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pr0d1gy (OP)
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July 19, 2013, 03:58:50 PM |
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Zanatos666
Sr. Member
 Offline
Activity: 280
Merit: 250
Sometimes man, just sometimes.....
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July 19, 2013, 04:16:42 PM |
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Only time I have seen something like this is when someone is mining LTC. Seems to be pushing those cards to do more memory based things versus GPU based things really is havoc on those cards.
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Squiggly letters, written really fast, with a couple of dots for good measure.
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pr0d1gy (OP)
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July 19, 2013, 04:18:30 PM |
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Yea, it was mining ltc... Damn it man... So is it just this GPU or litecoin mining in general?
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peonminer
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July 19, 2013, 04:46:16 PM |
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Yea, it was mining ltc... Damn it man... So is it just this GPU or litecoin mining in general?
LTC |
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pr0d1gy (OP)
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July 19, 2013, 04:58:06 PM |
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Yea, it was mining ltc... Damn it man... So is it just this GPU or litecoin mining in general?
LTC damn it man... so how do u mine ltc without mining ltc? my mobo, cpu, and ram was free (old pc) then i bought 3 gpus... i need 4 more months to pay it off. lol |
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kuusj98
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July 19, 2013, 06:01:59 PM |
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Holy shit!
What clocks did you run em?
Seems like low quality parts...
I run my HD7850's mem@ 1500 (6000 effective), stock is 1200, and havent had any problem, I have Asus ones....
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xgtele
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July 19, 2013, 06:05:42 PM |
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Holy shit!
What clocks did you run em?
Seems like low quality parts...
I run my HD7850's mem@ 1500 (6000 effective), stock is 1200, and havent had any problem, I have Asus ones....
Stock clocks, not overheated. My pics is here: http://imgur.com/a/ovHug/ |
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crazyates
Legendary
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Activity: 952
Merit: 1000
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July 19, 2013, 06:35:02 PM |
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Those Gigabyte coolers keep the core nice and cool, but the VRM temps can reach ridiculous numbers. My 7970 was hitting 110+C before I realized it. Now I undervolt, and I never see >80C. And that was BTC mining, so I'm sure LTC pulls more A thru them, causing more heat.
Stock coolers have the VRMs making contact with the main heatsink directly, before the core. The fan blows over the heatsink, reaching the VRMs, and then the core. Keeps those VRM temps down, while increasing the core temps a little bit. On these Gigabyte ones, the fans blow the air through the heatsink, and then onto the tiny little VRM heatsink. That VRM heatsink is way too small, and it's only receiving hot air which has been used to cool the core. Bad design.
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pr0d1gy (OP)
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July 19, 2013, 06:35:49 PM |
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clocks werent too high. like 1100/1350... Temp varies from 60-78c.... damn it man...
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peonminer
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July 20, 2013, 09:36:16 PM |
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clocks werent too high. like 1100/1350... Temp varies from 60-78c.... damn it man...
I'm going to go out on a limb and say you do NOT have powered risers. An expensive mistake. |
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pr0d1gy (OP)
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July 20, 2013, 10:01:05 PM |
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clocks werent too high. like 1100/1350... Temp varies from 60-78c.... damn it man...
I'm going to go out on a limb and say you do NOT have powered risers. An expensive mistake. No...Never really knew about the risers till too late, and now wtf is a powered riser? please explain? :-) |
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Zanatos666
Sr. Member
Offline
Activity: 280
Merit: 250
Sometimes man, just sometimes.....
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July 20, 2013, 10:27:51 PM |
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clocks werent too high. like 1100/1350... Temp varies from 60-78c.... damn it man...
I'm going to go out on a limb and say you do NOT have powered risers. An expensive mistake. No...Never really knew about the risers till too late, and now wtf is a powered riser? please explain? :-) If you are not using the pci-e x16 slots on your motherboard, and are using the pci-e x1 slots and running your cards off risers, there are two different types, powered, and non-powered. This is how you are able to see people say they are running 5 cards off one board, they are using risers. The biggest difference is that powered risers give more power to the bus of the cards, the powered risers have an additional molex connector attached. This is important in ltc mining as the power to overclock your vram on your cards for ltc mining comes from the bus. While btc power comes from the pci-e power connectors from the psu since thats what is powering the gpu overclock, thus you dont need powered risers to run them. |
Squiggly letters, written really fast, with a couple of dots for good measure.
