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Title: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: Peleus on April 15, 2013, 10:58:41 AM Hardware
4x 7950, 8GB of Ram, FX-6100 processor. Software Catalyst 12.8 ADL SDK 5.0 APP SDK 2.7 Xubuntu 12.04 CGMiner 2.11.4 What was happening before - Previously I was running this rig with 3 cards. I was getting ~1.5 Mh/s - 500 Kh/s per card. Not mind blowing, but acceptable. I was using the following command to start. Code: export DISPLAY=:0 What is happening now - So now I've upgraded my rig by adding an extra card. Instead of getting gains it seems my cards are simply running slower apart from GPU0. https://i.imgur.com/lr36Rge.png It seems even at lower intensities now it's mining unevenly (@ I=13) https://i.imgur.com/4WviBjX.png Instead of getting 500 Kh/s I'm getting ~ 350 - 400 a card, even though with the same settings before I was getting 500 (same as GPU0). Can anyone suggest trouble shooting methods or ideas as to whats going on? Help appreciated. Title: Re: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: hedon on April 15, 2013, 02:58:21 PM Maybe try changing PCI Latency setting in bios. Hope it helps ;)
Title: Re: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: Rawted on April 15, 2013, 03:34:19 PM What PSU?
Title: Re: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: Peleus on April 15, 2013, 09:58:44 PM Maybe try changing PCI Latency setting in bios. Hope it helps ;) Thanks I'll give it a go. What PSU? Corsair HX1050 Title: Re: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: Marv21 on April 19, 2013, 02:59:20 PM MY 4x7950 use nearly 1300W...
Title: Re: Poor Unbalanced Performance - 7950 x 4 - Litecoin Post by: rograz on April 19, 2013, 03:58:32 PM MY 4x7950 use nearly 1300W... my 6x7950 are pulling 1050W at the wall (810MHz@0,875V), the price you pay for overvolting/overclocking ::) |
