4870 ASUS TOP BIOS (upto 900MHz in CCC)

[M-XXXX]

In your Command Prompt window it shows you are in the directory,

C:\DOCUME~1\M-XXXX>

From here type,

CD Flash

Now you should be in the proper directory and can use Atiflash,

atiflash -p -f 0 4870.rom

Having said all this the flash should go OK but atiflash should really only be used in true DOS, not the Command Prompt way that you are attempting.

Thank you for all your help. In the end I flashed from DOS (thank you for advice) I had some problems with booting from USB, so I asked for instructions in windows flashing). In the end I booted from USB and the think was done in 10s!

[praesto]

Has anyone changed the core voltage through bios flashing? I think you can squeeze a bit more voltage out by bios modding the 4850, is the same thing possible with a 4870? Either way, what are your maximum core overclocks with bios volt mod/ no mod?

[korrupted]

I ran my flash from an Administrator level command prompt in Vista x64, with UAC turned off, if anyone thinks that may be related to why most have issues with usint atiwinflash.exe. Just tossing that out.

[xMrBunglex]

Has anyone changed the core voltage through bios flashing? I think you can squeeze a bit more voltage out by bios modding the 4850, is the same thing possible with a 4870? Either way, what are your maximum core overclocks with bios volt mod/ no mod?

i think 1.263 vGPU is as high as you can go through BIOS but i'm not sure. i'd love to be corrected by anyone who knows for sure.

i'm not game stable with the default settings on the TOP BIOS. i've lowered the clocks on both my cards to 750/900 while i contemplate what to do next. i really don't like the idea of volt modding my cards because i know i'll end up selling them within a year.

[xMrBunglex]

i'm not game stable with the default settings on the TOP BIOS. i've lowered the clocks on both my cards to 750/900 while i contemplate what to do next.

an update for those that are curious. i'm stable with the TOP BIOS if i force my fanspeed to 65%. i've confirmed that my problem is with my top card only and it's being caused by heat. my case has a 200mm side fan with a big center hub that lines up perfectly with my top card, so i think there is a dead spot there as far as airflow is concerned. i also have only a quarter inch of space between my two video cards due to my motherboard's layout.

i might just get a pair of Acceleros and see if i can make them work for me.