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post #2001 of 3582
Quote:
Originally Posted by EasyC View Post
Hi all,

Just have a query.

I'm running at 950mhz core +81 mV in Afterburner. I used Heaven and Crysis benchmarks to test for stability and artifacts, which ran fine and didn't show any graphical abnormalities. I thought I might try OCCT just to test for errors, which it did indeed show. I had to increase the core voltage slider to +125 mV for OCCT to not show errors.

So although I understand OCCT stresses the card beyond realistic usage, I'm just wondering should I still stick with +81 mV or just run it at +125 mV?
Up to you honestly. If you don't get artifacting in any gaming sessions at +81mV, then you're good there. If you do, then you obviously need to raise vcore.

I never use OCCT. If my overclock can pass 30-45 minutes of Crysis Warhead benching without artifacts, I'm good. That's the ONLY game that I have that really shows artifacts on a close to stable card. I've passed Heaven bench stable, but Warhead was artifacting like crazy.
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post #2002 of 3582
Quote:
Originally Posted by qwwwizx View Post
Maybe I am the only one here, but when I install or upgrading Nvidia drivers I sometimes returns to low results in 3dmark 11. I can easily identify when its right or wrong just by using MSI AB graphs. I took screenshots of the GPU usage after running 3dmark 11, when it was wrong and another when I got it to work. Others of you, who get low results (less than P8500 with OC), should try to check out the same.

Driver 285.38
CPU: 4.8GHz, 48x100
MEM: 2133 (8-10-8-24 1T)
GPU: 1000 MHz
GPU MEM: 2050 MHz

The difference between the right and wrong is about P200 points.

Something is wrong: ~ P83xx



Now its right: ~ P85xx


But why??? for me it recover when I completely remove the driver, and install it on my primary GFX bios. After that I just reboot my computer and shift to secondary bios and let it install again. First then I get the GPU to work 100% all through the test as in the second screenshot.

What can be wrong, and do other here experience the same?
Oh wow yes, I get this too. The GPU usage stutters past the 80% mark on mine ALL The time. I'd rather obviously have it stay at 100% for benchmarks.

I have a MSI lightning, how does one go about messing with the BIOS like you mentioned?
post #2003 of 3582
You've got a switch on the top of side of your card towards the rear I/O. Unless your card is identified by 580 CBB FIX in MSI AB and has default clocks of 772Mhz instead of 832Mhz, but if I understand what he's suggesting you would remove the driver from your primary BIOS (what you are running right now) then install it again, then **** down and flip the cards BIOS switch to the other position install the drivers on that BIOS, then go back to using the first BIOS. But I don't see that doing anything, I would imagine he got his result just from uninstalling and reinstalling the driver on the first BIOS, I have a had time imagining that the drivers you install to your computer for a BIOS that is unused could affect the card.
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post #2004 of 3582
I see, thanks. What happens if you flip the switch with the PC powered up? Bad things?

Anyway, maybe whats going on is that different BIOS' have different means of power throttling? Because honestly I do notice what the previous poster mentioned - that the GPU doesn't stick at 100% during benchmarks. I have disabled power throttling through GPU-Z, maybe the card BIOS overrides that or something?

Because I see the exact same behaviour in AB. Where the GPU usage graph should be a straight line at 100%, but on mine it stutters between 85 and 97, looks just like his graph. I notice it in games as well, usually it "stutters" between 85-95% for power throttling reasons i'm assuming.

Does it not happen to you?

I have another PC with a 6970 crossfire setup and during benchmark programs - when I have power throttling disabled the GPU usage "sticks" at 100%. But on my GTX 580 using 285 beta drivers it stutters. Weird.

edit: Also, how does eveyrone format their system configuration signatures like that? I've read most of the stickies and don't see mention of it anywhere
Edited by xoleras - 10/14/11 at 9:00am
post #2005 of 3582
Fill in your system specs here.

I'm not sure what would happen if you flipped the BIOS switch while the machine was on and I see no reason to find out. I could imagine it possibly corrupting a BIOS but at the very least you would have to shut the machine down because the card would stop functioning.

