Caporegime
Custom 7990 bios Testers needed**
1250/1700 max clocks available
250W max TDP (default is 179W with +20%)
Only need to use power limit for extreme overclocks now
Mild to light overclocks should work with 0% power limit
Boost part of the bios removed. Stock clock is 1000/1500 @1.15v
Card will no longer drop gpu usage and switch between clock states
50% power tune at standard
Fan profile remains unchanged
I need people to make sure the voltage is high enough. I'm running my card at 1.125v at 1000/1500 with no problems but not everyones will work on such low voltage.
Bios Download Link
http://www.sendspace.com/file/bd5292
Make sure your card is on bios switch 1. Do not flash to bios switch 2, thats the backup fail safe bios!! IMPORTANT!!
I have included a bios for the master card (Malta1.rom) and the slave card (Malta2.rom) in the download link. Its important you flash the correct one. Read the flashing instructions carefully and it will go smoothly.
Credits
Thanks to Kaboom for helping me with this.
1250/1700 max clocks available
250W max TDP (default is 179W with +20%)
Only need to use power limit for extreme overclocks now
Mild to light overclocks should work with 0% power limit
Boost part of the bios removed. Stock clock is 1000/1500 @1.15v
Card will no longer drop gpu usage and switch between clock states
50% power tune at standard
Fan profile remains unchanged
I need people to make sure the voltage is high enough. I'm running my card at 1.125v at 1000/1500 with no problems but not everyones will work on such low voltage.
Bios Download Link
http://www.sendspace.com/file/bd5292
Make sure your card is on bios switch 1. Do not flash to bios switch 2, thats the backup fail safe bios!! IMPORTANT!!
I have included a bios for the master card (Malta1.rom) and the slave card (Malta2.rom) in the download link. Its important you flash the correct one. Read the flashing instructions carefully and it will go smoothly.
Bios Flashing Instructions
You might want to write this down...
You need to create a bootable usb stick.
1. Download and install the USB disk format tool here.
2. Download the Windows98 system files here.
3. Create a folder called Win98boot on your desktop, extract the files from step 2 into the folder.
4. Plug in your usb stick. Launch the USB disk format tool. Copy these settings, then click format. You need to select quick format, tick dos startup and select the Win98 folder, like ive done below.
5. Click start, then ok and it should do it.
6. Download atiflash. Extract it onto the usb stick.
7. Download my 7990 bios. Extract it and cut and paste it into the usb stick.
8. If you've done everything correctly your usb stick folder contents should look like this. (except the bios should say Malta1.rom and Malta2.rom instead of HIS7950.rom) Do not worry if you have more or less files than what appears in the screenshot. As long as you have the bios file and atiflash thats all that matters. Windows 8 users might have extra files like in my screenshot.
9. Make sure the 7990 in your pc is switched onto bios 1.
10. Uninstall gpu drivers and any overclocking apps. Do not keep settings delete everything.
11. Restart your pc. Before you hear the beep keep tapping F8. Boot from the usb stick.
12. You should be at dos prompt. Type atiflash -i to get the adapter number for both your gpu's. Typically it will be 0 and 1, unless you have a gpu in a third pci-e slot. You need the adapter number to tell it which gpu to flash.
13. To flash gpu 1 (master 7990) type atiflash -p -f 0 Malta1.rom and hit enter.
Wait for it to finish. It will prompt you to restart but before we do that we need to flash the second gpu as well.
Now do the second gpu (slave 7990)
Type atiflash -p -f 1 Malta2.rom
Once that has completed and you get a notification saying you can restart press Ctrl+Alt+Delete to restart your pc.
All going well you should get a display and boot back into windows. Now you can reinstall fresh new drivers etc. Boost voltage and boost clock is disabled, your card thinks its a non boost card from now on in and you have the option to select 50% power setting as standard with every driver install.
If something goes wrong and you get no display from the cards after flashing the bios. Turn the pc off and flick both cards bios switch to position 2 to use the stock backup bios. Turn the pc back on and all will be ok.
Good luck.
You might want to write this down...
You need to create a bootable usb stick.
1. Download and install the USB disk format tool here.
2. Download the Windows98 system files here.
3. Create a folder called Win98boot on your desktop, extract the files from step 2 into the folder.
4. Plug in your usb stick. Launch the USB disk format tool. Copy these settings, then click format. You need to select quick format, tick dos startup and select the Win98 folder, like ive done below.
5. Click start, then ok and it should do it.
6. Download atiflash. Extract it onto the usb stick.
7. Download my 7990 bios. Extract it and cut and paste it into the usb stick.
8. If you've done everything correctly your usb stick folder contents should look like this. (except the bios should say Malta1.rom and Malta2.rom instead of HIS7950.rom) Do not worry if you have more or less files than what appears in the screenshot. As long as you have the bios file and atiflash thats all that matters. Windows 8 users might have extra files like in my screenshot.
9. Make sure the 7990 in your pc is switched onto bios 1.
10. Uninstall gpu drivers and any overclocking apps. Do not keep settings delete everything.
11. Restart your pc. Before you hear the beep keep tapping F8. Boot from the usb stick.
12. You should be at dos prompt. Type atiflash -i to get the adapter number for both your gpu's. Typically it will be 0 and 1, unless you have a gpu in a third pci-e slot. You need the adapter number to tell it which gpu to flash.
13. To flash gpu 1 (master 7990) type atiflash -p -f 0 Malta1.rom and hit enter.
Wait for it to finish. It will prompt you to restart but before we do that we need to flash the second gpu as well.
Now do the second gpu (slave 7990)
Type atiflash -p -f 1 Malta2.rom
Once that has completed and you get a notification saying you can restart press Ctrl+Alt+Delete to restart your pc.
All going well you should get a display and boot back into windows. Now you can reinstall fresh new drivers etc. Boost voltage and boost clock is disabled, your card thinks its a non boost card from now on in and you have the option to select 50% power setting as standard with every driver install.
If something goes wrong and you get no display from the cards after flashing the bios. Turn the pc off and flick both cards bios switch to position 2 to use the stock backup bios. Turn the pc back on and all will be ok.
Good luck.
Credits
Thanks to Kaboom for helping me with this.
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