[Request] Gigabyte UD3 X99 (GA-X99-UD3) 4G Decoding

Howdy!
I have been rocking this mobo for a while and wanna finally get some Resizable Bar action going on, however I need to get 4G decoding rocking on the board first before I can and have no idea where to start especially for an X99 board… I opened the bios in AMIDE and couldn’t find much mention of the words 4G or decoding. Anyone care to help getting this bad boy to the 22nd century?
Bonus points if you include the Resizable bar DXE driver
Attached is the current bios, any help is appreciated.
X99UD3.F22.zip (6.6 MB)

Hello @darkjake,

Adding Above 4GB decode might not be an option.

If you add the ReBAR DXE to the file, you can probably get a 1GB BAR or maybe 2GB.

Are you trying to add this for a GPU?

Best regards,

-68k

Ah thats a shame @68k-dude , yeah mate I have recently purchased a reasonable GPU for once but I can’t utilise it properly without REBAR.
Would there be any downsides to enabling REBAR without 4G Decoding enabled other then “not the full experience” ?

Hello @darkjake ,

None that I have noticed.

I would do the mod, then set the size to 256MB, 512MB, 1GB and if it works, 2GB. You might be able to get 2BG BAR or you might get a corrupted screen on boot. If at any point it fails to boot, clear the CMOS and set the last value that worked. You can test game performance at each size to see if there is a benefit in going higher.

https://winraid.level1techs.com/t/release-resizable-bar-dxe-driver/89534

Happy to help If you get stuck.

Best regards,

-68k