Message boards : Graphics cards (GPUs) : GTX 590 Overclocking w/o Voltage Tweaking...
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(I orginally had this posted in the Number Crunching message board and thought this board would benefit from it as well...) | |
ID: 22126 | Rating: 0 | rate: / Reply Quote | |
FYI... What are your GTX590's stock voltages? I'm using at 700MHz my GTX590 since the beginning, on 913 and 925mV. (memory at stock) Yesterday - inspired by your post - I've raised the GPU's clock to 725MHz, and I'm planning to go further... I've installed a 12cm 2500rpm cooler fan on top of my GTX590, blowing cool air directly to the card's cooler through some air duct made of cardboard paper by my gf. My GPU's temperatures as low as 71-74C. Since the second release of GTX590's driver, it's not allowed to rise significantly the voltages of the GPU, so I'm hoping it won't hurt the card. | |
ID: 22128 | Rating: 0 | rate: / Reply Quote | |
I took a deep breath, and I've raised both GPUs' clock on my GTX590 to 750MHz. | |
ID: 22130 | Rating: 0 | rate: / Reply Quote | |
The other (on 925mV) however, is running fine on 750MHz for more than an hour now. Unfortunately it's run to an error after 3 hours, so I took it back to 740MHz. | |
ID: 22131 | Rating: 0 | rate: / Reply Quote | |
I don't understand, why are the maximum voltages different on the same card? 2 Different GPU's, each with different stock voltages, set in factory. | |
ID: 22133 | Rating: 0 | rate: / Reply Quote | |
Hmmm... I'll have to give those extra MHz a try on my liquid-cooled and air-cooled GTX 590 setups and see if they hold. | |
ID: 22134 | Rating: 0 | rate: / Reply Quote | |
I don't understand, why are the maximum voltages different on the same card? The factory settings are 900mV for both GPUs. | |
ID: 22135 | Rating: 0 | rate: / Reply Quote | |
913mV and 925mV are close, but not the same. Anyway they are different chips, and all chips are different. Both are well below my 1.025V AMP ed GTX470 (FOC), and my 2nd ed ASUS (sub 1V), so I would suggest you have a bit of scope to play with, if doable and if power usage and cooling are not obstacles. Try reducing the GDDR first though. | |
ID: 22138 | Rating: 0 | rate: / Reply Quote | |
... Try reducing the GDDR first though. I will do it later. I returned to 725MHz, and now I'm trying to make my i7-970 run steadily at 4.5GHz. I realized that I can gain some extra percent of GPU usage from overclocking not only the Core2s but the Core i7 too. Actually, My i7-970 were running at 4GHz before, but there is so much combination of the four multipliers (CPU, RAM, QPI, and UnCore) and their corresponding voltages, that I didn't have time to play with them enough. Until now... It's interesting: my PC can crunch for hours, then I start browsing on some adobe flash enriched sites, and I start receiving error messages from different applications, and some blue screens too :) as a result, a couple of my GPUGrid tasks have failed. When future apps come out, you will have to test again as they may well use more juice, and don't forget to clean the GPU, periodically. I'm doing these things regularly. What are your PCB temps? My PCB is 51°C (could be that is there only one sensor on my MB?) CPU cores are 60-68°C (at 4.5GHz, core voltage: 1.475V) This PC has no case. | |
ID: 22139 | Rating: 0 | rate: / Reply Quote | |
The GPU PCB temps look OK; my FOC GTX470 PCB temp is 49deg C. Yeah, would only be one temp - one board. | |
ID: 22140 | Rating: 0 | rate: / Reply Quote | |
I'm aware these things, and I agree with you. I'm (leastways I was) a quite experienced overclocker. The weather turned cold here, so it's a good time to experiment with overclocking. I can boot up even at 4.6GHz, so that's why I thought I can make my PC run steadily at 4.5GHz. There is so much misinformation on the internet, and also in the BIOS about overclocking. There is a huge difference in overclocking Socket 1156 and Socket 1366 CPUs, and I have both... The GPU PCB temps look OK; my FOC GTX470 PCB temp is 49deg C. Yeah, would only be one temp - one board. I misunderstand you, because my GTX 590 and 580 tricked me. There is no PCB temperature reading on them. So I told you my motherboard's temperature. The GTX 590's metal back plate and the metal heat spreader is over 55°C (because I can't touch it for over 5 sec...) Both GPUs are 69°C right now on the 590. | |