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derr777
Member
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Activity: 87
Merit: 10
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July 21, 2013, 12:27:22 PM |
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Guys, this very likely has nothing to do with powered risers, nor LTC mining (although LTC mining may make it more likely.)
I've had the exact same thing happen with a Visiontek 7970 that had been only BTC mining on a x16 PCIe slot for about a year. Machine powered off. When I found it and turned it back on, There was a spark from inside. (I havent opened the reference case and cannot see any burn damage like in these pictures, but I'm sure it exists inside there somewhere.)
I attribute it to the VRMs running far too hot in the 7970 reference design. I tried to keep mine in the 90s, but it often went into the 100s with a fairly good overclock. Mind you, it did run 24/7 since about mid 2012.
Anyway, am about to test Visiontek warranty service.. will see how it goes, but I, like you, do attribute this to VRM temps. 7950s don't have this problem.. their VRMs are often cooler than the GPU itself. Reference 7970s often really do have issues with VRM temps..
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donations; BTC: 1KN24ZhL3PW1Rq5f48PAaEdyv4iKHdUXnr
LTC: LTyKRd9dCtKDAxUo41k2ZShuMfzkzhxc2V
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crazyates
Legendary
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Activity: 952
Merit: 1000
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July 21, 2013, 06:29:58 PM |
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I attribute it to the VRMs running far too hot in the 7970 reference design. I tried to keep mine in the 90s, but it often went into the 100s with a fairly good overclock. Mind you, it did run 24/7 since about mid 2012.
I tried saying this up above, but they didn't listen. :/ |
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HellDiverUK
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July 21, 2013, 06:51:22 PM |
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You can add extra heat sinks to the metal plate on the back of the card that holds the VRM heat sink on. I've two of those 7950 Gigabytes, and I added some of the cheap eBay stick-on RAM chip heat sinks. Seemed to help a bit.
I've also a 140mm fan running on the side panel of the case, blowing straight over the cards.
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crazyates
Legendary
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Activity: 952
Merit: 1000
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July 21, 2013, 10:22:54 PM |
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You can add extra heat sinks to the metal plate on the back of the card that holds the VRM heat sink on. I've two of those 7950 Gigabytes, and I added some of the cheap eBay stick-on RAM chip heat sinks. Seemed to help a bit.
I've also a 140mm fan running on the side panel of the case, blowing straight over the cards.
I ended up doing something similar almost a year ago. |
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Zanatos666
Sr. Member
Offline
Activity: 280
Merit: 250
Sometimes man, just sometimes.....
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July 21, 2013, 11:40:09 PM |
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Well I personally have never mined LTC, and have always down-clocked my Gigabyte cards memory so I guess I never have had an issue. But you are right, from a design stand point, they are very flawed. I was merely giving him some info that may benefit him in the future.
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Squiggly letters, written really fast, with a couple of dots for good measure.
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pr0d1gy (OP)
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July 22, 2013, 03:48:07 AM |
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clocks werent too high. like 1100/1350... Temp varies from 60-78c.... damn it man...
I'm going to go out on a limb and say you do NOT have powered risers. An expensive mistake. No...Never really knew about the risers till too late, and now wtf is a powered riser? please explain? :-) If you are not using the pci-e x16 slots on your motherboard, and are using the pci-e x1 slots and running your cards off risers, there are two different types, powered, and non-powered. This is how you are able to see people say they are running 5 cards off one board, they are using risers. The biggest difference is that powered risers give more power to the bus of the cards, the powered risers have an additional molex connector attached. This is important in ltc mining as the power to overclock your vram on your cards for ltc mining comes from the bus. While btc power comes from the pci-e power connectors from the psu since thats what is powering the gpu overclock, thus you dont need powered risers to run them. great. thanks! you wouldn't believe how i have my risers set up... smh.. im just glad it works as is. lol. |
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