|
Title: 5850 Not Up To Speed Post by: watwugy on May 08, 2011, 11:04:43 PM My 5850 is only generating about 220 mhash/s. I've seen many getting around 300/s. Does anyone know what could be causing this? I have no graphically intense processes running, and my drivers are all up to date, so why isn't my card performing like it should?
Title: Re: 5850 Not Up To Speed Post by: Sonata on May 08, 2011, 11:21:05 PM OS?
Miner? Drivers? ATi Stream Version? 5850 Model Numbers? Title: Re: 5850 Not Up To Speed Post by: Convery on May 08, 2011, 11:27:00 PM I get 400Mhash/s using;
OS: Windows XP x86 Miner: Phoenix 0.3 or 0.4 CCC: 10.12 Sapphire 5850 Toxic 1Gb Clocks; core: 1050 memory: 1200 effective (300) volt: 1.25 Title: Re: 5850 Not Up To Speed Post by: SgtSpike on May 09, 2011, 12:08:43 AM Convery, how did you manage to be able to adjust the voltage?
Title: Re: 5850 Not Up To Speed Post by: grue on May 09, 2011, 12:10:23 AM Convery, how did you manage to be able to adjust the voltage? some cards, namely reference ones, can adjust voltage. :pTitle: Re: 5850 Not Up To Speed Post by: Camron on May 09, 2011, 08:06:14 AM I have same issue. I have a Sapphire 5850 Xtreme:
OS: Windows 7 Miner: POCLBM GUI (any flags will cause the miner to crash) Drivers: Latest ATI Stream: 10.4 5850 Model number: Sapphire 5850 Xtreme Edition 1GB Mine rate: 220 Mh/s @ stock clock, 240 Mh/s @ 775 Mhz, 262 Mh/s @ 850 Mhz My card is not stable at 900Mhz so I have not tried it yet, I will probably need to adjust the voltage. Title: Re: 5850 Not Up To Speed Post by: SgtSpike on May 09, 2011, 08:11:07 AM Weird. I get 270MH/s with the same card (Sapphire 5850 Xtreme) at stock speeds.
Not familiar with stream 10.4... do you mean the CCC version? I use 10.11. Title: Re: 5850 Not Up To Speed Post by: FoS on May 09, 2011, 08:41:24 AM I get ~320MH/s @ 850/1000 with the same card at stock voltage.
I use latest drivers and poclbm gui with flags -v -w128 -f0. You can adjust the voltage of this card with the latest Sapphire Trixx. Title: Re: 5850 Not Up To Speed Post by: Melvin132 on May 09, 2011, 09:36:28 AM I bought 3 Sapphire 5850 Xtreme last week, and 2 of them i can get about 330Mh/s at 880/340 at stock volt stable, if i push the voltage to 1.25 i can get them to about 980 core and about ~400 Mh/s
The other one is stable at 930/340 at stock volt (1.088) giving about 360 Mh/s and is able to give me almost 415 Mh/s when overvolted. The problem is that if i set the vcore to 1.25 it generates way too much heat and also the (electric) cost of running them supersedes the gain. Title: Re: 5850 Not Up To Speed Post by: grndzero on May 09, 2011, 01:02:04 PM I'm looking for a stock 5850 reference cooler. Anyone have a dead reference 5850 card with a working fan/cooler that would be willing to sell me? I'm in USA. I can give up to 15 BTC depending on how fast I can get it.
Title: Re: 5850 Not Up To Speed Post by: Convery on May 10, 2011, 01:19:26 AM Convery, how did you manage to be able to adjust the voltage? Well, Sapphires forums and reviews said that you couldn't increase the voltage but I just opened Trixx (Sapphires overclocking tool) and adjusted it. Only bad part is that my 7 year old PSU exploded =P But with my new PSU the maximum stable (and what I use) is 402Mhash, you can go up to 430Mhash but then you bluescreen after a few hours and my computer is being a bitch when it comes to rebooting.. Also the card never goes above 65C and is placed without a chassis right next to my bed so needless to say it's quiet enough :3 |