Overclockin an X850 Pro.

[AmongTheChosenX]

Ideas? This card can use a good overclock. it doesn't run F.E.A.R or Quake too well. I can't imagine how bad its gunna run stalker.

 

[TurboGLH]

For a pro I'd start by unlocking the extra four pipes first (if the card has the purple VIVO connector it should be unlockable). That was the biggest single bump in performance on my card. A GOOD air or a bit of mild water to get it up to between 580/580 and 600/600 depending on ambient. The OC to 580 added about as much performance as the unlock did in my case.

I'll try and remember the exact info you need to check in ATI tools to verify that the card unlocks, and if it does you can send me a dump of your bios and I'll mod it for you.

Ok, it's been a while so I had to look the the info up.

Install ATI tools.
Open the program, hold shift and click settings.
At the bottom of the list there will be four more values that were not there before.

CONFIG_DIE_FUSES 0xFFFFFFFF
CONFIG_SUBSTRATE_FUSES 0xFFFFFF9F
CONFIG_ROM_FUSES 0x861
GB_PIPE_SELECT 0x2724

The positions in red need to have a value of F.

Now use ATI tools to dump the bios, save it and PM me for me email addy.

You can use the modded flashrom tool from techpowerup to flash the card from a floppy or jump drive.

http://www.techpowerup.com/articles/100/images/flashrom16p.zip

If you need help with the flash, here's a way better guide than I could type out.

http://www.techpowerup.com/articles/overclocking/vidcard/34

 

[AmongTheChosenX]

damnit dude the 2 red "F"'s you pointed out are E's in ATI tools on my card!

whats this mean?

PS: its a sapphire card.

 

[TurboGLH]

damnit dude the 2 red "F"'s you pointed out are E's in ATI tools on my card!

whats this mean?

PS: its a sapphire card.

Means that it can't be unlocked to enable all 16 pipelines.

As far as OCing, I was only able to get an extra 20mhz or so on the core and mem with the stock HS even with the fan set to go 100% at 30c. A better cooler may or may not get you farther.

 

[AmongTheChosenX]

so i'm screwed basically.

ah crap.


is tehre any way I can hack something in there to get the flash to work? anything?