Any other benefit to flashing the GPU

So I have been running a stock PC version of the EVGA Nvidia GTX 980 4GB SC GPU on my 5,1 MacPro with no issues (on the latest 10.10.3 and latest Nvidia webdriver). I've been contemplating getting it flashed by MacVidCards, but after researching and looking at his site, I am unsure. It seems that the sole main benefit at this point is getting the boot screen.

All the other benefits listed are already in play:
• PCIe 2.0 speeds are working fine
• Output ports are working fine
• CUDA is...

Any other benefit to flashing the GPU