Originally Posted by Timx2
I did some overclocking today with my 770 Lightning and I've reached the following results:
3dMark 11 12.414
Heaven Extreme Preset 1415
Valley Extreme Preset 2211
I am happy with the results. The scores are pretty good, I think. Overall it is 10% better then stock settings. But what about my settings. Are they safe for 24/7 usage? Can I go for even higher (24/7) clocks with the voltage unlocker? Or should I stop here/lower stocks? Temperature is at max. 73 degrees (GPU) and 69 degrees (VRAM). Fan speed is max. 53%.
Looking forward to see some feedback!
Overclock 770.jpg 182k .jpg file
How new are you to overclocking? I think you may see some improvement from going to stock, then find the max stable core overclock on stock volt, then set core to stock and do memory, then combine the two. You may need to drop memory a hair to keep the core stable, then at that point add voltage doing the same process. You can use the unigen valley bench as a decent benchmark, but some games may need a hair more voltage to keep the clocks stable, its just a good baseline. If it passes 3 loops of valley its probably 99% stable
Originally Posted by Jabba1977
Very nice cards!!!!, Mine are stable too about 1300 at 1.21v ... I´m very, very happy with this purchase... Do you think is a worth upgrade to 780?...Wich model?... I´m at 1600p but I think this two lightnings are sufficient without filters and I can wait until next gen ....
Do you think that is a safe voltage for 24/7 about 1.35v on the lightnings...?????. For test I put on one card 1.4v ; seems stable about 1450Mhz but I think this voltage is too much... What is your recomendation for Memory voltage and Aux voltage???
I´ll doing valley benchmark soon, I only doing this unigine for now because I have the graphics since last week and I don´t have time!!!!.
Myself being short on time often is why I love the valley benchmark, its a much faster bench than heaven. Heaven 4.0 is super tough on a card though so your max valley OC may be 15-30mhz less on heaven. Seems like you have a solid pair of cards, I only have one asus right now, thinking about sli but I know I would be disappointed if I didnt get as good of a second card so I may just step up to a 780 when I need more power.
For your resolution I would pick a 770sli over a single 780 unless you would consider a 780sli in the future. Only thing I could think is if actual gaming minimum fps are lower than a single 780, thats what I would be concerned with. I like high averages, but the low mins are what you feel.
Honestly for max 24/7v I wouldnt worry at all about 1.35v so long as temps are ok. I only have been gaming at 1463mhz and 1.398 (basically 1.400v lol) with temps never breaking 55c and havent hurt the card yet. I got my card at launch, did the volt unlock mod on 8/20/13 and have done more benching than gaming but sure put it through its paces on bf3 and maybe 2-3hrs of bf4 beta and the card hasnt complained.
There is no guarentee but thats what I have run without killing the gpu core, your pcb is im sure at least equal to if not better than the asus one for over volting so have fun and do it at your own risk.