ID: 22141 | Rating: 0 | rate: / Reply Quote | |
55 deg.C might be a bit on the hot side. GPUZ tells me what the PCB of the GPU is (usually 46 to 49), but it might not report it on GTX500 cards, or just the 590? | |
ID: 22142 | Rating: 0 | rate: / Reply Quote | |
I, too, was concerned with hot (unbearably hot!) GTX 590 fan-cooled GPU's (almost 100C full blast!!!) But, after a couple months of 24/7 at mid-90C temps, they seem to keep on performing. I also noticed that the fans are at 50% in the 80C's and don't hit 100% until the very high 90C's. You cannot cool them down any further when running them full blast. I have the case air-cooled with over 350 CFM air flow which keeps everything else in the system very cool, even with the hot air coming from the internal exhausts of the GTX 590's (I have two of them in one system at this time.) | |
ID: 22363 | Rating: 0 | rate: / Reply Quote | |
I, too, was concerned with hot (unbearably hot!) GTX 590 fan-cooled GPU's (almost 100C full blast!!!) But, after a couple months of 24/7 at mid-90C temps, they seem to keep on performing. Impressive systems! Regarding reliability: as a rule of thumb the mean time between failures is cut in half for every 10 K more. So running hot doesn't mean you're chips are suddenly going to die (not before some really temperatures), it's just that they're wearing out faster. What this means for your specific chip is hard to tell without taking it apart and examining it for years in an electron microscope. And if this matters to you or not is an entirely different question ;) MrS ____________ Scanning for our furry friends since Jan 2002 | |
ID: 22367 | Rating: 0 | rate: / Reply Quote | |
Thanks for that info! Thank goodness for lifetime warranties!!! ;o) | |
ID: 22395 | Rating: 0 | rate: / Reply Quote | |
I had to set my GTX 590's clock down to 715MHz, because since the last driver update (285.58) I got a couple of BSOD @725MHz. This very highly GPU utilizing (99%) NATHAN tasks turned the heat up to 80°C in my GTX 590 (@725MHz), so it is a good idea to take back a little from overclocking anyway. | |
ID: 22459 | Rating: 0 | rate: / Reply Quote | |
I had reverted back to the WHQL 275 drivers due to some rare unrecoverable "error while computing" anomalies on my 8x GPU system using either WHQLs 280 and 285. I'm not having such issues on my 4x GPU systems using the latest WHQL 285 drivers, even on those 90%+ GPU load WUs (fan- or liquid-cooled...) | |
ID: 22562 | Rating: 0 | rate: / Reply Quote | |
I've got the following NATHAN Long running times (with swan_sync=0 applied) on my main cruncher host: | |
ID: 22611 | Rating: 0 | rate: / Reply Quote | |
43% is far too great for it to be just PCIE contention/bandwidth (and I doubt that is an issue anyway). | |
ID: 22613 | Rating: 0 | rate: / Reply Quote | |
WirelessDude is using W7, which would account for at least 11% of the 14% drop. CPU difference might account for the other 3%. This is true with other type of wus, but the running times of a lot of NATHAN Long wus on WirelessDude's W7 hosts is in the 0-3% range of the running times (multiplied by the ratio of the clock rates) on my W-XP host. I think your 17% OC is too much. Try 10% and stock GDDR rates. Since then the I've tried 700MHz (15.3%) and 660MHz (8.7%). The throttling is still kicked in at these frequencies. (while I didn't lower the clock of the other GPU on my GTX 590). GDDR is at stock. | |
ID: 22619 | Rating: 0 | rate: / Reply Quote | |
I would drop the GDDR below stock, say by 10%. This should still make little difference to performance and might allow the GPU to run without downclocking. | |
ID: 22620 | Rating: 0 | rate: / Reply Quote | |
Message boards : Graphics cards (GPUs) : GTX 590 Overclocking w/o Voltage Tweaking...