I got myself a Mac Pro 1,1 (2.66 Quad core) for $250 (prices in NZ$), upgraded to two X5365 3.0GHz Quad cores (so now has 8 cores) for $130, added a Samsung 850 Evo 500GB SSD for $300 using a NewTech Adaptadrive 2.5" to 3.5" bracket for $20 so it fits in one of my HD sleds (Read 275, Write 285 MB/s - wow!). The system is sooooo much faster than my iMac Early 2009, even though it's 3 years older - the MP is now approaching 10 years! Geek bench score (11K+) is incredibly faster than the iMac (score of ~4K). Boots in about 25 seconds. I also got an ATI Radeon HD 5770 (PC version) for $50 to replace the ATI Radeon HD 4870 that my MP came with. I've been patiently reading an awful lot about flashing my 5770 to a Mac EFI Rom thingy, but just don't have it right in my head how I should do this (a bit bamboozled after reading so much, and doing the other upgrades etc). The 5770 didn't come with power cables, so I've purchased 3 on eBay and waiting for these to arrive (I know I only need one, but it gives me a backup if my dual-cable in my 4870 craps out). I don't own a copy of Windows (any version) so not sure how I can install it on a partition so I can flash the 5770. Questions: How should I go about flashing my 5770 so it thinks it's a Mac version and so I get the boot screen? I'm just not sure which method, whose technique I should use, what else I need (hardware, software etc). And is it going to be worth it anyway (going from a 4870 to a 5770)? I do want to migrate away from the iMac, and so am thinking of going for a 4K display. So should I ditch the thought of upgrading the 5770 firmware in favour of getting a 7950/7970 instead (or other 4K capable graphics cards compatible wth my MP 1,1)?