Quote:
Originally Posted by skarface
So what if there is an issue during flashing? Will the card be toast like a mobo would be?
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Rule #1 for flashing bios on any device : ensure your pc is stable BEFORE flashing.
Rule #2 Do NOT flash your pc during thunderstorms or any other power outage likely situation.
I copied this from i4 memory's forum written by T M:
Share the tips and tweak for 4870X2 which can be a real ***** to tame.
My comments will mainly be regarding CF two cards.
Max clocks limit - CCC checks the digital signature of the BIOS vs the clocks being used, if mismatch then video card no longer functional
Default Bios max clocks limit = 800/1000
Master: Grab your own using GPU-Z
Slave: Grab your own using GPU-Z
Asus TOP Bios max clocks limit = 900/1000
Master:
http://www.mediafire.com/?48xsfx13bzx
Slave:
http://www.mediafire.com/?k2l1dhn3m3m
To beat the clock limit, you can simply uninstall CCC (leave the driver)
If you wish to change CF or settings in CCC, just reinstall with the cards flashed/set down again and then afterwards uninstall again
Works awesome and my cards both run at 830/1020 on air
Adjusting clocks:
CCC - you must adjust each "card" seperately, and it wont look like it works for most cards but it does
Flashing:
Grab your default BIOS's using GPU-Z and save them using 8 characters or less for filename
Open Radeon Bios Editor (RBE) and edit the clocks/volts/fan as you see fit.
Save modified file with a different file name and 8 or less characters.
Flash in DOS using ATIFlash:
Master:
ATIFlash -p 0 "BIOS0".rom
Slave:
ATIFlash -p 1 "BIOS1".rom
If you are flashing your default card to Asus TOP, you will need to add -f to your command before the -p to force the flash.
More to come later.
Link to OP
http://i4memory.com/f18/4870x2-overclocking-9747/
I recommend just flashing to the Asus TOP bios, they will leave you some headroom for overclocking and get you a little more familiar with the proccess with the least amount of hazard. I am using TOP bios on my 4870X2's without issue and if by chance you do have a problem you can always adjust your clocks back to stock or flash the cards back to stock.