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[Official] NVIDIA GTX 660TI Owners club - Page 192

post #1911 of 3662
Quote:
Originally Posted by Mephic View Post

Power management set to maximum performance. What is weird, that if i set it to adaptive in Windows 8 it won't set itself to adaptive until I reboot windows.

Same thing at stock clocks (even worse actually, cause maximum and minimum FPS are lower).

Try using Precision X and enable K-BOOST...and see if it helps. (Precision X>Voltage>K-Boost>Enable)
post #1912 of 3662
Just flashed the BIOS of my EVGA GTX 660TI FTW Signature 2 and it went well!

I had to drop the core clock down by a whopping -120Mhz to get the boost clock to stock level (1213Mhz). Currently getting 705 on Unigine Heaven 4.0. Now let's see how high I can push this baby - wish me luck! biggrin.gif
post #1913 of 3662
Finally received my 2 cards and they are awesome. They can run @ 1267mhz and +500 memory on SLI @ stock volts. Managed to get 19k(gpu) in 3DMark11, that is pretty impresive biggrin.gif Now I got to figure out how to unlock the cards and see what I get.

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post #1914 of 3662
Would I get a more stable overclock by swapping to a better thermal pad between the VRM heatsink and the VRMs? I have no way of knowing how hot they get, sadly, since GPU-Z doesn't provide those temperatures. I just wonder if I'm fine with my large VRM heatsink and stock thermal pad or if changing to an 11Wm/K pad would help. Or if it's a waste of money.

If overclock stability has little to do with VRM temperature (unless they really overheat), then I'll stick with the stock pad.
   
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post #1915 of 3662
I managed to flash the cards with the KGB and now I can run SLI 1333mhz with +600 mem by just bumping the power target to 150. Looks like theres more to be gained but will need to modify the bios to allow more boost. Will have to wait till the weekend.....
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post #1916 of 3662
OK - I tried to use K-Boost and performance is the same in benchmarks (sometimes even worse). And same in games plus I can't see GPU usage with it (0% all the time).

Yesterday I swapped the drivers again to 306.97, put maximum pre rendered frames to: 3. In World of Tanks it's a bit better but what I've noticed is the game utilizes 100% of one of the cores so I guess that there is really a bottleneck even on my 3570K. I've managed to up the voltage of the CPU from 1,18v to 1,24v and stabilize at 4,6 GHz instead previous 4,5. I can't break the 4,7 barrier though - for 4,7 I need over 1,35v so it's not worth it I guess.

But still - in 3dmark11 gpu usage drops sometimes and FPS drops with it.

What I started to think about is my motherboard BIOS - I have 1.5 version which is not available on MSI site (I heard it's bugged). Would it be safe to flash it? What's the best way? Is M-Flash or Live Update5 save or it's better to do it different way? I know it's not motherboard topic but maybe someone will be able to help.
post #1917 of 3662
I just recently flashed my 660 TI PE, I set everything to defaults/stock (NVIDIA Control Panel & AB Speeds). I flashed my GPU fine and restarted. However when I ran Heaven the speed wasn't 1215Mhz like it should be as default, It was 1306Mhz. Now I overclocked on the default BIOS fine with this speed but I know for sure I reset it. Is this a coincidence or did it not register of something?

When I ran on stock unlocked BIOS it crashed instantly, So I rolled back and my driver to default and my speed was 1215Mhz again. However I cant achieve 92/550 anymore, I had to bring it down to be stable?
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post #1918 of 3662
One more thing to add - with K-Boost on, my GPU clocks still go down sometimes in 3dmark11!! Does it mean it's power related? My power% didn't go over 90% when it happened. Temps were much lower than 70 degrees either.
post #1919 of 3662
Quote:
Originally Posted by deception345 View Post

I just recently flashed my 660 TI PE, I set everything to defaults/stock (NVIDIA Control Panel & AB Speeds). I flashed my GPU fine and restarted. However when I ran Heaven the speed wasn't 1215Mhz like it should be as default, It was 1306Mhz. Now I overclocked on the default BIOS fine with this speed but I know for sure I reset it. Is this a coincidence or did it not register of something?

When I ran on stock unlocked BIOS it crashed instantly, So I rolled back and my driver to default and my speed was 1215Mhz again. However I cant achieve 92/550 anymore, I had to bring it down to be stable?

That's normal, the unlocked card has a much higher boost clock at stock. You need to lower the core clock to get it back down to "real" stock levels.
post #1920 of 3662
Hello, I just submitted the form but do I have to wait till the OP's list gets updated before I'm really a member? Anyway, I have two AMP! editions and what're normal clocks on load @stock?
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