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

Gregster · 11 Nov 2014 at 14:57

Jony27 said:
Getting a 780Ti IChill X3 off the MM and putting it under water.
Just wondering what sort of overclocks will I be looking at with 1.3v?
I know after reading some reviews, the overclocking headroom with these particular cards aren't much due to its out of the box clocks, but with added volts Im wondering what I can expect

Thanks.

Chip dependent bud but interested to see what you can achieve. Water likes those cards as well

Jony27 · 11 Nov 2014 at 15:30

I also noticed that Ti's can only have 1.212v instead of the 1.3v 780s get?
Dont know if this has changed since

Gregster · 11 Nov 2014 at 15:32

Jony27 said:
I also noticed that Ti's can only have 1.212v instead of the 1.3v 780s get?
Dont know if this has changed since

Yer, that is true and only the EVGA Classy allows higher volts (that I know of). For games though, it will be plenty

Jony27 · 11 Nov 2014 at 15:37

If I may ask, what is the stock volts for the Ti's?
Hoping to reach 1250-1300 boosted clocks with WCing and custom bios

Or is that too much to ask? I know its all about the chip

Gregster · 11 Nov 2014 at 15:43

Pretty sure it is 1.18V. The same as my Titans

Jony27 · 11 Nov 2014 at 16:05

Thanks, not much added on top then but hopefully it'll be enough for another 100Mhz or so

Jony27 · 20 Nov 2014 at 13:00

Hi Gregster, in the process of doing the mod to my 780Ti.
But after installing the MSIAB, I can't launch it as its telling me some components are missing, corrupted, expired?
Also, I know you said that no 780Ti other than than classys can get more than 1.212v, but is it possible to use Zawarudo's app to put it up to 1.25v?
Thanks

EDIT: OK was able to use the same stuff on the newer AB.
Now have 1.3v but power limit is still at 106% max

EDIT #2: Mistyped a letter in the bios name so it didn't flash

Now have 1.3v with 200% power limit.

One big question mark is, now when I run Valley, I am getting a lot worse score, before flashing, I was getting close to 50 FPS at 1440p Ultra benchmark, now its down to 37 at the same settings? :confused:

Disco_P · 20 Nov 2014 at 20:36

Check you power use when running the benchmark.

When I really push my 780 sometimes I get this weird "bug" where performance will hit the floor and power usage will drop from 130% to around 80%. Clocks and GPU use will be the same but frame rates drop to a third.

Jony27 · 20 Nov 2014 at 22:40

Thanks for that, aat first I was thinking I was looking at gpu usage but it was actually the power.
Mine runs at around 80% most of the time and sometimes spikes to 100% for a second

What did you do to get this fixed?

Disco_P · 21 Nov 2014 at 03:00

Here is the bad news, I haven't figured out how to fix it. I only ran into the issue when running bench clocks - I don't use the AB hack for 24/7 use as the performance available at 1.212v is enough for me.

I will look into this when I get some free time but I really have no idea where to start.

whyscotty · 21 Nov 2014 at 07:44

Jony27 said:
EDIT: OK was able to use the same stuff on the newer AB.
Now have 1.3v but power limit is still at 106% max

EDIT #2: Mistyped a letter in the bios name so it didn't flash
Now have 1.3v with 200% power limit.

IIRC you can't increase the voltage on the Ti's

Jony27 · 21 Nov 2014 at 09:07

I knew there was something up when I was able to put it up to 1.3v
I'll get evga precision x then.
Should still be able to use 1.212v and higher power limit right?

#EDIT: Well, tried Evga and same thing happens apart from only being able to use 1.212v. Power usage is still 80%

. Temps dont even go over 40C

Disco_P · 21 Nov 2014 at 11:21

The power use might only be 80% at 1.212v simply cause at that voltage the power use isn't that high (100% corresponds to 300W on Skyn3t Bioses).

For example my 780 @1.212v shows a power use between 70 and 80%.

Jony27 · 21 Nov 2014 at 12:16

Ah that sucks, pretty much makes the bios mod useless.
I found that by disabling vsync I can get power usage in the high 80s to 90.

Disco_P · 22 Nov 2014 at 07:53

Remember that 100% on skyn3t's bios is way more power than 100% on the stock bios.

Jony27 · 22 Nov 2014 at 11:24

Ah ok, took me a while to realise that.
Still doesnt explain why my FPS tanked down by 15fps

although, after disabling v-sync, I am getting my expected results.

TheGentry · 1 Mar 2015 at 20:00

Gregster hey I recently bought a a bgrade zotac 780ti when using the card on its own or sli he computer drivers crash or the computer ethier blue or black screens been told your the man who can help

Gregster · 1 Mar 2015 at 21:22

TheGentry said:
Gregster hey I recently bought a a bgrade zotac 780ti when using the card on its own or sli he computer drivers crash or the computer ethier blue or black screens been told your the man who can help

Strange one and normally a faulty card will result in "The driver has stopped responding and has recovered". What I would do is run the card on its own, drop all overclocks (including the CPU). Run Display Driver Uninstaller and then install the latest drivers from nVidia.

See how that goes with a single card and everything at stock. If it still does it, I would look to getting it replaced.

TheGentry · 1 Mar 2015 at 21:25

Yeah it has been doing the stopped and recovered thing Aswell I'll do as suggested always a punt with bgrade I suppose

Gregster · 1 Mar 2015 at 21:29

TheGentry said:
Yeah it has been doing the stopped and recovered thing Aswell I'll do as suggested always a punt with bgrade I suppose

Ahhh, that's a start. That sounds like a typical Gigabyte problem that they had on a number of the 780Ti cards and the occasional other card. What you could try is adding a custom BIOS with the volts set at 1.212 and that will help. Read my guide on how to do that or if you are not comfortable doing it, return it.