R9 285 only 75% of what the charts say it should? Bottleneck?

Nargos

Honorable
Dec 1, 2015
4
0
10,510
Hi I have checked how my system runs against the GPU charts on the website and I am only getting about 65% of what it says I should be in Tomb Raider on Ultimate at 1080. I have checked the CPU load under test (it did not even throttle the CPU to maximum once) and it is fine and the memory load is also fine (11GB free). So I am at a bit of a loss as to what to do next. Can anyone help. btw frame rate targeting is off.

Category My PC
CPU: FX-8530 (OC a bit)
Memory: 16GB DDR3 1734mhz
GPU: Sapphire R9 285
mobo: M5A97 r2.0
FPS 55 Av

Category TH's PC
CPU: Core i7-4930K
Memory: 32GB DDR3 2133
GPU: AMD Radeon R9 285 Reference 2GB
mobo: Asus Rampage IV Black Edition
FPS 86 Av

 

Tam99

Reputable
Nov 16, 2015
63
0
4,660
I have an i5-4590 and R9 290 but I can only get 71 FPS average so I really doubt R9 285 can hit 86 FPS average. It'd be great if you can provide the website you're referencing from.