Sapphire HD4850 Bios Modded, Core upper Limit to 850Mhz in CCC!

[GAR]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v

[HousERaT]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v

Does the bios allow for the extended range in CCC? Got a screenshot?

[jimmyz]

Does the bios allow for the extended range in CCC? Got a screenshot?

I have a working unlocked bios, right now i have a 4870 and a 4850 bios both with the limits raised. I will need some testing (flashing back to stock and reflashing etc). so far it works fine in XP Pro and Vista 64bit ultimate. so stay tuned.

as to the voltage, the bios can only raise 4850's to around 1.21 the controllers physical limit, IMO not worth the effort. there are many pages in the volt mod thread to show how to get steady reliable voltage as high as 1.6+. and also several pencil mods to get a nice bump over stock if soldering is not your thing.

[IMG][/IMG]

[leonarderman]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v

Well! I'm sorry! I have test Hard overclocked Bios with HD4850 + Zalman VF900, it work good, but I don't care about your HD4850.

I think you should try light Overclocked Bios to get another result! Good luck!