Quote:
Originally Posted by Arizonian 
Well first let me comment on saying that the 900 MHz on the 580 is a good 24/7 OC stable.
Secondly, you must have a poor over clocker because I ran that 900 MHz OC with stock 1.0880v for 8 months easy and before that 875 Mhz for 5 months approximately. It's going into a second rig and will stay at 900 Mhz stock voltage.
I'm a bit surprised though that you didn't get 950 Mhz on the higher benching over clock with that much voltage. I was able to obtain and many others if you look at this club thread home page that mark with 1.1100v. I'm surprised your MSI TFII isn't pulling those over clocks running cooler than the vanilla flavor I have.
Back to the main point - your 900 Mhz stable 24/7 is a good OC for that card. Set it and forget it and get to gaming. Enjoy.
Quote:
Originally Posted by ImprezzionÂ
Stock clocks for the DCII are 782-2004Mhz but k.
About the GPU Voltage your absolutely right. This has to be a modded BIOS. I was very suprized to see the limit of 1.213v in GPU Tweak / MSI AB. According to GPU-Z the BIOS is still a ASUS one, but I have no idea if it's something like a modded original one or something totally different.
Temperature-wise it can easily handle the 1.213v but I don't know if it's safe to run 24/7 due to the VRMs.
On 1.213v under BF3 it did about 65c with 65-70% fanspeed and in Unigine Heaven it peaked at 71c with 72% fanspeed.
Those fanspeeds are insanely high compared to the stock DCII speeds but it works fine to cool it
I have to admit, The voltage doesn't scale at all so I probably won't run it if I can't "fix" the crappy OC.
900Mhz 'stable' on 1.15v in BF3 / 3dmark11 / heaven.
Couldn't get 932Mhz to run any longer then 20-25 minutes in BF3 even with the full 1.213v applied.
Could indeed be something like BIOS or power supply.
Doubt it's the card cause not running 932Mhz even on 1.213v is like, extremely bad / low imo compared to the results I read online. Especially for a DCII.
Oh and, before ya guys start about my PSU, it's plenty and it's running fine. It's the trusty XFX 650w XXX Edition.
Might be a different design to the Pro version, but it's still a high-end seasonic unit which runs even my dual HD6950's perfectly for hours on end. Even with heavy benching.
Stock clocks for the DCII are 782-2004Mhz but k.
About the GPU Voltage your absolutely right. This has to be a modded BIOS. I was very suprized to see the limit of 1.213v in GPU Tweak / MSI AB. According to GPU-Z the BIOS is still a ASUS one, but I have no idea if it's something like a modded original one or something totally different.
Temperature-wise it can easily handle the 1.213v but I don't know if it's safe to run 24/7 due to the VRMs.
On 1.213v under BF3 it did about 65c with 65-70% fanspeed and in Unigine Heaven it peaked at 71c with 72% fanspeed.
Those fanspeeds are insanely high compared to the stock DCII speeds but it works fine to cool it
I have to admit, The voltage doesn't scale at all so I probably won't run it if I can't "fix" the crappy OC.
900Mhz 'stable' on 1.15v in BF3 / 3dmark11 / heaven.
Couldn't get 932Mhz to run any longer then 20-25 minutes in BF3 even with the full 1.213v applied.
Could indeed be something like BIOS or power supply.
Doubt it's the card cause not running 932Mhz even on 1.213v is like, extremely bad / low imo compared to the results I read online. Especially for a DCII.
Oh and, before ya guys start about my PSU, it's plenty and it's running fine. It's the trusty XFX 650w XXX Edition.
Might be a different design to the Pro version, but it's still a high-end seasonic unit which runs even my dual HD6950's perfectly for hours on end. Even with heavy benching.
Well first let me comment on saying that the 900 MHz on the 580 is a good 24/7 OC stable.
Secondly, you must have a poor over clocker because I ran that 900 MHz OC with stock 1.0880v for 8 months easy and before that 875 Mhz for 5 months approximately. It's going into a second rig and will stay at 900 Mhz stock voltage.
I'm a bit surprised though that you didn't get 950 Mhz on the higher benching over clock with that much voltage. I was able to obtain and many others if you look at this club thread home page that mark with 1.1100v. I'm surprised your MSI TFII isn't pulling those over clocks running cooler than the vanilla flavor I have.
Back to the main point - your 900 Mhz stable 24/7 is a good OC for that card. Set it and forget it and get to gaming. Enjoy.
That said 900 at stock volts is excellent. You have a pretty good card. I wouldn't use that as a baseline for 580's because thats above average. Just my .02
550D
(15 items) |
|
550D
(15 items) |
Nothing more interesting then bolting a PC apart on a saturday morning! (And that aint a joke)
