Could anyone advise me on what to upgrade on this system please, Attached i have put some screenshots with rivatuner stats in the corner to show you cpu/gpu/ram usage.. CPU seems to be fine but GPU is at 100%, Im not even close to using the 16gb 2400mhz ram either. I dont think i could bottleneck a GPU with my Processor but seing as its 2nd gen could this be an issue? Im thinking about maybe a 980ti? or perhaps just a 980.
Thanks for any advice.
System:
CPU: Intel Core i7 2600 3.4ghz
CPU cooler:
Motherboard: ASRock Fatal1ty-M professional Z77
Memory: 16GB DDR3 corsair vengance pro @2133mhz
GPU: MSI R9 290 4GB
PSU: SuperFlower Golden Green HX 550W "80 Plus Gold"
Monitor: Samsung 4k 28" U28D590D
Everything on ultra AA on at 1080p
Everything on ultra AA off at 1440p
Everything on ultra AA off at 2160p
Everything on ultra AA on at 2160p
Thanks for any advice.
System:
CPU: Intel Core i7 2600 3.4ghz
CPU cooler:
Motherboard: ASRock Fatal1ty-M professional Z77
Memory: 16GB DDR3 corsair vengance pro @2133mhz
GPU: MSI R9 290 4GB
PSU: SuperFlower Golden Green HX 550W "80 Plus Gold"
Monitor: Samsung 4k 28" U28D590D
Everything on ultra AA on at 1080p

Everything on ultra AA off at 1440p
Everything on ultra AA off at 2160p
Everything on ultra AA on at 2160p