Worth it to switch badly OC'ing 4770k to 5775c?

I will have $600 to spend real soon. Now I want to know would it be worth it to get a Core i7 5775c with some of it? My 4770K only clocks to 4GHz stable. Anything higher gets me occasional blue screens. The 4770K might be hard to sell too though. I delidded it and nicked the pcb a little. Not enough to hurt anything but it looks bad still.

GRID: Autosport on GTX 980
Core i7 6700K at 4.8GHz scores 173FPS
Core i7 5775C at 3.3GHz scores 176FPS

Alien Isolation on GTX 980
Core i7 6700K at 4.8GHz scores 178FPS
Core i7 5775C at 3.3GHz scores 180FPS

Total War: Attila on GTX 980
Core i7 6700K at 4.8GHz scores 35FPS
Core i7 5775C at 3.3GHz scores 35FPS

Grand Theft Auto V on GTX 980
Core i7 6700K at 4.8GHz scores 73FPS
Core i7 5775C at 3.3GHz scores 74FPS

Shadow of Mordor on GTX 980
Core i7 6700K at 4.8GHz scores 99FPS
Core i7 5775C at 3.3GHz scores 100FPS

It beats the Core i7 6700K in gaming even with the 6700K at 4.8GHz. Amazing I think and it does it consuming a lot less power too. I got my numbers from anandtech. I think I want this CPU even though I might not technically need it. Would it be worth it to do this? I just don't know myself. At the settings I play at I think my GPU is the bottleneck anyway.
 
If those numbers are accurate it's a definite sign of a gpu bottleneck. Even given the additional l4 cache of broadwell there's no way a cpu one release behind and 1.5ghz slower is 'faster'. The tiny edge is within margin of error and the speeds are so vastly different it's an obvious gpu limitation. What those tell me is your 4770k likely performs about identical as well with that gpu.

http://www.anandtech.com/show/9483/intel-skylake-review-6700k-6600k-ddr4-ddr3-ipc-6th-generation/16

You can see your 4770k is performing within the margin of error along with the other i7's.

The i5 4690 and i5 5675c give nearly identical results in almost all those gaming tests vs the i7 4770k, 5775c etc. also.
http://www.anandtech.com/show/9320/intel-broadwell-review-i7-5775c-i5-5675c/9
 
I think I'll just keep my 4770K. I just don't know what to spend the money on. Usually I buy computer parts when I have exta money. You're right Supahos those benchmarks do look similar on a 3770K. I guess I don't really have anything to gain by switching. I wanna spend the money on something good not waste it on something that won't make a bit of difference.
 


Save some more, then get a Asus ROG SWIFT PG348Q and pair it with a 1070 :)