Normal X850XT OC???

[PaiN]

I just got a Sapphire X850XT, I was planning to liquid cool it.....but the KL-180 block I have wouldn't fit properly, so I had to go back the stock HSF.
I havent played with the card's clocks to much, kind of picked 540/1200 out of the blue, its been perfectly stable there.....
Today was trying out ATI Utilities.....I started with ATItool I ran the built-in automatic clocking, for the hell of it....I watched as it raised the core higher & higher finally at 600mhz I killed it thinking "this app. is broken".....
Later on I installed ATI's own Catalyst Control Center...I decided to give its auto OC utility a try. Hmmm..I watched it start to pump up the core speed( I was thinking it would stop around 540-550)....well this time I didn't stop it at 600 :) ...I let it finish and that it did at 621! Is this a normal or typical X850 OC?
I did some testing....hell if it didn't run at those speeds..wth!!! I wasn't going to push it at that speed on stock air cooling but it ran :cool:

btw: I now have a KL GPU-180 water block with swivel nozzles(so it can seat right) coming....I see good things ahead :D

[Riptide]

No way, that's highly lucky if it's stable there. Usually you need more voltage to get that high, which requires a mod.

I don't o/c my PE any more. It ran stable at 549/591 for six months and then out of the blue it decided it couldn't handle that overclock any more. Started locking up hard. Took it back to stock and it's been fine since.

[PaiN]

So it is huge.....I would be not comfortable with it that high, water or not, plus its not needed (Hey, I'm the guy that just gave up dual Ultras in SLI because it was "too much" ). Its nice to have that kind of headroom for brenching but during everyday use I'll likely just go to PE speeds 540/1180
.

[keith33]

Wow, that is one awesome overclock, I can't get my X850 XT PE past 580 without a voltage mod. Congrats!

[Clevor]

There was a thread back when about what is considered a valid overclock. Just seeing if it passes all four Marks is not enough. One criteria to use is run the ATI Tool artifact finder for a minimum of 30' clean. Not easy to do. I can bench everything in 3D just hunky-dory, but artifacts show up in 5', or 10', or 15', or 25'! Had to drop it way down to make it 30' clean.

Also I find the Far Cry demo at 1600x1200x32, 4xFSAA, 16xAniso and Ultra detail ;) is the best way to stress the ram. Run the demo at least twice to heat up the card, and look for tiny white spots on the black shadow of the machine gun. I can bench 3D for days on end at 1200 on the ram (stock cooling), but spots show up here that only go away when I drop the ram clock to 1196.

[jAkUp]

Did you turn off Overdrive? It could be throttling the card since its not a stable overclock