What does that red digital display do?
Very nice! Those 780's do look the nuts. Really liking that case too, got me thinking of upgrading my 300r now!
Your 300r is a very nice case. You can have more fans than me. I was actually thinking a might need to get a mesh to replace the window on mine with but they're unavailable everywhere.

Don't think some Star Citizen would like lowly quad cores any...Is it time to upgrade yet? Should I?
Dreaded Error code 43. Reinstalling drivers didn’t work and only one of my 3 monitors work in safe mode.If it was still doing what you need performance wise, it's an easy fix... could easily get a comparable performance card for £30-50.
Although at this point you'd also get huge gains from a cheap-ish AM4 platform upgrade (with DDR4 prices being the biggest factor)