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[Official] NVIDIA GTX 660TI Owners club - Page 187

post #1861 of 3662
Quote:
Originally Posted by jeri View Post

how you keep your 660 ti under 70°? mine gets to hot 75+, without raise the fan on 60%, but thats unbareable loud. and its only 1065 clock/ 3280 memory... i gues my case airflow sucks ;(
there a huge difference between reference fan/HS and 3rd party dual fan setups .

My MSI 660ti PE/OC hits maybe 50-55% fan speed with temps below 60 if I want it , I try an keep it around 61c for max clock but HS/fan combo can do low 50to mid 50'sc if you wanted and its very quiet (well my CPU fan is louder ).

If I crank it up to 70+ % then it starting to get loud but then temps are very low .
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post #1862 of 3662
Quote:
Originally Posted by ElevenEleven View Post

Mine doesn't stay under 70C in gaming--more like 72-73C, but it's a reference design which I keep at lower fan speeds, because of the buzzy fan. For testing and benchmarking, I run the fan at static 80% speed to avoid throttling. I almost swapped the reference heatsink for something else, but it actually works very well in my Define R4, so I left it alone for now. If I unlock the voltage, I'll swap the heatsink. I'm just not sure how much unlocking voltage would help, just because I couldn't get past 1215MHz core stable in Heaven 3.0 even when the card did not reach 70C (max fan speed)--and I do see close to 100% GPU utilization running it, so it was definitely stressed. I thought it was a good indicator of what a card can do, running Heaven 3.0 at max possible settings without crashing / artifacts and preventing temperature from going past 70C while still not making it past 1215MHz stable (can sometimes hit 1226MHz).

you would have to try an see .

On my card just a 10mv increase made clocks that were not stable, very stable and 20mv got me another jump or tow on clocks . I don't look for max clocks at max volts so can't say, plus your card is different so only way is try it an see .
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post #1863 of 3662
Quote:
Originally Posted by jeri View Post

how you keep your 660 ti under 70°? mine gets to hot 75+, without raise the fan on 60%, but thats unbareable loud. and its only 1065 clock/ 3280 memory... i gues my case airflow sucks ;(

It also depends on your ambients... is it getting hot where you're at? Have you even made a custom fan profile?
post #1864 of 3662
Quote:
Originally Posted by Samurai707 View Post

It also depends on your ambients... is it getting hot where you're at? Have you even made a custom fan profile?

not rly hot, i think my case has just bad flow and i have no extra fan/cooling in what so ever ._.
post #1865 of 3662
Quote:
Originally Posted by kjekay View Post

All thanks go to CrazyNuts from http://www.xtremesystems.org/ who programmed this wonderful thing!

Here is what i did to get 1320mhz stable overclock in Heaven 4.0. Before it would crash very much compared to 3.0 even at 1267mhz, so i figured that i needed to unlock my voltage to get it stable.


1. Download kepler bios editor with unlocked preset here: https://www.dropbox.com/s/d6dimgnx8cxvlca/kgb_0.6.1.zip

2. Extract bios .rom from GPU-z and put rom file in same folder as the extracted zip above.
(WARNING: Before extracting your bios, please have fresh install of your nvidia driver or make sure ALL Settings\profiles in nv control panel are at default + ALL OC SETTINGS AT STOCK.)

REMEMBER TO KEEP BACKUP OF ORIGINAL .ROM FILE

3. In the folder with editor and .rom file, make a txt document where you write without quotes "kgb.exe GK104.rom unlock" and save the txt document as a .BAT file.

4. Run the bat, bios file gets modified. (eventually edit the kgb.cfg first for manual settings, experienced users only, not recommended)

5. Then download NVflash for windows, put the modified GK104.rom in same folder as nvflash.

6. Then open a new txt document where you write without quotes "nvflash.exe GK104.rom" and save as .BAT file. (in same folder as nvflash.exe and the modified .rom file)

7. Run the BAT and follow instructions in nvflash command line (basicly you just press "Y")
If the bios is write protected, try "Nvflash --protectoff" first.

8. Restart Computer.

Voila! You will have unlocked power limit to 150% now and unlocked voltage control. Remember your card will boost much, much higher than before now so keep those afterburner settings at stock and start from there. Also watch your temperatures closely and make sure all cooling is optimal.

(I take no responsibility for anything you may encounter. I followed the steps above and it worked for me. Should you encounter major problems, then boot up with Integrated graphics and flash back to default bios.)

