Overclocking unstable in Crysis with 4850?

[Biglunn]

Although I can get my 4850 up to 690/1100 with autotune stable, its impossible to run Crysis Demo with this overclock. In fact, it only seems to run properly (lock up free) when clocks are at standard default. Everything else seems to work flawlessly at OCd. Do others have this experience?

 

[krooton]

I don't know, yet , but it's no biggy, Crysis is an average game at best.

 

[gurusan]

that's odd. What is your PCI-E clock set to? I find i get better clocks with this card when set to 110mhz+

 

[kylew]

Crysis seems to act odd with overclocked GPUs sometimes. I've had rock solid overclocks that worked fine with everything bar crysis.

It would crash if it didn't like the clock. I'm thinking the game/graphics cards just don't always like it when the GPU has been overclocked.

 

[Biglunn]

I think my PCIe clock is probably at default (100). Ill try bumping it up later.

Is rather strange it locks up in Crysis (yup, average game, hence why I only have the demo for testing purposes) yet everything else works OK. Was just wondering if this was a common issue. I Firefly & Deep Freeze (with 2xAA @ 1680x1050) several times at overclocked - these tests for me usually find a suspect overclock - and went through flawlessly

Oddly, even a mild OC seems to be unstable in Crysis for me

 

[gurusan]

Sounds like it could be an issue with crysis then and not your system

 

[KaneStatton]

Pretty sure when i used to have a 8400gs Crysis would reset the card back to default clocks, it was highly overclocked though

 

[Jakus]

Although I can get my 4850 up to 690/1100 with autotune stable, its impossible to run Crysis Demo with this overclock. In fact, it only seems to run properly (lock up free) when clocks are at standard default. Everything else seems to work flawlessly at OCd. Do others have this experience?

DON'T trust auto tune
Max for You card will be nearer 640/1040...sorry and all that