- Joined
- Mar 7, 2011
- Location
- New England
So I flashed the BIOS on my Galaxy GTX 560 this weekend in order to increase the voltage beyond 1.15v. I figured this would allow me to increase clock beyond the 1GHz brick wall I hit. Before the flash I could run the card through 3DMark 11 at 1GHz w/1.15v, but would get stability problems and it would usually reset shortly after the bench completed. Any higher clock and it would not run the bench at all. I figured a little more voltage and I could get it stable and maybe even push it higher.
The process was not easy. I tried a number of ways to get BIOS off of card and all but nvflash gave me a bad file. Also, only nvflash 5.1 will read GTX 5xx cards, so had to make a boot disk. Once I did this, was fairly easy to edit with nibitor to increase voltage limit and flash with nvflash.
The results kinda surprised me. I am no more stable at 1GHz and higher than I was before. In fact, even at my previous rock solid 930MHz OC I am not stable at 1.2v. However, now I am more stable at 1.1v and have been running it error free at 980MHz w/1.1v for over 24 hours now. So to sum it all up
Previous - Max OC 1GHz w/1.15v - Not stable long term
- Stable OC - 930 w/1.1v - Rock Solid
New Bios - Max OC 1GHz w/1.15v - Still not stable long term
- Stable OC - 980 w/1.1v - so far so good
Temps max out @ 71c when folding w/1.1v @ 980MHz, so this will probably be the limit for long term OC, but there is still some headroom to push it higher for benchmarks. Does anybody else have any experience with flashing bios on these cards? I am not open to hardware modding the card at this point, but might consider it in the future.
Ethan
The process was not easy. I tried a number of ways to get BIOS off of card and all but nvflash gave me a bad file. Also, only nvflash 5.1 will read GTX 5xx cards, so had to make a boot disk. Once I did this, was fairly easy to edit with nibitor to increase voltage limit and flash with nvflash.
The results kinda surprised me. I am no more stable at 1GHz and higher than I was before. In fact, even at my previous rock solid 930MHz OC I am not stable at 1.2v. However, now I am more stable at 1.1v and have been running it error free at 980MHz w/1.1v for over 24 hours now. So to sum it all up
Previous - Max OC 1GHz w/1.15v - Not stable long term
- Stable OC - 930 w/1.1v - Rock Solid
New Bios - Max OC 1GHz w/1.15v - Still not stable long term
- Stable OC - 980 w/1.1v - so far so good
Temps max out @ 71c when folding w/1.1v @ 980MHz, so this will probably be the limit for long term OC, but there is still some headroom to push it higher for benchmarks. Does anybody else have any experience with flashing bios on these cards? I am not open to hardware modding the card at this point, but might consider it in the future.
Ethan
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