|
Title: 7950 Sapphire dead Post by: titolr10 on January 27, 2014, 01:56:16 AM Hi!
After few days of mining, my 3 of 14 Sapphire 7950 boost edition cards just dead (Even PSU doesnt start, when they are connected). I dont even try to change voltage. They all work on 1100 engine clock and 1250 memory clock. The other cards restart system without a reason sometimes. Is there a possibilty, that i buy cards with defect? Or this maybe my foult? I think 1100 is not too high.. BR! Title: Re: 7950 Sapphire dead Post by: sunszl on January 27, 2014, 02:27:03 AM too fast. GPU should be @800.
Title: Re: 7950 Sapphire dead Post by: titolr10 on January 27, 2014, 02:42:09 AM I have stable temps ~70C, and everyone in each sites have above 1100 gpu engine.
I dont have AMD driver crash. This could be possible, that i can set engine higher than 1000? Title: Re: 7950 Sapphire dead Post by: Prelektro on January 27, 2014, 03:16:56 AM https://www.sapphireforum.com/showthread.php?32967-Sapphire-7950-Dual-X-Bios-015-040-000-001-000000-Wth
had the same problem. 3 cards dead, retailer changed them, now using them undervolted at stock clocks. return them if you can and get some other card. Title: Re: 7950 Sapphire dead Post by: zackclark70 on January 27, 2014, 03:21:51 AM I run the same cards at 1050core 1250 mem 1.050v core and get 630-660kh I cant see 50mhz more being an issue as a lot of people run more than 1100mhz
have you made sure its not the motherboard or PSU ? Title: Re: 7950 Sapphire dead Post by: Prelektro on January 27, 2014, 03:24:54 AM I'm %100 sure there is problem with these new released 7950 sapphires - i had read reports from 2-3 different miners . it's not about motherboard,psu etc. i had sapphires dead on different mobos, psu's in 2 weeks. temperatures seem normal while mining but there is something getting hot other than core. you better undervolt your cards or they will die 1 by 1 eventually (or simply return them) i'm using my cards at 0.962 V with 925/1250 clocks and getting 560 khash.
Title: Re: 7950 Sapphire dead Post by: zackclark70 on January 27, 2014, 03:30:27 AM I'm %100 sure there is problem with these new released 7950 sapphires - i had read reports from 2-3 different miners . it's not about motherboard,psu etc. i had sapphires dead on different mobos, psu's in 2 weeks. temperatures seem normal while mining but there is something getting hot other than core. you better undervolt your cards or they will die 1 by 1 eventually (or simply return them) i'm using my cards at 0.962 V with 925/1250 clocks and getting 560 khash. I must have the older ones they have been running 7 months no issues :) Title: Re: 7950 Sapphire dead Post by: titolr10 on January 27, 2014, 11:46:40 AM Those are 11196-19-20G.
Any stable bioses? Or how to undervolt them? I tried msi afterburn and I can't chage voltage there.. Title: Re: 7950 Sapphire dead Post by: Prelektro on January 27, 2014, 02:25:19 PM i used sapphire trixx, it should work.
Title: Re: 7950 Sapphire dead Post by: Wipeout2097 on January 27, 2014, 02:27:31 PM Those are 11196-19-20G. http://www.techpowerup.com/forums/threads/vbe7-vbios-editor-for-radeon-hd-7000-series-cards.189089/Any stable bioses? Or how to undervolt them? I tried msi afterburn and I can't chage voltage there.. Title: Re: 7950 Sapphire dead Post by: Silvano on January 27, 2014, 02:44:38 PM i have 1 card 11196-19-20g on my desktop
bios: 015.029.000.002.000000 (113-1E249100-S41) driver: 13.251.0.0 (cat 13.12) Win7 64bit gpu clock 1025 Memory clock 1500 undervolted by TriXX @1100w it works @1.025V (gpu-z 7.5 data) I 18, Kh/s 588 stable, no HW err, consumption: 295w at the wall (idle 70w) I 19, Kh/s 603 stable, no HW err, consumption: 299w I 20, Kh/s 615 stable, no HW err, consumption: 303w temp: 73C. fan 1800 rpm i use SGminer 4.0.0 hope this data may help you. |