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[OFFICIAL] GTX 660 (NON TI) Owners Club. - Page 668

post #6671 of 6761
The premise of the overclock within this thread to to modify the video card bios to allow for a higher than factory specified voltage, and a higher thermal value.

So there are a few parts in the whole process:
1 - Use GPU-Z to put a copy of your card's bios on physical media (HDD, usb etc)
2 - Use KPT (Kepler BIOS tweaker) to unlock the bios
2A - KBT on the page 1 may not work; there are links to newer versions in the tread; or just google it
2B - Alternatively, find an already modified BIOS in this thread (you can use non Gigabyte BIOS on your card, sometimes it causes some problems)
3 - use NVFLASH.EXE to flash the modified BIOS into your video card
4 - Use MSI Afterburner/GPU-Z etc and Nvidea Hair demo to check that while under load; your card is getting 1.21 volts (Modified BIOS works as intended)
5 - Use MSI Afterburner etc to increase your GPU core speed and memory speed until there are video driver fails, crashes, or artefacts on screen while GPU is under load (Nvidea hair demo, game, 3dmark etc). Then back up a bit and test again.

Try searching this thread for your "gigabyte" and have a look at some of the responses - there is a lot of information in here.
Also make sure it is a non-ti smile.gif and back up your original before you try.

If you get a black screen when flashing the bios just wait for a while and the picture should come back on (if you have 2 cards you can just swap the monitor input over).

Everyone's card is different. My ASUS 660's can only get to 1254 core / 6800 without failures (although at higher speeds I can play various games for minutes up to hours before the fail....)
post #6672 of 6761
Hey voxson5,

Thank you very much, it appears you were right. I have the latest bios for my MSI N660 GAMING 2GD5/OC (GeForce GTX 660 GAMING) which is MSINV287MS.2H0 .

i noticed that Yungbenny911 the thread starter has a similar MSI N660-2GD5/OC and his bios MSINV287MH.200


It is apparent he has an older bios than I do but our gpus seem to be the same or quite similar. Can I used his unlocked bios that he has provided in this thread?
post #6673 of 6761
Any of you playing heroes of the storm? My buddy has a gtx 660 and keeps getting that windows resources message about turning down settings. Hots isn't that demanding of a game but that message is annoying. Any drivers to avoid this?
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Boomstick
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4770K Asus Maximus Hero VI EVGA GTX760 SuperClocked  G.Skill Ripjaws X 1866 9-10-9-28 
Hard DriveHard DriveCoolingOS
Intel SSD 530 Samsung 840 Silverstone Argon AR01 Windows 7 Pro 
MonitorKeyboardPowerCase
HP w2207h Microsoft Comfort Curve 2000 Antec High Current Pro 750W Fractal Design Arc Midi R2 
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Mionix 8200 Puretrak Talent Creative Sound Blaster Z 
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post #6674 of 6761
Guys, anyone can tell me what kind of vrm cooler is on standard gtx 660 from palit?
http://www.palit.biz/palit/vgapro.php?id=2018
Is the vrm cooler separate from main core cooler, or it creates single heatsink. Thx in advance.
post #6675 of 6761
Hey!

I just overclocked my GPU, I did everything right but something went wrong. When I play a game it randomly shows me black screen and I need to restart my computer. How I can get back to my old version of bios? Regards
post #6676 of 6761
Telefaks - Did you make a backup of your BIOS? Just flash the backup onto your card.

If you didn;t - try downloading the appropriate BIOS from your manufacturers web site.


terranrus64 - You can certainly try; Just remember to make backups before you flash!



If in doubt read throught this thread, or even do a search for your issues or maufacturer. Good information still in here.
post #6677 of 6761
Hey voxson5,

I realized Yungbenny911 seemed to have a MSI 660 Twin Frozr III OC gpu ( https://www.techpowerup.com/vgabios/126373/msi-gtx660-2048-120823.html), which though very similar to my MSI 660 Gaming gpu (https://www.techpowerup.com/vgabios/145580/msi-gtx660-2048-130805.html) they each used a different bios.

His bios version was 80.06.10.00.15 while mine was 80.06.58.00.4C. I decided not to use his bios but to stick with mine. I would strongly suggest to others to use your own card's bios and not to blindly use a bios that is not specific to your card in order to avoid any possible complication.

I was not having any luck using KGB (Kepler Golden Bios) as I kept getting the following message " Hmm? Could not find Voltage offsets." so I used Kepler Bios Tweaker 1.27 and NvFlash 5.165. These worked for me.

