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GTX 780 Owners Club

Rroff said:
Not really much too it overclocking wise - one thing to remember is that the 780 core speed is in 13MHz bins and the memory clock in 6MHz steps - so doing i.e. 5MHz at a time increases to find where its stable is a waste of time.

I've found that a quick and dirty way to test it is to grab heaven benchmark - for most cards you will get:

[stable bin]
[black screen during heaven benchmark bin]
[artifacts/crashes out bin]

So finding where it black screens on the core in heaven and backing off to the next lower bin usually results in completely stability... usually.

See my post here also: http://forums.overclockers.co.uk/showpost.php?p=25527473&postcount=18 (keep in mind those figures I put there are just for illustration purposes).
Click to expand...

Thanks mate, been playing with my Lightning LE today, it is an amazing card. I am using a +38mv core voltage with 109% power limit, I have 1085mhz on the core which boosts to 1241mhz. I think the power limit is stopping me from going higher :(

I have the memory at 6412mhz at 1700mv and seems to be stable, it is Elpida so I can see myself hitting my max memory overclock very fast. It might be time for me to replace my bitfenix shinobi with a Corsair 540, I have to keep it at 75% to keep it below 80c.

If anyone is looking at this card I highly recommend it, it is just the normal Lightning at stock clocks. The box, accessories, cooler, PCB are all the Lightning one. :D
 
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Flashed Skyn3t's Lightning BIOS to my LE version, disabled boost + up to 300% power limit.

Manged to get a 441Mhz overclock on the core with +88mV. The core voltage never goes over 1.190 when under load, got the memory at 6.4Ghz.

The stock clock is 889 for the Lightning LE and 980 for the Lightning.
3me.png


I get 9.8k on Firestrike with a 2500k at 4.6Ghz. :)
 
matty114 said:
Flashed Skyn3t's Lightning BIOS to my LE version, disabled boost + up to 300% power limit.

Manged to get a 441Mhz overclock on the core with +88mV. The core voltage never goes over 1.190 when under load, got the memory at 6.4Ghz.

The stock clock is 889 for the Lightning LE and 980 for the Lightning.
3me.png


I get 9.8k on Firestrike with a 2500k at 4.6Ghz. :)
Click to expand...

I don't surpose you or anyone else knows where i might be able to find a modded bios for a gigabyte windforce rev2
 
Can get 1289 (IIRC) with +63mv on my 780 GHZ think I'm gonna decide against messing about with a custom BIOS in the hope of another 3% performance but thats a nice result none the less.
 
Yeah me too.
I managed to squeeze 1297 from the PNY XLR8 OC, without modded BIOS and still doesn't seem like a huge* difference between this and the factory overclock of 1059


*yes 20% more power does show, however not to the point that I will be bothered atm. Maybe when Thief comes out.
 
Rroff said:
Can get 1289 (IIRC) with +63mv on my 780 GHZ think I'm gonna decide against messing about with a custom BIOS in the hope of another 3% performance but thats a nice result none the less.
Click to expand...

The real beauty of the custom bios is no boost and no throttles, I managed 1267 on stock and 1306 with custom :)
 
matty114 said:
http://www.overclock.net/t/1393791/official-nvidia-gtx-780-owners-club

Look through the Different versions of the BIOS for your card. You might need rev 3A or 4. Scroll down the list and see if the gigabyte ones match your bios version.
Click to expand...

Thanks, my cards can boost to around 1200 with a mild overclock but is abit unstable stable even with fans at max. My Ram overclocking is horrid though can't even get +70mhz stable! So when EK release FC blocks for the card (they are comming but no ETA) ill try this bios
 
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Panos said:
Yeah me too.
I managed to squeeze 1297 from the PNY XLR8 OC, without modded BIOS and still doesn't seem like a huge* difference between this and the factory overclock of 1059


*yes 20% more power does show, however not to the point that I will be bothered atm. Maybe when Thief comes out.
Click to expand...

I notice a bit of a difference in BF4 as it gives around 10% extra FPS - which is noticeable in some situations.

pgi947 said:
The real beauty of the custom bios is no boost and no throttles, I managed 1267 on stock and 1306 with custom :)
Click to expand...

The WF3 cooler means I don't have any problems with throttling, etc. :) plus the b1 silicon has some better power/heat efficiency which helps there to.
 
hi guy. I've got a zotac gtx 780 amp edition and I'm really happy with it. however, I've been trying to overclock it and I can barely get anything without getting artifacts.
I've got a fx8350@ 4.4ghz, a corsair cs 650m psu, 16gb of ram and a gigabyte 990fxa ud5 MB.
the temperatures never go above 60°
hope you can help me
 
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