Good Luck & Have fun Overclocking! thumb.gif


I'm a bit confused, after step 4 the modified rom file is it the file you put in the folder that's modified or do you need to extract the rom file again for GPU-Z for the next step? I followed all these steps as I understood them, using the rom file that I originally extracted to the folder. When I finished and reboot, nothing appears to have changed, I'm still limited to 123% Power Target and 1150 mV. Help! What did I do wrong?
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i5 3570K @ 4.7 GHz Gigabyte GA-Z77-D3H EVGA GeForce GTX 660 Ti SC 2 x 4 Gb Carsair Vengeance LP 1600 Mhz 
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Samsung 830 Series 128GB 2.5" Solid State Disk Seagate Barracuda 1TB 3.5" 7200RPM Internal Har... MSI DH-24AAS-17 R DVD/CD Writer Corsair H100 92.0 CFM Liquid CPU Cooler 
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Microsoft Windows 8 Pro 64-bit Dell S2330MX 60Hz 23.0" Monitor Microsoft SIDEWINDER X4 Wired Gaming Keyboard Corsair TX650M 80 PLUS Bronze Certified ATX12V... 
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post #1866 of 3662
Quote:
Originally Posted by 32oz View Post

I'm a bit confused, after step 4 the modified rom file is it the file you put in the folder that's modified or do you need to extract the rom file again for GPU-Z for the next step? I followed all these steps as I understood them, using the rom file that I originally extracted to the folder. When I finished and reboot, nothing appears to have changed, I'm still limited to 123% Power Target and 1150 mV. Help! What did I do wrong?

Never mind, I got it... I didn't extract the first zip file before clicking on the bat file I created. lol
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Samsung 830 Series 128GB 2.5" Solid State Disk Seagate Barracuda 1TB 3.5" 7200RPM Internal Har... MSI DH-24AAS-17 R DVD/CD Writer Corsair H100 92.0 CFM Liquid CPU Cooler 
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i5 3570K @ 4.7 GHz Gigabyte GA-Z77-D3H EVGA GeForce GTX 660 Ti SC 2 x 4 Gb Carsair Vengeance LP 1600 Mhz 
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Samsung 830 Series 128GB 2.5" Solid State Disk Seagate Barracuda 1TB 3.5" 7200RPM Internal Har... MSI DH-24AAS-17 R DVD/CD Writer Corsair H100 92.0 CFM Liquid CPU Cooler 
OSMonitorKeyboardPower
Microsoft Windows 8 Pro 64-bit Dell S2330MX 60Hz 23.0" Monitor Microsoft SIDEWINDER X4 Wired Gaming Keyboard Corsair TX650M 80 PLUS Bronze Certified ATX12V... 
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Cooler Master CM 690 II (Black) ATX Mid Tower Razer - DeathAdder 3500 Rocketfish - Gaming Mouse Pad Asus Xonar DG / Sennheiser HD 380 Pro 
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post #1867 of 3662
Quote:
Originally Posted by Edkiefer View Post

there a huge difference between reference fan/HS and 3rd party dual fan setups .

My MSI 660ti PE/OC hits maybe 50-55% fan speed with temps below 60 if I want it , I try an keep it around 61c for max clock but HS/fan combo can do low 50to mid 50'sc if you wanted and its very quiet (well my CPU fan is louder ).

If I crank it up to 70+ % then it starting to get loud but then temps are very low .

so its impossible/dangerous to go further, without custom fan+extra fan+good case cooling i see. well ok.
post #1868 of 3662
Quote:
Originally Posted by jeri View Post

so its impossible/dangerous to go further, without custom fan+extra fan+good case cooling i see. well ok.

I don't think dangerous unless temps are way up past 80'sc , I just say 70c as then it will throttle down one step (13mhz) , if it goes to 80c then another 13mgz lost .

So keeping it cooler then 70c keeps clock speed up, at least as for as temps go .

If say your temps are in the low 70's c that doesn't stop you from OC but you be fighting the throttle issue with temp .
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post #1869 of 3662
hm at 74-75° running heaven 4 benchmark i couldnt see any throttling in msi afterburner.
post #1870 of 3662
You guys have had a win in the silicon lottery with my setup on 1202 unlocked bios mine can only get 1172 - 1176 / 3600 - 3640 stable for benchies and testing and 1124 / 3600 - 3640 stable for gaming between 61c - 67c not to shabby for reference cards smile.gif @ 1124 that's 200mhz + over stock thumb.gif I can get that on standard bios . So to get 1200 + stable i'll need bios's that have voltage bumped up to the next power level 1.232v ? Will it be worth the extra temps ? I bloody well hope so tongue.gif
EDIT : cards will not go past 1.212v mad.gif
Edited by HOMECINEMA-PC - 4/1/13 at 1:14am
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