Problems with 2x GTX 570

Message boards : Number crunching : Problems with 2x GTX 570

Author	Message
Mad Matt Send message Joined: 29 Aug 09 Posts: 28 Credit: 101,584,171 RAC: 0 Level Scientific publications	Message 22090 - Posted: 13 Sep 2011 \| 18:53:59 UTC Last modified: 13 Sep 2011 \| 18:58:57 UTC
	I am having constant problems with this host: http://www.gpugrid.net/show_host_detail.php?hostid=107176 Device 0 will error out all WUs, device 1 does not seem to have any problems. Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz Z68 board, internal graphics deactivated. Microsoft Windows XP Professional x64 Edition, Service Pack 2, (05.02.3790.00) [2] NVIDIA GeForce GTX 570 (1279MB) driver: 26658. Stock clocks. No SLI bridge. Brand: 2x Gigabyte GeForce GTX 570 OC (GV-N570OC-13I). The crashing device interestingly is a newer version without voltage control, but using higher voltages by default according to GPU-Z. Any ideas? ____________
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Retvari Zoltan Send message Joined: 20 Jan 09 Posts: 2343 Credit: 16,241,765,968 RAC: 3,389,627 Level Scientific publications	Message 22092 - Posted: 13 Sep 2011 \| 19:19:37 UTC - in response to Message 22090. Last modified: 13 Sep 2011 \| 19:30:37 UTC
	What PSU are you using in this host? (a good 800W (preferably 80+ Gold) is the minimum for your configuration) A more recent driver (275.33 or 280.26) for the GPUs would be nice to have. What are the running temps of the cards? Over 90°C is dangerous, but the lower the better. Maybe you have to increase the fan speed of both GPUs with MSI Afterburner (it works with every manufacturer's cards) Maybe you should: - disable any screensaver. - swap the cards, to see if the card or the slot is the root of the problem. - downclock the failing GPU. - install the latest chipset driver from intel.
	ID: 22092 \| Rating: 0 \| rate: / Reply Quote

Mad Matt Send message Joined: 29 Aug 09 Posts: 28 Credit: 101,584,171 RAC: 0 Level Scientific publications	Message 22093 - Posted: 13 Sep 2011 \| 19:38:02 UTC Last modified: 13 Sep 2011 \| 19:38:53 UTC
	The PSU might be a bit short, but it does handle more power hungry apps like PG without problems. It is a Seasonic X-650W. Temps with PG have been 70°-80°C as peak on hottest days, using 900Mhz GPU clocks. So running GPUGRID on stock I did not even bother to check, something below 70°C. Currently running Einstein at 51°-62°C (900Mhz). I checked one 28x WHQL driver, no improvement with that problem. Intel chipset driver is 9.2.0.1026 ____________
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skgiven Volunteer moderator Volunteer tester Send message Joined: 23 Apr 09 Posts: 3968 Credit: 1,995,359,260 RAC: 0 Level Scientific publications	Message 22098 - Posted: 13 Sep 2011 \| 22:59:47 UTC - in response to Message 22093. Last modified: 13 Sep 2011 \| 23:09:03 UTC
	Hi Matt, Good suggestions below. Suggest you use a tool to control fan speed; 60-65 would be about right for ref on those GPU's, but closed case and not great air throughput could be a problem. PG taxes the GPU in different ways so running those tasks would just tell you if you had a dud GPU or not. I would try downclocking the GDDR5 a notch to see if that helps; has worked in the past. I would also try the failing card in isolation just in case. GL
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Mad Matt Send message Joined: 29 Aug 09 Posts: 28 Credit: 101,584,171 RAC: 0 Level Scientific publications	Message 22102 - Posted: 14 Sep 2011 \| 9:13:32 UTC
	Cheers for the hints, guys. I will try setting fan speed and fiddling with RAM clocks around 1500 MHz first. It's a Silverstone Fortress case, so airflow hopefully should not be the problem. ____________
	ID: 22102 \| Rating: 0 \| rate: / Reply Quote

Retvari Zoltan Send message Joined: 20 Jan 09 Posts: 2343 Credit: 16,241,765,968 RAC: 3,389,627 Level Scientific publications	Message 22104 - Posted: 14 Sep 2011 \| 12:21:55 UTC - in response to Message 22093.
	The PSU might be a bit short, but it does handle more power hungry apps like PG without problems. It is a Seasonic X-650W. While it is a top quality PSU, you are right about it is a bit short for two GTX 570s. It doesn't matter, that it's fine with PG. Even different GPUGrid task are using different amount of the GPU, resulting different power consumption. This can be as much as 50-80W in a dual GPU system. You should check your system's overall power consumption while crunching GPUGrid (or with furmark while the GPUs are in SLI). If it's over 722W, your system is overloading your PSU. Even if it's under 722W, it is recommended to load a PSU at longest 75-80% of it's maximum wattage in the long term. You should also consider that the efficiency of a PSU is best around 50% load.
	ID: 22104 \| Rating: 0 \| rate: / Reply Quote

Mad Matt Send message Joined: 29 Aug 09 Posts: 28 Credit: 101,584,171 RAC: 0 Level Scientific publications	Message 22109 - Posted: 14 Sep 2011 \| 18:43:27 UTC
	I am currently waiting for the Platinum series to start consecutive upgrades of most PSUs, so it should get an X-750W. Last time load measured was when running PG around 75% or so. It seems fan/RAM settings did the trick. :) For some reason I ignored device 0 sees about 10°C higher temps, most likely because the Gigabyte cooler does exhaust some hot air into the case while this case favours all-exhaust devices. Cooler set manually to 62%, so it keeps the card in a better range now, not sure if memory downclocking still is needed. If that's running stable, I will try to find some better clocks though. :P Thanks for the tips! ____________
	ID: 22109 \| Rating: 0 \| rate: / Reply Quote

Mad Matt Send message Joined: 29 Aug 09 Posts: 28 Credit: 101,584,171 RAC: 0 Level Scientific publications	Message 22114 - Posted: 15 Sep 2011 \| 13:45:33 UTC - in response to Message 22109.
	PS, latest check of power draw: Running 2x GPUGRID ~447W average. 450W peak. ~68% PSU load. No trashed WU since adjusting fan and RAM. :) Cheers. ____________
	ID: 22114 \| Rating: 0 \| rate: / Reply Quote

JLConawayII Send message Joined: 31 May 10 Posts: 48 Credit: 28,893,779 RAC: 0 Level Scientific publications	Message 23069 - Posted: 22 Jan 2012 \| 1:39:04 UTC
	Wow, that poor little PSU. It's a good thing it's a Seasonic, or it probably would have already burst into flames and exploded.
	ID: 23069 \| Rating: 0 \| rate: / Reply Quote

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Message boards : Number crunching : Problems with 2x GTX 570

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