How to over volt a Titan, a 780Ti or a 780 guide

[Gregster]

Good work. Just be careful if you are on air. Keep a close eye on the temps, as they can soon start going up with a little extra voltage.

 

[Gregster]

I only ever used the zawarudo hack when I was benching hard. For 24/7, I use the 1.3V available in AB. I like that my card no longer boosts and throttles and keeps a constant clock.

Only use the Zawarudo hack if you want to go over 1.3V, the other stuff for normal day to day clocks.

 

[Gregster]

For arguments sake if I wanted to run 1.32 24/7 are you aware of the cold boot fix? Temps never go over 50 at 1.3v.

For sure I am aware and only seen it happen to one guy but if you are unsure, don't do it or you don't have another GPU, don't do it. The only way to recover it is with an IGPU or another GPU.

If you do have another GPU, here is the fix if you do run into problems and this pretty much is the same for all who have a bad crash. I shamelessly nicked this from another site

If you have a cold boot black screen after flash just follow thos step below to get you up and running
1 - Shutdown pc remove the PSU power cable
2 - Remove both 8pin cable from GPU
3 - Press power button in the rig to discharge the PSU and the rest of power in the circuit board
4 - Wait about a minute ( two minutes recommended )
5 - Plug back the PSU power cable
6 - Do not plug back the twi 8pin power cable to GPU.
7 - Turn on PC boot into UEFI or Bios and enable IGPU ( GPU integrated in the CPU ) exit and save
8 - Boot into windows and wait just a bit to drivers load
9 - Open GPU-Z you will see the GTX there but you cannot use it yet because it is only powered my PCI-E only
10 - Open nvflash and falsh back to working bios or vBios and have fun.

Make sure you follow the instructions perfectly before trying to flash the BIOS again. I just flashed my 780 Classified a week ago and had no issues.

The only difference is with another GPU, you would plug that into the top slot and plug the bad flashed GPU into the 2nd PCI-E slot and everything else is the same except number 7, which you shouoldn't need to do.

 

[Gregster]

Thanks for coming back to me Greg. Perhaps my understanding of the cold boot fix is incorrect however users on the overclock forums are refering to it when other users are specifically asking for a way to ensure that their chosen voltage (1.32 in my case) is maintained after: after burner is closed, or they reboot.

Thanks for the tip above though, lets hope I don't have to use it.

Ahhhh I see what you mean. Sorry, it was late and was a long long day I am not sure what the answer is to that. Draining all power to the system should do it or reflashing back if it happens to you. I did a flash and had the same thing on my Titan, where it was locked at 1.3V. I just reflashed it and it was sorted but not 100% on the Classy. Maybe someone here who has one can confirm/deny if they have had any issues and if so how they sorted it.

What OC are you guys getting with the Titan.

Having a play with mine and it seems to need more voltage to push it further.
It crashes out even with the card running under 70c on air while benchmarking.

My Air clocks with the bog standard BIOS was around 1150Mhz (Not game stable (pretty poor clocker)). I didn't try the AB hack till I put my card under water and now I sit at 1163Mhz at 1.212V and can sit at 1250Mhz @ 1.27V. I prefer to only go just over the 1.2 though, as I wouldn't want to ruin the life of my card and only go big on volts when I am doing a quick bench run. These things are fast enough already

 

[Gregster]

Flash it anyway. We all get that

 

[Gregster]

Just a heads up, skyn3t has added lots of bios files for custom pcb variant 780's, just flashed my phantoms with the jetstream bios (same pcb) & all is well, screens to follow!!

Sweet and he has a 300% power bios but that is a bit brave for my Titan.

 

[Gregster]

Gregster have you asked for this thread to be included in the useful links thread sticky

There has been several occasions when I have had to search for this top notch guide.

I thought it was easier to just add to the bottom of my sig

 

[Gregster]

Have you clicked the "unlock voltage control" in the - Settings - General section?

 

[Gregster]

I am using MSI AB beta 16 and it works a treat on that. Can you try that version for me please and let me know? Uninstall and if it hasn't, delete the MSIAfterburner folder and then install the Beta 16 and add the 3 lines to the ven10 file please.

http://www.guru3d.com/news_story/download_msi_afterburner_3_beta_16.html

Download from there.

 

[Gregster]

Sorry, I should have said. move any slider and click apply and that creates the profiles/folder

 

[Gregster]

That's done it

Onto the next step!

Cool and let me know if you have problems. Stick with the 1.3V for now please

Vdroop can be an issue and easily sortable.

 

[Gregster]

As in don't exceed 1.3v on AB? Yeah I hadn't planned to, I really don't fancy pushing too hard

I'll finish the rest of your guide before I tweak anything though anyway. Apart from the Zawardo bit

AB allows you to go to 1.3V and with the extra from the flash, you will be hitting 1.325v if you max it (which is fine).

The Zawarudo mod is sweet but the version I supplied isn't compatible with this AB but there is a newer one which works with AB beta 16.

 

[Gregster]

I wont bother adding any more V despite the temps being really good (<40*C)

@1.3v I'm benching +440/+650

Very nice clocks and temps. I couldn't get near that on my Titan without risking it with more volts.....

 

[Gregster]

Shame I seem to have hurt my 2500k though, it used to bench happily at 5.46GHz but now I can only get 5.1GHz... guess 1.6+ volts wasn't ideal That's hurting the benches now!

Those volts are nuts

And you have to remember that the 780 will be pushing your CPU when benching, it will pick out weaknesses in an overclock more so than say a 660 would.

Probably anyway, as I imagine more stress on the PCI-E lane.

 

[Gregster]

Yeah true. I didn't mind pushing £100 worth of CPU but this is by far the most expensive card I've ever had so I don't like to abuse it. Despite it barely costing me £200

Yer, I read you had a proper touch with selling your old card. Proper result.

 

[Gregster]

Guys I have my 780 at 1.212v via a modified BIOS but would like to get 1.3v

What's the best and easiest method? Getting 1.3v with Afterburner is a ball ache and I want an easier method.

Currently I'm rock solid stable at 1.3Ghz with 1.212v

BIOS flash and Afterburner sadly.

The toughest bit is flashing the card and then all you do is add 3 lines to a file in the AB folder. What 780 is it?

Edit:

WF, I just looked at your sig

 

[Gregster]

Greg baby stepped me through it lol. Livestreamed it to him
I'm slightly more retarded i feel

It was kinda my fault as well.

 

[Gregster]

It's all your fault!

What with these benchmark threads and this one!

Tis true

 

[Gregster]

it's all good fun though... What kind of clocks would you recommend for 24/7?
I'm only at 1920x1080 so I don't need to push it. I'm thinking somewhere around 1150/1650

Whatever you are comfortable with. 1.25V 24/7 should be no problem at all as you are on water, so 1250Mhz should be easily doable on the core and 1650Mhz on the mem.

 

[Gregster]

Would you say 1.3v would be ok on an Arctic Cooling Hybrid?

At 1.3Ghz core with 1.212v it's loading in the low 50's after heavy gaming.

My concern is VRM temps as well as the core temp. I read on another forum that the VRM's generally run 20c hotter than the core. The VRM's are rated for 120C I believe, so long as you keep temps down to 80c, you should be ok. Just keep a close eye on temps and kill the bench if it is getting too hot.