I read that article, but I had a few questions. Does that also work with the pci-express version of the card? Would my temps be ok? When its 65 F in my room, and I put the graphics card fan on 100%, it runs around 50C. Would unlocking the xt stuff make it run too hot? And I have an Abit BIOS. If I wanted to do it, could I flash with the gigabyte bios without problems?
You would need to choose a BIOS flash that is designated PCI-E, they are clearly labled, also it only successfully works with the VIVO cards, its very important to use ATI Tool and make a backup of your BIOS before you even consider flashing your video card.
Make sure you fully understand what you're doing and getting yourself into before you even attempt to do anything, its best to use ATI tool and see what your Core/Mem stable settings are before you decide which BIOS to flash with, I flashed my X850 Pro to X850 Pro XT PE and successfully opened the other 4 pipelines, but I'm also water cooling, if you're going to stay aircooling flash with a BIOS that your card can comfortably handle with air cooling.
Note: When you open the additional 4 pipelines the card temp will increase, you can monitor it with ATI Tool, obviously the cooler the GPU the longer it will last you, I don't actually know the kill temp of the GPU but I would say 50c max would comfortably still be in the safe zone and if it goes over that under load I would get concerned.
As long as you've made a backup of your original BIOS using ATI Tool you can reflash back if something doesn't go right, but you would need your original BIOS .bin file and the modified Flashrom on the BIOS restore floppy disk.
As I've already warned you, fully educate yourself on this process before you actually do it, since I've successfully flashed mine, feel free to PM me if you don't get all your questions answered from the article.
http://www.techpowerup.com/articles/overclocking/vidcard/100
http://www.techpowerup.com/bios/