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post #2191 of 7827
What can you run SLI in 3dMark11 at? I seem to have to drop around 20-30mhz when going from a 3dMark11 stable OC to Heaven.
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post #2192 of 7827
Hi doesn anyone know why i still running pcie2.0 with my lightning , gpu-z shows still running pcie 2.0 instead of 3.0 , i have enable force gen-3 but it didnt work and it was work good with my prior evga gtx680 , anybody got idea?? thanks
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post #2193 of 7827
Quote:
Originally Posted by teichu View Post

Hi doesn anyone know why i still running pcie2.0 with my lightning , gpu-z shows still running pcie 2.0 instead of 3.0 , i have enable force gen-3 but it didnt work and it was work good with my prior evga gtx680 , anybody got idea?? thanks

http://www.techpowerup.com/downloads/2148/NVIDIA_GeForce_Kepler_PCIe_3.0_mode-enabling_patch_for_Sandy_Bridge-E_systems.html

Go into your motherboard's bios and enable Gen 3 on the corresponding pci-E slot. Install the Gen3 patch, and then restart the PC. Simple as that. If it doesn't work after that, then I couldn't tell ya.
    
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post #2194 of 7827
Quote:
Originally Posted by dph314 View Post

What can you run SLI in 3dMark11 at? I seem to have to drop around 20-30mhz when going from a 3dMark11 stable OC to Heaven.

That's as good as I ever got, 1386. I got a better score when I did a fresh boot the next day, but the clocks were the same.

I might have been able to squeeze some more out of it, but Heaven seemed to always crash right at the last scene and 3DM11 would always crash at the next to the last test, the physics test. I just got tired of making an entire run, crash at the end, tweak, and re-do the whole mess. I was happy enough with the scores I got to let it go at that. Plenty of guys would probably be happy to get 1386 on one card, much less SLI.

I could probably drop my CPU OC down and up the GPU clocks and get a full run in 3DM11 at higher than 1386, but no way it'd pass Heaven like that. Plus my GPU memory flat won't OC past +475 on the slider, I could never run at 7K mem without radical polygon artifacts.

I'm back to running nice and stable at 4.5Ghz CPU/1300 GPU @+400 mem.
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post #2195 of 7827
Quote:
Originally Posted by GnarlyCharlie View Post

That's as good as I ever got, 1386. I got a better score when I did a fresh boot the next day, but the clocks were the same.
I might have been able to squeeze some more out of it, but Heaven seemed to always crash right at the last scene and 3DM11 would always crash at the next to the last test, the physics test. I just got tired of making an entire run, crash at the end, tweak, and re-do the whole mess. I was happy enough with the scores I got to let it go at that. Plenty of guys would probably be happy to get 1386 on one card, much less SLI.
I could probably drop my CPU OC down and up the GPU clocks and get a full run in 3DM11 at higher than 1386, but no way it'd pass Heaven like that. Plus my GPU memory flat won't OC past +475 on the slider, I could never run at 7K mem without radical polygon artifacts.
I'm back to running nice and stable at 4.5Ghz CPU/1300 GPU @+400 mem.

Yeah one card doing 1386 is awesome, let alone in SLI. You're lucky you got a good pair. I got one great one and one not-so-good one. That's ok though I guess. At least it let's me use only one card for more games rather than SLI all the time.

But yeah if you're crashing during the Physics test then that would be the CPU wouldn't it? I would test the GPUs with a stock and proven-stable CPU speed when testing the Lightnings, to eliminate another variable (CPU crashes). If you have the 3A BIOS and have to hard-reset after a crash, that's the CPU, not the Lightnings.

Edit- What the hell keeps happening here? During the first GPU test in 3dMark11, usage keeps dropping, or the clock keeps throttling. This is a pic of the first test, run in SLI, and the clock of the top card-

Either get a lot of low-usage spikes or a lot of clock fluctuation.
Edited by dph314 - 8/15/12 at 7:33am
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post #2196 of 7827
Yeah, it's the CPU OC that's crashing the 3DM11, but dropping the CPU OC would drop the P score more than a little more GPU OC would raise it. So while I might be able to turn the clocks up on the GPU and pass, I wouldn't get a better overall score. 19K P w/25K+ graphics was my goal, and I made that happen.

Edit: And it wasn't a hard crash in the physics, it'd just go back to the desktop with a little 3DM11 window that said something like "process unable to complete because of workload".
Edited by GnarlyCharlie - 8/15/12 at 7:36am
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post #2197 of 7827
So I've got the 680 Lighting today, but I got a problem with my voltage, I've tried the 2 bios from the topic starter followed the instructions everything went well, installed the drivers, And began overclocking with afterburner 2.2.3.

But here's the deal without juicing my core voltage it says is 1.214v that's alright I suppose but when I select more MHz for the core the voltage goes down instantly ? I've tested my 680 with 150+ on the core and the voltage displayed right then is 1.177v without touching the mV slider so it's down clocking my voltage from the standard 1.214v

with the 150+ I've down several test no errors whatsoever and with 93mV, Power limit 300 it displays 1.269v in windows? in games it peaked 1.3 max. I thought there was at least something like 1.35 possible with this bios LN2. Temps are fine.

Machine: Intel 2500K (4.8)
Memory 1866mhz
Windows 7 64bit
Tested 2 drivers.

Suggestions???
Edited by phazers - 8/15/12 at 8:14am
post #2198 of 7827
Quote:
Originally Posted by phazers View Post

with 93mV, Power limit 300 it displays 1.269v in windows?

Try measuring the voltage with a meter at the voltage check points on the card, the software readouts have not been reliable. Some guys get a repeatable reading with a set difference between software and the meter, but I don't think anybody gets true actual voltage in software.
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post #2199 of 7827
Quote:
Originally Posted by GnarlyCharlie View Post

Try measuring the voltage with a meter at the voltage check points on the card, the software readouts have not been reliable. Some guys get a repeatable reading with a set difference between software and the meter, but I don't think anybody gets true actual voltage in software.

Will do that in the weekend, I've got another problem that is voltage related with LN2 bios that is, my core and memory don't downclock in windows 1206mhz and 3000mhz is this somewhat related? with the problem I am having?

With the standard BIOS no down clock problems whatsoever.
post #2200 of 7827
There was a guy the other day had that problem, it was his mouse driver. I had it happen with the "performance" setting in Nvidia control panel. It's just a bug I guess.
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