Recommended overclock for 5850

[Rimfire]

Just ordered a new system with an HIS Radeon 5850 i-cooler V, which I'm really excited about!!
Didnt think the 5870 was worth the extra dosh and thought i could overclock the i-cooler to the same level as a 5870 anyway in MSI afterburner. What settings do you guys recommend for stable operation? I've heard the i-cooler can clock really well without getting too hot, I dont wanna go chasing benchmarks or anything, just boost the performance a little higher!

 

[mrteabag]

With my 5770 there was auto tune which found the best overclock without it getting too hot iirc

 

[Mojo]

The 5850s always clock like a *******! With 5850s I usually start at 850mhz (5870 stock clocks), test with furmark, and move up in about 20mhz jumps until it starts artifacting, downclock by about 10mhz and it's good. Same for the memory, although I usually go in larger jumps with the memory. The shader clocks are locked to the core clock, so you don't have to worry about them.

Decent clocking 5850s are hitting 1ghz, and you'll struggle not to reach 850mhz with them, they are great clocking cards!

 

[mart280]

I have the same card, no voltage control but I went from 725/1000 to 875/1250 stable, the heatsink and fan do a good job as well, I have never seen it go above 62 degrees under load.

 

[Dark_Angel]

OVER 9000!!!

Actually, the rule of thumb is most things can go 10 percent more than their regular clocks (cards I'm talking about here) - but it's completely down to luck of the draw, the heat of your case, voltages, even your motherboard can play a part in it at times.

Only thing I'd say is just keep an eye on temp.... raise the clocks a bit, play, until you get to the point you get artifacting / crashes then back it back down.