Change Device ID from Sapphire Radeon 6770 to 5770

[nguyeda]

All,

I'm trying to install OS X Snow Leopard or Lion on my new PC build. Regrefully, I didn't research the graphic card and I know the Sapphire Radeon 6770 will not work on my build. I've read that if I change the device ID to the 5770 that it will work, so I want to attempt that.

I'd rather not go through the trouble of returning and buying the 5770 if it isn't an complicated process.

I can't find anywhere how to do that, I've looked for at least 24 hours. I don't want to do any other BIOS changes. Just change the device ID only. How do I do that?

Here are my build specs:

GIGABYTE GA-Z68XP-UD3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

SAPPHIRE Vapor-X 100328VXL Radeon HD 6770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card

Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor BX80623I52500K

COOLER MASTER Silent Pro M600 RS-600-AMBA-D3 600W ATX12V V2.3 SLI Certified CrossFire Ready 80 PLUS Bronze Certified Modular Active PFC Power Supply

G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBRL

LG CD/DVD Burner Black SATA Model GH22NS70 OEM

COOLER MASTER Elite 430 RC-430-KWN1 Black Steel / Plastic Computer Case

Rosewill RNX-N300X PCI Wireless Adapter

 

[digibucc]

it looks like rbe has a simple method for changing it:
http://www.techpowerup.com/rbe/

under sub vendor id/ video card id -> video card.

 

[nguyeda]

Thanks. Is it really as easy as changing those 2 fields and clicking "load bios"?

or do I have to go thorugh all these steps?

http://www.techpowerup.com/articles/overclocking/vidcard/154

 

[digibucc]

there's not as many steps as you think. most are exclusive.

1) 2.3 (get your current bios, back it up.)
2) 3.1 (then open it in RBE)
3) 3.2 (then change the "video card" dropdown. i think subvendor should stay)
4) 3.8 (save it)
5) 4 (flash it)

if only everything else was so easy MAKE SURE YOU BACK UP YOUR BIOS

 

[nguyeda]

I'll try! Thanks!