4850 @ 1.158 volts

[tigersty1e]

What type of clocks can I expect to hit with the 4850 @ 1.2 volts?

I'm already at the limit of ~710 and want to increase the clocks.

 

[dflynchimp]

What type of clocks can I expect to hit with the 4850 @ 1.2 volts?

I'm already at the limit of ~710 and want to increase the clocks.

what kind of cooling are you using on that card?

 

[fffblackmage]

I got to about 800MHz on my 4830 with approx. 1.3V, IIRC. Using only the stock 3rd party HS/F MSI provided.

Power requirements on the 4850 is certain to be much higher due to the number of SP's, so heat is probably going to be more of an issue, seeing how I'm already hitting the thermal limits of my 4830.

Basically, even if it's possible to OC your 4850 past 710MHz, you'll likely require better cooling.

 

[Sentry2]

I had a pair of Sapphire 512MB 4850's @ 950MHz(vmod/water). I don't remember what I was able to get at 1.2v...but if I had to guess I'd say that you could probably make it to ~750MHz depending on your card. If it has a single slot cooler though I don't know if I would push it too much...

 

[tigersty1e]

I modded it to get 1.242 volts and was able to push the core to 770.

Load temps were 57C with a duorb. I want to hit at least 800 core. I'm going to try to hit ~1.3 volts.

How safe it is to run a 4850 at 1.3 volts 800 core 24/7? I know this question is hard to answer, but if I can run this for 2 years no problem I'll be set.