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Title: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: RustyShackleford1950 on May 02, 2013, 01:56:35 PM Does anyone else have these cards?
They're eating 400W per card under load! Here are my settings: cgminer --device 0 --device 1 --remove-disabled --scrypt -I 20 --gpu-engine 1100 --gpu-memclock 1400 --thread-concurrency 21712 Getting about 610kh/s each, screenshot: https://i.imgur.com/bRvNsR0.png cgminer reports VDDC as 1.125V, gpu-z confirms this Anyone know what could be going on? Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: RustyShackleford1950 on May 02, 2013, 02:22:19 PM Just tried some new settings
cgminer --device 0 --device 1 --remove-disabled --scrypt -I 19 --worksize 256 --gpu-engine 1010 --gpu-memclock 1250 --thread-concurrency 16384 --vectors 1 no real reduction Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: RustyShackleford1950 on May 02, 2013, 02:43:21 PM hah, never mind, turns out i had the kill a watt power meter plugged into a power board and apparently you get contamination from other appliances
down to a more reasonable 450w Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: andrewsg on May 02, 2013, 03:34:47 PM hah, never mind, turns out i had the kill a watt power meter plugged into a power board and apparently you get contamination from other appliances down to a more reasonable 450w Was just going to say, it's not possible. :) Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: chungenhung on May 02, 2013, 04:48:51 PM why would it get contamination from other appliances??? The meter would show exactly what is plugged into it. The appliances on other sockets wouldn't matter.
Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: RustyShackleford1950 on May 02, 2013, 10:14:56 PM why would it get contamination from other appliances??? The meter would show exactly what is plugged into it. The appliances on other sockets wouldn't matter. I don't know, but it did originally. Now it appears to have levelled out. Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: YipYip on May 02, 2013, 11:20:02 PM hah, never mind, turns out i had the kill a watt power meter plugged into a power board and apparently you get contamination from other appliances down to a more reasonable 450w ...lol good one jr Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: nick0016 on May 02, 2013, 11:35:04 PM You are doing better than my Shappire 7970 Vapor-X (540 Kh/s)...
Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: grue on May 02, 2013, 11:41:59 PM why would it get contamination from other appliances??? The meter would show exactly what is plugged into it. The appliances on other sockets wouldn't matter. he forgot to decontaminate the power strip with a class 3 UL certified electromagnetic interference removal solution.Title: Re: Ridiculous power consumption with 2x7950 sapphire vapor-x Post by: zero3112 on May 08, 2013, 12:56:54 AM Nice ;D
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