The 500 series does not throttle in benchmarks. What you are thinking of is overcurrent protection (OCP) which only throttles the clocks (not the usage) in programs that Nvidia has called "power viruses" like Furmark, OCCT GPU, Kombuster etc. and the clocks lowering is not even shown in any software monitoring programs.
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post #2006 of 3582
Quote:
Originally Posted by xoleras View Post
Oh wow yes, I get this too. The GPU usage stutters past the 80% mark on mine ALL The time. I'd rather obviously have it stay at 100% for benchmarks.

I have a MSI lightning, how does one go about messing with the BIOS like you mentioned?
The reason I posted this, is that I get these results after installing new drivers, and to show how people can identify the problem. I get the low results on a plain new Windows installations where only the latest drivers has even seen the harddisk. I can easily see when its wrong by looking at the graphs in MSI AB, so no need to run full benchmark. I uninstall driver, install again some times, shift bios from primary to secondary..

This is the only working trick I know, and it have worked for me 3 times now, is installing drivers with primary/default bios active, then shift to secondary bios and let windows auto-install the driver. Very weird and unpredictable. After that BOOOM it rocks and it will stick until next nvidia driver update. Why... I have no clue. I hoped some of you could explain it.

You can see it in 3dmark 11, games like BF3 etc. When it works, it sticks to 100% if you have vsync off. No 96%-99% on load, it sticks to clean 100% at load.

As long as you card behave like this, the poor results thing, you wont be making any serious records. Highest single GTX 580 I did was P8884 like that, and fixed I pushed it to P9092 using the same clocks.

PS. Dont shift bios when machine is on/plugged. Shut it off, unplug power cable first, then shift bios, turn on etc.
Edited by qwwwizx - 10/14/11 at 2:21pm
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post #2007 of 3582
When you switch and install drivers on the second BIOS you let windows install old drivers or you install the latest drivers manually? Seems like you said it differently the first time then now. Like I said I don't see how drivers for a BIOS that isn't being used could affect anything but isn't he point to have the same driver on both BIOSs?
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post #2008 of 3582
Quote:
Originally Posted by pioneerisloud View Post
Up to you honestly. If you don't get artifacting in any gaming sessions at +81mV, then you're good there. If you do, then you obviously need to raise vcore.

I never use OCCT. If my overclock can pass 30-45 minutes of Crysis Warhead benching without artifacts, I'm good. That's the ONLY game that I have that really shows artifacts on a close to stable card. I've passed Heaven bench stable, but Warhead was artifacting like crazy.
Cool, thanks for the info pioneer
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post #2009 of 3582
Quote:
Originally Posted by qwwwizx View Post
The reason I posted this, is that I get these results after installing new drivers, and to show how people can identify the problem. I get the low results on a plain new Windows installations where only the latest drivers has even seen the harddisk. I can easily see when its wrong by looking at the graphs in MSI AB, so no need to run full benchmark. I uninstall driver, install again some times, shift bios from primary to secondary..

This is the only working trick I know, and it have worked for me 3 times now, is installing drivers with primary/default bios active, then shift to secondary bios and let windows auto-install the driver. Very weird and unpredictable. After that BOOOM it rocks and it will stick until next nvidia driver update. Why... I have no clue. I hoped some of you could explain it.

You can see it in 3dmark 11, games like BF3 etc. When it works, it sticks to 100% if you have vsync off. No 96%-99% on load, it sticks to clean 100% at load.

As long as you card behave like this, the poor results thing, you wont be making any serious records. Highest single GTX 580 I did was P8884 like that, and fixed I pushed it to P9092 using the same clocks.

PS. Dont shift bios when machine is on/plugged. Shut it off, unplug power cable first, then shift bios, turn on etc.

I'm glad you posted this info, I was always wondering about why the GPU didn't "stick" to 100% usage during games or benchmarks. Apparently a lot of people have this problem, i've seen it mentioned elsewhere, i'm surprised more in this thread aren't speaking up about it.

Something wonky in nvidia drivers for sure does this, none of my ATI 6970's do it -- during games they stick to 100% usage. My nvidia cards stutter between 80-95% gpu usage.
post #2010 of 3582
How many of you guys run 266.58's still? And who all has hard lock up issues with DiRT3?

Curious because I'm starting to wonder if its a driver issue. I don't feel like swapping drivers though if it happens with other drivers too.
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