I:20
GPU 1: 87.0C 3473RPM | 804.5K/801.0Kh/s | A:5632 R:0 HW:0 WU: 752.7/m I:20
GPU 2: 75.0C 3379RPM | 792.0K/789.6Kh/s | A:2560 R:0 HW:0 WU: 663.1/m I:20
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1040w powertune20 1025/1350 (SAME AT WALL AS TUNE10 BUT WU UP ABOUT 10% TOO FROM WHERE I STARTED)
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(5s):2.346M (avg):2.351Mh/s | A:16896 R:1024 HW:0 WU:2288.4/m
ST: 2 SS: 0 NB: 16 LW: 144 GF: 0 RF: 0
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GPU 0: 83.0C 3616RPM | 803.0K/781.6Kh/s | A:6144 R:512 HW:0 WU: 728.1/m I:20
GPU 1: 89.0C 3476RPM | 804.5K/800.1Kh/s | A:5632 R: 0 HW:0 WU: 830.4/m I:20
GPU 2: 77.0C 3381RPM | 785.5K/788.5Kh/s | A:5120 R:512 HW:0 WU: 760.3/m I:20
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1060w powertune20 1050/1400 (MORE WALL POWER, LESS WU)
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(5s):2.381M (avg):2.364Mh/s | A:6656 R:1536 HW:0 WU:2125.6/m
ST: 2 SS: 0 NB: 10 LW: 89 GF: 1 RF: 0
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GPU 0: 78.0C 4148RPM | 768.8K/789.5Kh/s | A:4096 R: 0 HW:0 WU: 670.5/m I:20
GPU 1: 80.0C 4080RPM | 811.4K/811.6Kh/s | A:1536 R:1024 HW:0 WU: 749.7/m I:20
GPU 2: 69.0C 3957RPM | 783.2K/793.2Kh/s | A:1024 R: 512 HW:0 WU: 725.3/m I:20
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So for now I've settled on powertune20 1025/1350

At this point, I have two questions...

- Based on my cgminer.conf, is it normal that my wall usage and WU dropped when I turned on powertune without increasing clocks?

- Am I right in thinking that WU is ultimately more important than hashrate? So if hashrate goes up a bit, but WU drops, that's worse right? Just checking the things I've read previously are correct?

thanks again all.....