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~~The GTX 670 Overclocking Master-Guide~~ - Page 42

post #411 of 3357
Quote:
Originally Posted by Admiral Mudkipz View Post

Question. How do you know if you have a dead GPU? I can see everything fine, but a couple minutes sitting in Windows, a black screen just pops up on my monitor. Did I kill it through all the stress testing? Is it possible that it's a bad DVI cable? I don't think it's the monitor or its power brick because if the monitor/power brick was bad, I wouldn't be getting any sort of display at all.
Also, this phenomenon doesn't happen in safe mode.
EDIT: Ok, it does happen in safe mode.
EDIT 2: Interesting. If I turn off the monitor and then turn it back on, the display's all fine again.

Ruled it out as a cable issue. A new DVI cable fixed it smile.gif.
post #412 of 3357
Quote:
Originally Posted by Admiral Mudkipz View Post

Ruled it out as a cable issue. A new DVI cable fixed it smile.gif.

glad you sorted it out....simplest is the usually the best! biggrin.gif
post #413 of 3357
Quote:
Originally Posted by thegh0sts View Post

glad you sorted it out....simplest is the usually the best! biggrin.gif

It was simple...until all my overclocks failed, even at stock settings. Would crash to screen after two seconds of entering a BF3 server. Power and GPU usage on Afterburner would jack up to ridiculous loads (300k+ range). This was after various clean driver installation and reboots. The last reboot, I got no display on POST. However, I could hear the Windows loading screen, which means that the computer is OK, but the GPU is foobar'd. Isolated the problem by removing the card out, restarting computer, and the computer would still boot up, which rules out all the other parts in the computer, if they were actually at fault.

Started an RMA process already. Sigh...hopefully this new card clocks better than this one. I couldn't even touch 1200 MHz core clock on this one.
post #414 of 3357
Quote:
Originally Posted by Admiral Mudkipz View Post

It was simple...until all my overclocks failed, even at stock settings. Would crash to screen after two seconds of entering a BF3 server. Power and GPU usage on Afterburner would jack up to ridiculous loads (300k+ range). This was after various clean driver installation and reboots. The last reboot, I got no display on POST. However, I could hear the Windows loading screen, which means that the computer is OK, but the GPU is foobar'd. Isolated the problem by removing the card out, restarting computer, and the computer would still boot up, which rules out all the other parts in the computer, if they were actually at fault.
Started an RMA process already. Sigh...hopefully this new card clocks better than this one. I couldn't even touch 1200 MHz core clock on this one.

that's a shame, i hope you get it resolved and back with a new card to OC! biggrin.gif
post #415 of 3357
Quote:
Originally Posted by thegh0sts View Post

that's a shame, i hope you get it resolved and back with a new card to OC! biggrin.gif

Here's to hoping the new card can overclock better tongue.gif.
post #416 of 3357
Thread Starter 
Sorry guys, I've been extremely busy the last week and was unable to respond to any help requests. I scanned the ~200 or so posts i missed and it looks like everyone got help from someone else. If anyone still needs additional assistance, please feel free to re-ask your question (or link back to your original question). thumb.gif
post #417 of 3357
I followed the guide earlier in this thread and came back with this score although it is 3dmark basic -

http://3dmark.com/3dm11/3885038
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post #418 of 3357
Quote:
Originally Posted by SeanPoe View Post

You can unlink them and overclock each card separately. This will net you a little more performance but it will take about twice as much time. Just be sure you keep the card you aren't testing at stock clocks so you don't get a bunch of false-positives when testing the second.
For example
GPU1 = overclock testing
GPU2 = stock speed
Find GPU1 max stable clock and write it down
GPU1 = stock speed
GPU2=overclock testing
Find GPU2 max stable clock and write it down
Now set GPU1 to max overclock
Now set GPU2 to max overclock
You might also want to consider switching the better performing card to your first (top) PCI slot, as the top card does a little more work than the bottom one (this will equate to pretty insignificant FPS gains though, but if you're in to min/maxing, might as well tongue.gif)

