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[Official] NVIDIA GTX 780 Ti Owner's Club - Page 1529

post #15281 of 16429
I would think anyone who plans on pushing their systems to the max would make provisions for a little leeway for their psu when assembling their rig.

I tend to like overkill. It allows for expansion and I've never had to worry about power limitations. been using the same psu for years.


FF
smile.gif
post #15282 of 16429
Quote:
Originally Posted by Jasonbla20 View Post

Further to what other people have said, I can confirm that 850 W was not enough for my SLI'd 780 Ti classified's at 1.3V. Benchmarks would trigger surge warnings and my PC would shutdown. I just bought a 1200 W power supply. If you're thinking of SLI in the future, I would pick a good power supply at 1000W or greater.

Since you guys are talking 780TI SLI Wattage consumption when overclocking maybe i can give you guys some info.

I have 2 EVGA Reference 780Ti's that i hardmodded. I've done benchmarking one card at 1530mhz + so i thought that i should go on benching them in SLI now. rolleyes.gif

After a few runs i noticed that my computer was making hard shutdowns when passing 1430mhz and using 1.4v or more.
I downloaded Corsair link so i could monitor the PSU's Power OUT. The result blew me away literally.

My AX1200i was knocking the wall screaming for more power. The PCI-E rails draw so much power the PSU shut it self down to prevent any damage. Even disabling OCP "over current protection" and running the psu in Singel rail mode made no difference. tongue.gif
Pulling 1260W from the wall was the highest i saw before PSU shutdown. These kepler chips are amazing!

Here is some pics of the cards and system. smile.gif








Edited by TobbbeSWE - 3/30/15 at 10:08am
    
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post #15283 of 16429
Hey TobbbeSWE, I was wondering, how can yoh hardmod a GPU for it to have more voltage? I have an EVGA gtx 780 ti reference board and ive got it up to 1.212v but i would like to het it higher but idk how to. Also ive got an EVGA gtx 980 and a Titan X but idk how to more voltage.. Any help, what can I do? Or what I have to do?
post #15284 of 16429
Quote:
Originally Posted by BGaming View Post

Hey TobbbeSWE, I was wondering, how can yoh hardmod a GPU for it to have more voltage? I have an EVGA gtx 780 ti reference board and ive got it up to 1.212v but i would like to het it higher but idk how to. Also ive got an EVGA gtx 980 and a Titan X but idk how to more voltage.. Any help, what can I do? Or what I have to do?

It require some soldering on the PCB, voiding you warranty and risking destroying you card.
Custom BIOS is not enough on these cards if you wanna pass 1.212v

With those mods i got my card running even 1530Mhz!! At 1.45v that is. You need some serous water cooling tho.

Here is the guide!
http://www.overclock.net/t/1478066/nvidia-gtx-780ti-hard-volt-mod/0_20
    
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post #15285 of 16429
Thanks TobbbeSWE. I will look into this and IL let you know how I ended up lol. This is onl for the 780 ti right? there is nothing like this for a 980 or titan x?
post #15286 of 16429
Quote:
Originally Posted by BGaming View Post

Thanks TobbbeSWE. I will look into this and IL let you know how I ended up lol. This is onl for the 780 ti right? there is nothing like this for a 980 or titan x?

I only assume that Nvidia made the voltage regulation the same because the 780Ti version vas "successful". A PM to Occamrazor or his brother Skyn3t would solve your problem.
    
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post #15287 of 16429
Hey guys, been awhile. I am wanting to flash the bios on my EVGA Gtx780ti SC ACX.. All I'm looking for is to raise the power limit to 116% - 120% and maybe up the voltage a little. After doing a bunch of monitoring, it shows that the 106% power limit is whats holding me back. Doesn't matter what I set my clocks at, 106% keeps coming into play. For the most part in games my card runs at 1202mhz - 1250mhz and with 60% fan speed on the ACX cooler my temps are at most 67-68c, never seen 70c or above at all. It's time that I'd like to unlock some more power for this card. Any help would be much appreciated thumb.gif . I have looked on page 1 and tried to understand the instructions of using the Ez3Flash but it seems a little confusing even for me biggrin.gif

1. Which bios file would you recommend?
2. Whats the best way to flash cards now? NvFlash or Ez3flash?

I haven't flashed any cards since my 7970's back a couple years ago and have been not keeping up on my overclocking hobby as much as life has had me way too busy mad.gif

Thanks guys/girls.. Hope this can be a simple answer.

PS: anyone else with my same card that has been held back at clock speeds around 1200mhz - 1250mhz , after flashing your bios what clock speeds have you been able to safely reach? Was it worth it in the end? I do NOT want a expensive door stop or paper weight HAHA biggrin.gif
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post #15288 of 16429
Quote:
Originally Posted by TobbbeSWE View Post

I only assume that Nvidia made the voltage regulation the same because the 780Ti version vas "successful". A PM to Occamrazor or his brother Skyn3t would solve your problem.

Man thanks a lot. I've been trying to get someone that could help me and no one did and now after three weeks finally something lol. Thanks a lot man.
post #15289 of 16429
Anyone? Best bios file for my card would be great! I will be home in a few hours after work and would love to do this today, but just not sure which bios file I should use exactly. I see one listed for my card but was assuming that was the stock bios and not the one I want to flash too. Patiently waiting for a reply thumb.gif
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post #15290 of 16429
Quote:
Originally Posted by Hambone07si View Post

Anyone? Best bios file for my card would be great! I will be home in a few hours after work and would love to do this today, but just not sure which bios file I should use exactly. I see one listed for my card but was assuming that was the stock bios and not the one I want to flash too. Patiently waiting for a reply thumb.gif

1. Which bios file would you recommend? -- skyn3t for 780Ti SC ACX on page 1. But i think few people said it didn't work well. I guess you'd have to find out for yourself wink.gif

2. Whats the best way to flash cards now? NvFlash or Ez3flash? -- depends on whichever you're comfortable with.

I've also seen another bios a while back. Not sure how different it is from skyn3t (you can say i'm too lazy to open it in kbt)

GK110_SC_Modified.zip 130k .zip file
as always, use at your own risk thumb.gif
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