What clock speed values should I set to overclock my powercolor 4850?

oh ya, i have heard of overheating issues with the 4850, but with some thermal paste(which brand do you guyz recommend) i think it's ok.

To know which clocks are best for your card, you have to do trial and error. That means increase the clocks a little bit, and then test for stability. Keep doing it until the card starts getting very hot (Above 70-80) or you start seeing artifacts.

As for thermal paste, I recommend Arctic Cooling MX-2. I have used it on my 4850 and it idles at 36-39-36. Max is around 60 with 50% fan only. I have put another fan in front of the card's fan to feed it cool air.

ok, change of plans, actually i'm getting a palit 512 mb 4850 card. What setting did you put. please label each setting and what it is for. on other sites i just se sumthing like (for example) 1234-567-890, and I dont understand what it is. and for thermal paste, how about the Thermalright Chill Factor2. How long does thermal paste last? And how do you apply it? and fps benchmarks for games like modernwarefare2?

GPu temperatures depend on your ambient temp, case air flow etc, so u wudn't want to set your clocks at the same speed as someone else's wthout testing stability first.

ok, but i'm new to overclocking, anyway, i've seen a powercolour 4870 512mb for a slightly higher price. It's get pretty good frame rates, so i probably wont be overclocking it. It was compared to the 280gtx and it outperformed it or equaled it in almost all the games. At higer resolutions, it outperformed it by quite a lot. Only in one game, the 280 gtx did consistent. NVIDIA is seriously expensive compared to ATI, cause for the similar performance, it costs WAYYYYYY more...thanks for the relies guyz

CCC has an OC program that works pretty well. I ran it and it set my 4850 at 690 (GPU) and 1190 (Memory). It bugged a little on Far Cry so I backed it down 20MHZ each and i seems stable now. Mine is the 1gig version of the XFX card. Prices on 4850,s should be dropping. Not sure you have ability, but newegg is good place to review cards and they have good prices paid 125.00 for 1GB. Sometimes they have them at 119,00 and less.
If you use the CCC Auto Tune be aware it takes a while to clock the card. I waited for about 45 minutes, then went to work. When I got home it was done. Also, some MB,s have a good OC utility. Have a ASRock that has a good utility. Not as good on my Gigabyte through.

^^ +1. the autotune is very nifty, and in fact I found it to be a little conservative. After getting an idea from Autotune, i pushed the clocks a little further.