View Full Version : Can't help but think I got a good 6800nu.

03-13-05, 09:36 AM
Bought a used Gigabyte 6800 that the seller said would unlock fine to 16/6, but one of the capacitors had been knocked off of the board. I bought it and soldered another capacitor on, unlocked it and it worked great. Made a 1.4v version of the bios and flashed it and it runs stable at 435/910 w/ all the pipes unlocked. That seems very high on the core for a vanilla 6800. Curious if anyone else getting much over 400 on 6800 cores?

I can only overclock my core via bios - so my 435 wasn't real. Currently flashed to 400 and it is happy.

03-13-05, 09:51 AM
With a 1.4v bios mod most 6800nu(vanilla) cards should be able to do 400+ on the core with ease.

Congrats on the card unlocking tho :cool:

03-13-05, 09:52 AM
Well enjoy it whil it lasts cuz you may kill that card soon. A lot of forum members have killed their 6800 non ultra and GT's by flashing the bios to 1.4v

03-13-05, 09:53 AM
Just don't be surprised if the volt mod breaks your card after a few weeks/months as has happened to many, many people.

03-13-05, 09:55 AM
might be going back to 1.2v asap. the card is water cooled and the core doesn't get much over 30c under load. wonder if heat is a big issue in card dying.

03-13-05, 09:59 AM
The card will be fine with 1.4......but I wouldn’t use it for a long term thing, just to benchmark etc then put it back to normal.

If you are lucky, or willing to take the risk to push it more you can give it 1.5v for a test....( my card was ;) ) with 1.5v was fine for benchmarking... but after I was done back to stock V.

I was able to benchmark @ 445 core with 1.5v, and the max I could get it to ( not bechmark stable ) was @ 460.

My advice, don’t risk killing your card........I took the risk and was lucky not to kill my 6800... It is up to you really.

Enjoy this random excess crap :afro:


03-13-05, 10:10 AM
f-ck it, back to 1.2v. still seems to be happy at 430 - short test tho.

03-13-05, 10:27 AM
That is the best thing to do IMO so you don't loose you card ,and it seems you did not need 1.4v to get a good overclock.

03-13-05, 01:06 PM
f-ck it, back to 1.2v. still seems to be happy at 430 - short test tho.

Good going. :)
If u can do 400+ at 1.2 be very happy. ;)

03-13-05, 01:30 PM
Well without a bios vmod, my 6800NU can do about 395/840 max.

03-13-05, 01:54 PM
Well without a bios vmod, my 6800NU can do about 395/840 max.
It's different for me. My leadtek 6800 could only be pushed to around 380 before lock ups for the core but the memory goes all the way to 885.

03-13-05, 01:55 PM
if you don't mind me asking how much did you pay for it?

03-13-05, 03:25 PM
Paid $200 for the card.

I have an odd issue where I can't oc the core using Riva Tuner (or coolbits because it always fails the test no matter the core speed) - the slider works and shows the core freq. I choose, but checking hardware shows that it doesn't actually change, and benchmarks confirm this. The memory oc works. I have the bios flashed to 400 core and that is where it stays no matter what. turns out my 430 wasn't real.