Found a weird quirk when I moved the faster card on top. Got like 400 more points on 3dMark.... However, BF3 started to do the minimize (and cannot maximize) bug along with locking up and/or direct X errors. No matter what I did... reinstall drivers, run at stock speed, etc ... it gave me grief. It only happened when SLI is on. I switch the cards back to how I had it before, BF3 runs flawless now. Go figure.
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post #419 of 3357
I've used your guide to get a stable overclock of 1300 core and 7012 mem on my gigabyte gtx 670, runs heaven with score around 48 fps 1221 and 3dmark no issues. Yet i keep getting the same bug in bf3 that greg described, no error message or drivers failed message, just black screen and i have to end bf3.exe. It happens at random times, could be 10 mins in or 2 hours in. Again i can run skyrim,batman and such with no such issues. Temps are good as well, hardly breaks 55C in bf3 and 60C benchmarking. Voltage is at 1.175 and slider 112%.Havent seen power % go over 90 yet. I previously had a evga gtx 560 ti and never had this problem once. Thanks in advance.
Edited by Steven467 - 7/15/12 at 9:36am
post #420 of 3357
Hello everyone. I'm new here. First, I'd like to thank the author of this post and all the mods for sharing their OC expertise. As a new owner of an EVGA GTX 670 FTW and first time overclocker, I found all your comments very educational.

I attempted my first overclock with my 670 and would appreciate it if any of the OC experts here could please answer the following questions for me:

1. Did I calculate my Kepler Boost correctly? I calculated 91 with the out-of-the-box settings and a 92 after OC.
2. Is my Kepler Boost lower than the average 670 GPU Kepler Boost or is that not an apples-to-apples comparison since EVGA already OC the card above the standard 670 GPU?
3. Are my overclocked Unigine 'Heaven' DX11 Benchmark scores average, above-average, or below-average vs. the average EVGA 670 FTW GPU?
4. Are my OC settings of +50 GPU Clock / +160 Memory Clock.average, above-average, or below-average vs. the average EVGA 670 FTW GPU?
5. Is my EVGA 670 FTW GPU average, above-average, or below-average vs. the average EVGA 670 FTW GPU?

Out of the box, my EVGA 670 FTW GPU has a GPU Clock of 1006 and Boost Clock of 1085. I believe that EVGA overclocks the 670 FTW card as my GPU clock and Boost Clock are higher than a standard out of the box 670 GPU. I believe has a GPU Clock of 965 and a Boost Clock of 1045, correct?

486


When I ran the Unigine 'Heaven' DX11 Benchmark using the out of the box settings (No OC, no GPU offset, no Memory offset, no voltage increase), my maximum GPU Clock was 1176 (rounded up) and my maximum GPU Memory Clock was 3105 (=1552.5*2).

486 700

308


So does this mean that my Kepler Boost = Max GPU Clock - Boost Clock = 1176 - 1085 = 91? Since 91 is divisible evenly by 13 (=7), it seems like I calculated the Kepler Boost correctly.

Is my Kepler Boost low when compared to the average 670 GPU or is it not an apples-to-apples comparison since EVGA already OC the card above the standard 670 GPU?


After trying to find my best, stable OC settings as per this thread's instructions (max power +145%; max voltage 1175 mV), I eventually ended up with offsets of +50 GPU Clock / +160 Memory Clock.

I ended up with a maximum GPU Clock of 1227 and maximum Memory Clock of 3260 (=1630*2).

Are my OC results (from offset settings of +50 GPU Clock / +160 Memory Clock) average, above-average, or below-average vs. the average EVGA 670 FTW GPU?

486 486

So does this mean that my Kepler Boost = Max GPU Clock - Boost Clock = 1227 - 1135 = 92?


These OC settings ran successfully with the Unigine 'Heaven' DX11 Benchmark.

Are my Unigine 'Heaven' DX11 Benchmark scores average, above-average, or below-average vs. the average EVGA 670 FTW GPU?

700 311



So is my EVGA 670 FTW GPU average, above-average, or below-average vs. the average EVGA 670 FTW GPU?

Thank you all for your help. I really appreciate it.
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