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ATI 5870 flash to bypass 900/1300 limit

Martini1991

Martini1991

Martini1991

Caporegime
Joined
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Dormanstown.
Ok, this works. Just follow the guide, written in my own words, albiet I take no credit for this.

Here's a picture of my flashed Sapphire 5870 to an Asus
Pic.png


With the Asus BIOS, I'm able to use just the MSI tool to increase clocks over 900/1300.. I've heard that AMD GPU Tool will mess with the memory timings, so I'd advise NOT to use it.

Here is the ASUS BIOS
http://rapidshare.com/files/288531683/Asus.rom

Here's the latest ATIflash

http://www.techpowerup.com/downloads/1650/ATIFlash_3.75.html

Here's the tool to format a USB flash drive
http://www.techpowerup.com/forums/attachment.php?attachmentid=18807&d=1222699942

Here's the bootfiles I used
http://www.4shared.com/file/43544416/39060a9e/HPUSBFW_BOOTFILES.html?s=1 (Extract them, then make a folder called BOOTFILES, stick the extracted files into the folder)

Plug in the USB drive that you want to use.

Install and run HP USB Disk Storage Format Tool.
Select the USB Drive. In the "File system" drop down box, pick FAT32. Tick "Quick Format". Tick "Create a DOS startup disk, using DOS system files located at and click the "..." and direct it to the BOOTFILES folder you made.
Click start.

Once that's done, copy the ATI Flash and ASUS BIOS into the USB drive.

Restart your PC and boot from the USB Flash drive.

Once it's booted in type
atiflash -f -p 0 asus.rom (If you're not using crossfire)

If you're using crossfire, I'd suggest you flash each card individually (For people like Virus). More so that I don't know how to flash more than one card at once :p

Good luck
 
Last edited:
kylew said:
ATi flash is used in a dos environment isn't it? It'll have nothing to do with whether you're using 64 bit or not.

If that's what you mean?

I've flashed both my 4850s and I've been on 64 bit for quite some time now.
Click to expand...

Yeah, I confused it, I've rewritten what I posted. :D
 
Theguy said:
A more user friendly way of booting into dos by the way, would be by using unetbootin - from within that program it can download onto the usb freedos. without the need for the bootfiles and ect ect.
Click to expand...

I'm new to this. First time I've flashed a graphics card, so I'm not up to date with all the tips and tricks lol.
 
wolvers69 said:
So ATI actually put something in the stock bios that puts a limit on the clocks you can set with software?

Is there a bios of this type floating around for the 5850 yet?
Click to expand...

No word on the 5850 yet.. And some vendors of ATI cards don't have the limit, hence the need for the ASUS BIOS..

However tools can bypass this limit, I wouldn't risk it.
 
cainer said:
ive got 2 5870 vapor's, i think by the time i need to OC them much newer cards will be available. so il leave em as they intended :)
Click to expand...

OC'ing will allow for 15-20% increase in performance, as upping the GPU core seems to be pretty linear.
So, around 30% increase with your crossfire.
 
Sgt_Pepper said:
2 quick questions before i try my hand at this.

Does the bios update work on all 5870's

Will it help stop my card going into Powerplay low power mode.
Click to expand...

1.) All that use the normal reference PCB, so I think all of the current 5870's.
2.) You mean 137/300MHZ when using dual screen?. Eyefinity overclocked doesn't flicker for me at 137/300MHZ at 5760x1080.
 
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