The guy is a liar and thief.
His sole contribution to the rom is removing our name and putting his in.
I can even prove that. It was in fact a GTX770 customer of his who wrote showing me screenshots with my name in System Profiler of his cards. The card was glitchy and crashed a lot so they sent it back when slippery tongue sent him a different one where he had finally figured out how to put his name in system profiler.
If you asked these guys about how the EFI works, they wouldn't have a clue.
When you support us you support future choices. When you support the copy & paste code kiddies, you support them buying new video games.
Here is the email from the customer he screwed over:
Dear macvidcards,
Thanks for your reply. Interesting theory about the 680 ROM -- the card doesn't even get the performance of a 680! Here's the item # 171343338564
I've already sent this back to him to be re-flashed because he said Nvidia kept changing drivers and they didn't work with Mavericks so his firmware needed to be modified. Interestingly, when he first sent it to me the system profiler showed MacVidCards as the ROM revision (see 4th picture). But unfortunately whatever he did didn't improve performance.
The seller has satisfied customers, so not sure why this card is having trouble with my system and the others seem to be happy.
BTW, I was able to stop the 2 displays from showing up (when only 1 was connected) by selecting use OSX default driver instead of NVidea web driver (v . But unfortunately that didn't improve performance.
Interestingly, the 770 does get decent results in GPUTest 0.7.0 where my 5770 gets dismal ones. But for the software I actually use (Final Cut, Compressor, Motion and Davinci Resolve) the 770 is seldom much better and often worse than my old 5770.
As much as I don't want to turn to buyer protection, if I need to go that route, I'd need a good argument in order to make it work in my favor. The seller's position is that the card is working which it is but my position is that it's not performing as expected and as it should. He also says that certain applications and benchmarks don't recognize the card (ie cinebench).
How could we determine if your hypothesis about the ROM flashing shortcut is correct or otherwise present a convincing case so Ebay would find in my favor and allow me to use buyer protection over the sellers anticipated objections?
Any advice you could provide would be greatly appreciated. I've include some screenshots I thought might be relevant.
Thanks!