SM411
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May 27, 2013, 08:33:28 AM |
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Im mining bitcoins. I lowered the temp to 85 by increasing fan speed. Can increase more, but fan is then running >80% and I guess that will ruin the fan over time. http://gpuz.techpowerup.com/13/05/27/c3c.png
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marvel212
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May 27, 2013, 11:41:04 AM |
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Does anyone know why mining LTC GPU temps are much higher than mining BTC?
For instance my temps stay 80'ish Celcius when mining BTC. When mining LTC my temps rise about 5C higher.
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induktor
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May 27, 2013, 01:22:49 PM |
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Does anyone know why mining LTC GPU temps are much higher than mining BTC?
For instance my temps stay 80'ish Celcius when mining BTC. When mining LTC my temps rise about 5C higher.
5 C Higher in the GPU, the VRMs are easy 10 to 15C above the GPU temperature, be very careful in LTC mining, specially if you OC the cards. That is because LTC uses A LOT the memory and the internal bandwidth between memory and GPU engine, while BTC only uses the GPU, not memory. also you will have 20 to 30% more power consumption in LTC than in BTC depending on settings. SM411: check your VRM temperature, it's 85C, a little high, try to keep that one not more than 80C for safety, it is easier to replace the fan than blow the VRM and have to send the entire card to RMA ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) so, if I have to choose between FAN life and CARD life, I will choose CARD life ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) , you can even remove the plastic cover, both fans and buy 2 artctic cooling F8 CO fans and screw them to the heatsink directly ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) check the 80mm 4wire PWM fan: http://www.arctic.ac/en/p/cooling/case-fans/556/arctic-f-pwm-co-.htmlI ordered a couple of them because one of my older cards have fan problems, I already fixed them but it's a short term solution, will have to replace them soon, two of these will do ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
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BTC addr: 1vTGnFgaM2WJjswwmbj6N2AQBWcHfimSc
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fbassett
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May 27, 2013, 09:06:24 PM |
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Sappire 5870, running at 900 memory at 300. Temperature is 76°.
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toni_iommi
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May 28, 2013, 04:51:45 AM |
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two 7850's bottom card 61 top card 68
stock fan settings. side of case removed and stand alone room fan kind of blowing into the open case.
1250mhz over clock on bottom ram at 600 mhz stable 350Mhash
1100mhz oc on top card ram at 1200 mhz just barely stable 305Mhash This card has my monitor on it and video is constantly crapping out with display blocks and stuff just messed up. Kind of like someone is playing an old atari asteroids game in the background.
both sapphire dual fan 2gb cards
Also a 5770 that ran around 85. OC to about 940Mhz. 225 mhash. fan at 100%. WRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR. Ran for six months straight like this stable no problems. Pulled the plastic cover and removed the hairball jamming the heatsink and redid the thermal paste and back to 70 deg. Just saying that a little maintenance can go a long way to cooler temperatures. This has a single turbine style fan and is LOUD.
Using a combination of Trixx for the sapphire cards and AB for the 5770. I like how AB put a little temp widget in my taskbar.
That's all
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induktor
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 28, 2013, 04:58:40 AM |
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This card has my monitor on it and video is constantly crapping out with display blocks and stuff just messed up. Kind of like someone is playing an old atari asteroids game in the background.
hehehe yeah!, same here with my 7850 when I was in windows, If I lower the ram below 700 Mhz I start to see all kind of crappy blocky shit on the screen heehe. that didn't happens in linux thought, also in linux , I get an extra 25MH per card at same settings and speeds.
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BTC addr: 1vTGnFgaM2WJjswwmbj6N2AQBWcHfimSc
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CoolIT
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May 28, 2013, 07:13:26 PM Last edit: May 28, 2013, 07:28:03 PM by CoolIT |
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So I guess I am killing my poor 6870's
first is at 965Mhz slight voltage underclocke to 1.104
95 98 101
The second is at 945 same voltage
95 96 94
Running 24/7 flawlessly stable even at those temps.
Ill take the advice and down clock them till I get the chance to move it to the AC Cooled server room.
edit dropped to 850Mhz, voltage at 1.000
82 84 88
and
85 83 81
Stupid blower card fan higher then 48% get's loud. past 60% is brutal.
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pand70
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May 28, 2013, 07:47:31 PM |
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Do you guys think that it is better to sacrifice a few temp degrees to lower the fan speed?
I dont know why but i have the impression that my fan is much more vulnerable than my card.
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crazyates
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May 28, 2013, 07:54:00 PM |
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Do you guys think that it is better to sacrifice a few temp degrees to lower the fan speed?
