Topic: All Sapphire 7950s (11196-19-20G) are not suitable for mining? - page 2. (Read 16872 times)
i recently purchased sapphire cards (270x), yet to start mining. What are the safety precautions i should take?
i think overclocking these cards make them die...
Wrong. Read my posts...
oke the 11196-19-40g cards with locked voltage then..atleast a lot of them die when overclocking
i think overclocking these cards make them die...
Wrong. Read my posts...
I also have an older model (11196-16-20G) and that one's been working perfectly since early last year!
I've also had one card of the 11196-16-20G model for about 8 months running 24/7. The place where I keep the mining rig (due to absolute lack of space) isn't well ventilated and the GPU stays at ~82 celsius most of the time, with the VRM's at ~90 celsius. I know that's high but there's nothing I can do about it right now. Anyways, the card has been running perfectly all that time without a single freeze ever. I was really disappointed with the fans Sapphire used on the card though - very low quality chinese plastic and horribly noisy even at moderate speeds. Wouldn't buy another Sapphire card again.
I bought four of these cards in January, one by one they dropped like flies, got one left. Ironically the three that have died had Hynix memory and the one remaining card has Elpida, and hashes much lower than the other 3 cards.
What temps did you run them at ?
Bought 3 of those 2 months ago, one died the first week, possibly because i ran them at a 80°C target, but the others survived probably because i keep them below or at 70°C now.
I can reach 620Kh/s with fans at 70%.
Same stats. SMOS has by default:
"temp-cutoff" : "85",
"temp-overheat" : "75",
"temp-target" : "70",
I've had no issue with my cards yet. Hope it stays that way. I do have to reboot it regularly though.
I bought four of these cards in January, one by one they dropped like flies, got one left. Ironically the three that have died had Hynix memory and the one remaining card has Elpida, and hashes much lower than the other 3 cards.
What temps did you run them at ?
Bought 3 of those 2 months ago, one died the first week, possibly because i ran them at a 80°C target, but the others survived probably because i keep them below or at 70°C now.
I can reach 620Kh/s with fans at 70%.
The remaining card is running at 72 which is roughly what the other 3 were running at.
i think overclocking these cards make them die...
Sparks and purple smoke on 2 out of 4 cards now.
I bought 5 of these cards 3 weeks ago and 1 died today. I keep them at 70°C. But the problem for me seems to be the fan. Two of my cards run at 90% speed. One of the fan became very slow today and then the card started producing hardware errors. I am still taking a replacement instead of money back as I can't find another card for this price.
Now I have spaced the cards a bit better and see fan rpms of 45%, 60%, 67% and 74% on the remaining 4 fans.
Now I have spaced the cards a bit better and see fan rpms of 45%, 60%, 67% and 74% on the remaining 4 fans.
I bought four of these cards in January, one by one they dropped like flies, got one left. Ironically the three that have died had Hynix memory and the one remaining card has Elpida, and hashes much lower than the other 3 cards.
What temps did you run them at ?
Bought 3 of those 2 months ago, one died the first week, possibly because i ran them at a 80°C target, but the others survived probably because i keep them below or at 70°C now.
I can reach 620Kh/s with fans at 70%.
I bought four of these cards in January, one by one they dropped like flies, got one left. Ironically the three that have died had Hynix memory and the one remaining card has Elpida, and hashes much lower than the other 3 cards.
I think that I know the issue of all this... Yesterday to my cousin, died your first Sapphire 7950 (11196-19-20G) and like no, SN: A1351000286XX and today I see the card and all seem be ok, capacitors are ok but in the heatsinks of VMR's i saw an oil slick (and i remember that some of my gpus dead also had this oil slick) so I suspect seriously that any VRM exploited or burned and why Hynix VRM hasn't this problem, perhaps ELPIDA is a holy crap and Sapphire not be guilty of all.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
I got the A1351.
Afaik A135100028XXX and A135100029XXX have been conflictives for me. These gpus at 24/7 not lasted more than 2 months mining, in differents rigs, with different hardware and configuration but all the dead gpus had one thing in common the PN reference in all cards was 299-1E249-100SA and the SN starting always at A1350 and A1351.
My last 2 dead cards:
ASIC = 69,4% ---> 1,168v @ 1100 core - 1480 memory | 75%-fan-fixed | temps between 66º and 79º | SN: (A135000034XXX) (buy in France)
ASIC = 76,1% ---> 1,125v @ 1080 core - 1250 memory | 80%-fan-fixed | temps between 61º and 72º | SN: (A135100028XXX) (buy in Spain)
I think that I know the issue of all this... Yesterday to my cousin, died your first Sapphire 7950 (11196-19-20G) and like no, SN: A1351000286XX and today I see the card and all seem be ok, capacitors are ok but in the heatsinks of VMR's i saw an oil slick (and i remember that some of my gpus dead also had this oil slick) so I suspect seriously that any VRM exploited or burned and why Hynix VRM hasn't this problem, perhaps ELPIDA is a holy crap and Sapphire not be guilty of all.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
I got the A1351.
I have 4 x Sapphire 7950s, they run well. One is shittier than the other three. Haven't been long term mining though.
What's everyone's hashrate? I get 620 on 3 and the other jumps between 590 and 620.
What's everyone's hashrate? I get 620 on 3 and the other jumps between 590 and 620.
I think that I know the issue of all this... Yesterday to my cousin, died your first Sapphire 7950 (11196-19-20G) and like no, SN: A1351000286XX and today I see the card and all seem be ok, capacitors are ok but in the heatsinks of VMR's i saw an oil slick (and i remember that some of my gpus dead also had this oil slick) so I suspect seriously that any VRM exploited or burned and why Hynix VRM hasn't this problem, perhaps ELPIDA is a holy crap and Sapphire not be guilty of all.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
So I recommended if you have any Sapphire (11196-19-20G) with SN starting for A1350 or A1351 not upload the memory core more than 1250 Mhz and if you have money, buy an accelero xtreme 7970 your VRM heatsinks are 100x better than Sapphire.
how come that when i overclock my 7950 it dies when i get the asus anti power surge triggered message. But when i dont overclock and i get the asus anti power surge message the cards are still working?
I'm not sure about the auto fan can do this. In gpus with no conflictive SN like A1343000XXXXX and A1345000XXXXX i had my fans fixed at only 65% during 2 weeks (in holidays) about 3-4 hours each day this cards peaks temps up to 85-90ºC and no problem i have these gpus more than 9 months mining 24/7. Contra my dead cards had fixed fan at 80% with temps always under 75º C.
I just burned yet another card today (5th card in less than 3 months). Again, no overclocking or anything.
This time I had set the fan speed to auto with a minimum of 60%, had 2 cards in the system of which the oldest one burned up (maybe 1 month old or so). The newer one still works fine.
The thing is... I had the fans to 70 for weeks and this was the first night I tried 60 fan speed. So maybe there's some truth in what some poster said earlier: the temperature sensor and automatic fan control on the cards is total shit and results in frying up a certain part of the card with no sensor when mining.
So my conclusion to this is: keep fan speed at 70% or higher and see if it helps...
This time I had set the fan speed to auto with a minimum of 60%, had 2 cards in the system of which the oldest one burned up (maybe 1 month old or so). The newer one still works fine.
The thing is... I had the fans to 70 for weeks and this was the first night I tried 60 fan speed. So maybe there's some truth in what some poster said earlier: the temperature sensor and automatic fan control on the cards is total shit and results in frying up a certain part of the card with no sensor when mining.
So my conclusion to this is: keep fan speed at 70% or higher and see if it helps...
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