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Running 660 Ti SLI, different clocks

post #1 of 6
Thread Starter 
What's up, I have a:

GIGABYTE 660 TI factory OC'd (Core Clock: 1032MHz Boost Clock: 1111MHz)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125450

and I want to SLI with:

Asus GTX660 TI with factory OC'd (Core Clock: 1006MHz Boost Clock: 1085MHz) (LESS THEN GIGABYTE)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121767

I know that for SLI they have to be same clock. I also know of stuff like MSI Afterburner, ASUS's GPU Tweak, RIVA tuner.

My question is... if I used these programs to change the clocks, do I need to have the program open for the clock to stay there or can I just use the program to set the clock and it will stay even if I restart my pc and don't have program opened?

Can I change graphics cards clock in bios or Nvidia control panel??
Edited by Scrubls - 9/4/13 at 3:55am
     
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Intel Core i5-3570K @ 4.5 Asus P8Z77-V Gigabyte Windforce GeForce GTX 660 Ti 3GB OC SLI Corsair 8GB Vengeance LP 
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post #2 of 6
For SLI they do not have to be the same clock. They need to be the same model (660ti SLI with 660ti), VRAM doesnt matter too much (as there is a way to SLI a 2GB and a 4GB card), but you should stay with the same VRAM model as much as possible.

I know for MSI Afterburner you have a choice to "apply overclock at system start up" its a little check box you can check and it will apply the OC profile you set. If you dont want it to go at start up you can leave it unchecked and it will only load the OC profile when you click the specific profile you want or move the sliders around.

You use MSI Afterburner or EVGA Precision or any other Riva tuner like ASUS GPU Tweak.... etc.... to change the Graphics card Core Clock. You cannot change it in your BIOS or NV Control Panel.

My two cards in SLI have different clocks. One goes up to 1293, and one goes up to 1215. Its perfectly fine to have different clocking cards as long as they are the same model.
post #3 of 6
Thread Starter 
Thanks for the quick reply, I wont touch clocks then, they are nearly the same anyway, I just didn't want to be dependent on a program to over clock. You know like a CPU overclock, you go to bios overclock and that's it, no apps at start up or whatever.
     
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Intel Core i5-3570K @ 4.5 Asus P8Z77-V Gigabyte Windforce GeForce GTX 660 Ti 3GB OC SLI Corsair 8GB Vengeance LP 
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Hitachi 7200 rpm 150GB Western Digital Caviar Black 1TB  Cooler Master Hyper 212 EVO  Windows 7 64-bit 
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NEC EA244WMi HP SK-2960 Corsair HX850 Professional Series Corsair Carbide 500R 
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CPUMotherboardGraphicsRAM
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Intel Core i5-3570K @ 4.5 Asus P8Z77-V Gigabyte Windforce GeForce GTX 660 Ti 3GB OC SLI Corsair 8GB Vengeance LP 
Hard DriveHard DriveCoolingOS
Hitachi 7200 rpm 150GB Western Digital Caviar Black 1TB  Cooler Master Hyper 212 EVO  Windows 7 64-bit 
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NEC EA244WMi HP SK-2960 Corsair HX850 Professional Series Corsair Carbide 500R 
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CPUMotherboardGraphicsRAM
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post #4 of 6
Quote:
Originally Posted by Scrubls View Post

Thanks for the quick reply, I wont touch clocks then, they are nearly the same anyway, I just didn't want to be dependent on a program to over clock. You know like a CPU overclock, you go to bios overclock and that's it, no apps at start up or whatever.

You dont need to be dependent on a program to overclock. If the cards run at different speeds then thats fine. You can overclock a CPU by messing with the BIOS settings. But for a GPU; to overclock it you'll need a software to do it like any variation of a Rivatuner. (Afterburner, Precision, etc). You can start editing the GPU BIOS like you would with a CPU but its a lot more different; and you could really mess your card if you dont know what youre doing.... so thats why we have easy programs like Rivatuner which will allow us to do a software overclock of the graphics card.

Unlike a CPU where you go in the BIOS, the most effective way is to use a simple Rivatuner and drag the bars accordingly to match the clock you want smile.gif
post #5 of 6
Thread Starter 
Yeah.. I'm going to leave them at the factory clocks. BTW just bought the ASUS. smile.gif

Thank you very much, sir!
     
CPUMotherboardGraphicsRAM
Intel Core i5-3570K @ 4.5 Asus P8Z77-V Gigabyte Windforce GeForce GTX 660 Ti 3GB OC SLI Corsair 8GB Vengeance LP 
Hard DriveHard DriveCoolingOS
Hitachi 7200 rpm 150GB Western Digital Caviar Black 1TB  Cooler Master Hyper 212 EVO  Windows 7 64-bit 
MonitorKeyboardPowerCase
NEC EA244WMi HP SK-2960 Corsair HX850 Professional Series Corsair Carbide 500R 
MouseMouse Pad
Razer Lachesis (old but still going) Desk 
CPUMotherboardGraphicsRAM
Intel Core i7 920 Asus Rampage II Extreme Powercolor HD 4870 X2 OCZ Gold 6GB DDR3 1600mhz 
Hard DriveOptical DriveCoolingOS
WD VelociRaptor 10000rpm Plextor PX-810SA Zalman CNPS11X Extreme Windows 7 64-bit 
MonitorKeyboardPowerCase
LG W2452V Logitech G15 Enermax Galaxy 1000w Thermaltake Spedo Advance 
MouseMouse PadAudio
Razer Lachesis Desk SupremeFX X-fi 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel Core i5-3570K @ 4.5 Asus P8Z77-V Gigabyte Windforce GeForce GTX 660 Ti 3GB OC SLI Corsair 8GB Vengeance LP 
Hard DriveHard DriveCoolingOS
Hitachi 7200 rpm 150GB Western Digital Caviar Black 1TB  Cooler Master Hyper 212 EVO  Windows 7 64-bit 
MonitorKeyboardPowerCase
NEC EA244WMi HP SK-2960 Corsair HX850 Professional Series Corsair Carbide 500R 
MouseMouse Pad
Razer Lachesis (old but still going) Desk 
CPUMotherboardGraphicsRAM
Intel Core i7 920 Asus Rampage II Extreme Powercolor HD 4870 X2 OCZ Gold 6GB DDR3 1600mhz 
Hard DriveOptical DriveCoolingOS
WD VelociRaptor 10000rpm Plextor PX-810SA Zalman CNPS11X Extreme Windows 7 64-bit 
MonitorKeyboardPowerCase
LG W2452V Logitech G15 Enermax Galaxy 1000w Thermaltake Spedo Advance 
MouseMouse PadAudio
Razer Lachesis Desk SupremeFX X-fi 
  hide details  
Reply
post #6 of 6
Quote:
Originally Posted by Scrubls View Post

Yeah.. I'm going to leave them at the factory clocks. BTW just bought the ASUS. smile.gif

Thank you very much, sir!

Yeah sure, factory clocks work perfectly fine. I had a 560ti SLI build previously; one card at stock factory OC settings would clock to 880mhz and the other was a NON-factory OC card and it would only OC to 824mhz. They both had different clocks but worked perfectly fine.

Good luck with your build and happy gaming biggrin.gif
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