I dont know why but i have the impression that my fan is much more vulnerable than my card.
Why would I put my my $400 GPU at risk of overheating, just to save a $5 fan from burning out quicker? Crank those fans for as long as they'll go, and you can always replace them later. It's a lot more expensive to replace a GPU.
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grue
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May 28, 2013, 08:09:55 PM |
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PSA: if you're mining bitcoins, you can lower your temps significantly by lowering your memory clocks. Your mining speed will not be affected. In some cases, you will actually gain speed.
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cdog
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May 28, 2013, 09:00:15 PM |
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Mostly 80s and 90s. I have a couple 6950s that chill out around 102 and dont seem to mind.
They might be worth $30 each 30 months from now so whatever...
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cdog
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 28, 2013, 09:04:33 PM |
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Do you guys think that it is better to sacrifice a few temp degrees to lower the fan speed?
I dont know why but i have the impression that my fan is much more vulnerable than my card.
When the stock fan dies you just remove it and put a 80 or 120mm case fan on it with zipties lol
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ISAWHIM
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May 28, 2013, 09:24:22 PM |
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That poll needs tighter values...
Between 70c-90c = 158F-194F
30C is THE-UNICORN 35C is THE-GUY-PAYED-TO-GROOM-THE-UNICORN 40C is THE-GUY-WHO-RIDES-A-UNICORN-TO-WORK 45C is A-FREAKING-LIAR 50C is DAMN-NEAR-A-FANTASY 55C is PERFECT 60C is GREAT 65C is IDEAL *** (My temps) 70C is NORMAL *** (My temps) 75C is OK 80C is WARM 85C is HOT 90C is NEAR-LIMIT 95C is AT-LIMIT 100C is SOON-TO-BE-DEAD 105C is DEAD
My temps, as reported by the GPU... (In order) 75, 75, 74, 73, 69, 69, 69, 69, 65, 63, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 60
Actual temp of all of them... (Majority of the day) These match the above cards ordered. 67, 67, 67, 66, 67, 67, 67, 62, 66, 66, 67, 67, 66, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 66
Ambient room temp being 29c (86F) {outside air, I live in Florida, it is 25c(77F) at night, and humid.} Nights the cards run about 2c-3c cooler.
This is "running for days" temps. The cards do NOT report the actual temperature. They are "ballpark" at best. They are not calibrated or high-quality temperature sensors. The most important thing you get from them, is "increase over ambient", once you know the "ambient" temperature of the running card. The higher the temp, the more inaccurate the sensor, but it is consistently inaccurate.
I wish someone made a temp-program that let you "calibrate" the output of the sensors. (Even if it only shows correctly in that program).
I write the "ambient" and "running" temp on each card, and give them an ID, to tell when they are drifting into dangerous grounds. (Along with a cheat-sheet, at my keyboard.)
P.S. These are all 7970 reference-design (HIS series {the hot ones}), and PowerColor (The cheap 2-fan models {the cooler ones})
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pand70
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 28, 2013, 09:57:13 PM |
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When the stock fan dies you just remove it and put a 80 or 120mm case fan on it with zipties lol
Haha zipties ftw ![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
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induktor
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 30, 2013, 12:15:57 AM |
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When the stock fan dies you just remove it and put a 80 or 120mm case fan on it with zipties lol
Haha zipties ftw ![Grin](https://bitcointalk.org/Smileys/default/grin.gif) One of my fans start to make noises, I fixed it but, I started thinking... why not replace the original fans and store them, so we can sell the card later on when we no longer use it! and put two Arctic cooling F PWM F8 or F9 CO fans screwed to the heatsink directly? these are designed for 24/7 operation. I will try this in a couple of days and post pics, the fans are 4 wire, PWM with speed sensor, and, removing the plastic cover, will not be too difficult to bolt them to the heat-sink at all, I will use F8 for 78xx cards and F9 for 79xx cards (F9 are 9,2 mm, more CFM ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) )
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BTC addr: 1vTGnFgaM2WJjswwmbj6N2AQBWcHfimSc
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laris2
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May 30, 2013, 10:01:18 AM |
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When mining litecoins my 3 stacked cards on gpu run upto 76c with outside temperature reaching 30. With bitcoin downclocked its usually 69, but fans are on really low settings then.
