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How to undervolt more than EVGA Precision will let me?

post #1 of 3
Thread Starter 
I've got a GTX 560SE that I want to undervolt.

Stock voltage is .937v. I can crank voltage up to 1.063v but I can't bring it any lower than .912v.

Stock clocks are 770/1915 and I can run those clocks fine on .912v. I wouldn't mind underclocking and getting it in the .85v-.88v range.

I've flashed a few video card BIOSes before but from what I'm told, it doesn't work that way with new cards ... right?

Any way for me to make this slightly less power hungry for a CS:GO and HTPC rig?
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post #2 of 3
Try other overclocking tools to undervolt like MSI Afterburner (Sapphire, Asus and Gigabyte have software as well) and see if they let you go down even further.
 
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BitoHeaven
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Intel i7 4770k @ 4.5GHz Asus Maximus VI Gene Gigabyte R9 290 @ 1160MHz/1350MHz Gigabyte R9 290 @ 1160MHz/1350MHz 
RAMHard DriveHard DriveOptical Drive
G.Skill Trident X 2X8GB DDR3 2400MHz Samsung 840 PRO 256GB  Seagate Barracuda 7200.14 3TB SATA III 6Gb/s 64... Pioneer Blu-ray Burner 
CoolingOSMonitorKeyboard
Liquid Single Loop Triple Radiators Win 7 SP1 Professional x64bit  Samsung SynchMaster 24" Widescreen 1200p TFT-LC... Logitech G15 
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Crucial SSD 128GB mSATA SATA III 6GB  Seagate Barracuda 7200.12 1TB SATA II 32MB 7200RPM LG DVD R/W SATA with LightScribe Corsair Cooling Hydro Series H100 
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post #3 of 3
Thread Starter 
They don't. redface.gif

Did some more research for anyone curious like I was. Turns out the limits for voltage adjustments through software are set by the BIOS. If you can get the BIOS off and open it in NiBiTor or Fermi Voltage Editor 1.55v or Svet's Fermi/Kepler Tuner & you can change it. Then you reflash your card's BIOS with nvflash (same program to extract the BIOS to begin with) and the limits are changed.

AFAIK this is for GTX 500 series only. Only card I did my research on.

I've used nvflash for voltage adjustments on old cards (unlocking old 9600GSOs and bumping voltage on my 6800GS) but they weren't adjustable through software ... you just set it on the cards BIOS and it was set. biggrin.gif Kinda different.

Problems being:

a) some oddball cards like mine (GTX 560SE) aren't supported in NiBiTor.
b) Fermi Voltage Editor 1.55v suffers from the same problem.
c) Svet's program isn't free and for ye pirates ... good luck.

Basically I have my BIOS ready to be modded but no program that will let me play with it ... and they're all no longer supported as far as I know haha.
2 OP pls nerf
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2 OP pls nerf
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