I spent days reading over many posts in this thread and others and I must personally give a shout out to djthrottleboi and jason387 as their helping others was a BIG help to me, especially with regards to eliminating throttling through setting good power targets. I currently use 225000 mW throughout my power table and has completely eliminated throttling for me.

My current overclock is a stable 1215 Mhz for my TDP Base Clock and Boost Limit and 1602 Mhz on my memory clock using 1212.5 mV, coming from a max overclock of 1093/1502 on core clock/memory clock on my original bios using the MSI Gaming App.

I have tried going up to 1228 Mhz when overclocking my core clock but on my 4th loop on the Heaven Benchmark it would freeze momentarily and then resume at full speed as if nothing had happened. This would also happen in games however, where the screen would freeze, the music would play but I had no in game movement or control and i would have to go to task manager then go back into the game and i would resume normally. This happened sporadically, so I decided against keeping 1228 Mhz core clock.

I must confess I am jealous of some the higher overclocks I see posted I would love to get 1300 or even 1280 but alas it seems I must remain content with my humble 1215 Mhz overclock!

There is one thing that puzzles me however. I have an ASUS H61M-A/USB3 motherboard and an intel i3-3240 but GPU-Z says that I have a PCI Express 2.0 x16 @ 16 x 2 Bus interface on my motherboard but documentation online and in my mobo manual says its PCI -Express 3.0. My bios is up to date so I do not know why GPU-Z would be saying I have PCI-Express 2.0.

Does anyone know if PCI-Express 2.0 can limit a gpu overclock?

Here is my 3D Mark Firestrike results for anyone who is interested:

http://www.3dmark.com/3dm/8804105

Firestrike1.1results.jpg 411k .jpg file
post #6678 of 6761
Hey voxson5,

I realized Yungbenny911 seemed to have a MSI 660 Twin Frozr III OC gpu ( https://www.techpowerup.com/vgabios/126373/msi-gtx660-2048-120823.html), which though very similar to my MSI 660 Gaming gpu (https://www.techpowerup.com/vgabios/145580/msi-gtx660-2048-130805.html) they each used a different bios.

His bios version was 80.06.10.00.15 while mine was 80.06.58.00.4C. I decided not to use his bios but to stick with mine. I would strongly suggest to others to use your own card's bios and not to blindly use a bios that is not specific to your card in order to avoid any possible complication.

I was not having any luck using KGB (Kepler Golden Bios) as I kept getting the following message " Hmm? Could not find Voltage offsets." so I used Kepler Bios Tweaker 1.27 and NvFlash 5.165. These worked for me.

I spent days reading over many posts in this thread and others and I must personally give a shout out to djthrottleboi and jason387 as their helping others was a BIG help to me, especially with regards to eliminating throttling through setting good power targets. I currently use 225000 mW throughout my power table and has completely eliminated throttling for me.

My current overclock is a stable 1215 Mhz for my TDP Base Clock and Boost Limit and 1602 Mhz on my memory clock using 1212.5 mV, coming from a max overclock of 1093/1502 on core clock/memory clock on my original bios using the MSI Gaming App.

I have tried going up to 1228 Mhz when overclocking my core clock but on my 4th loop on the Heaven Benchmark it would freeze momentarily and then resume at full speed as if nothing had happened. This would also happen in games however, where the screen would freeze, the music would play but I had no in game movement or control and i would have to go to task manager then go back into the game and i would resume normally. This happened sporadically, so I decided against keeping 1228 Mhz core clock.

I must confess I am jealous of some the higher overclocks I see posted I would love to get 1300 or even 1280 but alas it seems I must remain content with my humble 1215 Mhz overclock!

There is one thing that puzzles me however. I have an ASUS H61M-A/USB3 motherboard and an intel i3-3240 but GPU-Z says that I have a PCI Express 2.0 x16 @ 16 x 2 Bus interface on my motherboard but documentation online and in my mobo manual says its PCI -Express 3.0. My bios is up to date so I do not know why GPU-Z would be saying I have PCI-Express 2.0.

Does anyone know if PCI-Express 2.0 can limit a gpu overclock?

Here is my 3D Mark Firestrike results for anyone who is interested:

http://www.3dmark.com/3dm/8804105
post #6679 of 6761
So i bought GTX 660 from palit and can confirm to myself that vrm heatsink is separated from main core heatsink smile.gif hope it will keep vrms cool when ill put a GPU core water block, and take out the air cooler.
post #6680 of 6761
Hey guys, anyone will be willing to mod my bios?

660.zip 56k .zip file

I have ASUS 660 DirectCU II.

Thanks in advance!
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