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TEST
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wblabla4
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May 30, 2013, 05:32:42 PM |
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cgminer version 3.1.0 - Started: [2013-05-28 07:51:32] -------------------------------------------------------------------------------- (5s):283.8M (avg):292.6Mh/s | A:14740 R:50 HW:0 U:4.0/m WU:4.1/m ST: 2 SS: 0 NB: 423 LW: 27951 GF: 10 RF: 1 Connected to stratum.bitcoin.cz diff 1 with stratum as user XXXXXXXXXX Block: 00dee6b00eaca825... Diff:12.2M Started: [20:23:35] Best share: 40.7K -------------------------------------------------------------------------------- [P]ool management [G]PU management [S ]ettings [D]isplay options [Q]uit GPU 0: 74.0C 74% | 135.0M/144.6Mh/s | A:7274 R:28 HW:0 U:2.00/m I: 5 GPU 1: 66.0C 66% | 146.4M/148.0Mh/s | A:7466 R:22 HW:0 U:2.05/m I: 5 -------------------------------------------------------------------------------- [2013-05-30 20:29:53] Accepted 0546af3d Diff 48/1 GPU 0 [2013-05-30 20:30:13] Accepted be41b1c1 Diff 1/1 GPU 0 [2013-05-30 20:30:16] Accepted 825685f3 Diff 1/1 GPU 1 [2013-05-30 20:30:19] Accepted 6deb3d52 Diff 2/1 GPU 0 [2013-05-30 20:30:23] Accepted cfbeae14 Diff 1/1 GPU 0 [2013-05-30 20:31:00] Accepted 9e9e05d4 Diff 1/1 GPU 0 [2013-05-30 20:31:00] Accepted 7409e3da Diff 2/1 GPU 1 [2013-05-30 20:31:20] Accepted 336cf4f6 Diff 4/1 GPU 1 [2013-05-30 20:31:21] Accepted e2c83b28 Diff 1/1 GPU 1 [2013-05-30 20:31:41] Accepted 42f385c6 Diff 3/1 GPU 1 [2013-05-30 20:31:43] Accepted e2e340f3 Diff 1/1 GPU 1 [2013-05-30 20:32:11] Accepted f63c0558 Diff 1/1 GPU 1 Running non-stop for 2 days ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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tyler26
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May 31, 2013, 09:52:12 PM |
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My rig is 3x 7950s, the temps are usually ~84 and then the one in the middle is like 90 because it receives less air flow.
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Crunchysocks
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May 31, 2013, 10:46:03 PM |
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OCL 0: 41.5C 960RPM | 326.5/311.6/305.0Mh/s | A:16746 R:261 HW:0 U: 4.17/m OCL 1: 44.0C 960RPM | 329.2/311.7/304.4Mh/s | A:16803 R:230 HW:0 U: 4.18/m OCL 2: 51.0C 960RPM | 330.2/311.3/306.6Mh/s | A:16900 R:263 HW:0 U: 4.21/m OCL 3: 52.5C 960RPM | 329.3/311.3/306.8Mh/s | A:16938 R:279 HW:0 U: 4.21/m OCL 4: 45.5C 960RPM | 328.8/311.3/308.7Mh/s | A:16954 R:255 HW:0 U: 4.22/m OCL 5: 50.0C 960RPM | 328.2/311.3/303.7Mh/s | A:16750 R:215 HW:0 U: 4.17/m --------------------------------------------------------------------------------
finally got my cards semi-stable, need to add the 4th, then i'll try to maybe OC a bit
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induktor
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
June 01, 2013, 01:51:28 PM |
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OCL 0: 41.5C 960RPM | 326.5/311.6/305.0Mh/s | A:16746 R:261 HW:0 U: 4.17/m OCL 1: 44.0C 960RPM | 329.2/311.7/304.4Mh/s | A:16803 R:230 HW:0 U: 4.18/m OCL 2: 51.0C 960RPM | 330.2/311.3/306.6Mh/s | A:16900 R:263 HW:0 U: 4.21/m OCL 3: 52.5C 960RPM | 329.3/311.3/306.8Mh/s | A:16938 R:279 HW:0 U: 4.21/m OCL 4: 45.5C 960RPM | 328.8/311.3/308.7Mh/s | A:16954 R:255 HW:0 U: 4.22/m OCL 5: 50.0C 960RPM | 328.2/311.3/303.7Mh/s | A:16750 R:215 HW:0 U: 4.17/m --------------------------------------------------------------------------------
finally got my cards semi-stable, need to add the 4th, then i'll try to maybe OC a bit
OCL ![Huh](https://bitcointalk.org/Smileys/default/huh.gif) what kind of hardware is that? ![Shocked](https://bitcointalk.org/Smileys/default/shocked.gif)
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BTC addr: 1vTGnFgaM2WJjswwmbj6N2AQBWcHfimSc
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