What's the bottleneck in this PC?

[magdi_alafifi]

hello,
i'm wondering what holds games frame-rate and Photoshop performance back in my PC

Photoshop performance seems quite slow in 30 MB files or more although when i go back to windows 8 task manager and check it ram barely uses 49% and CPU doesn't usually exceed 30-40% .. this also happens in video games.. they do -most of them- work in full settings, yet the frame rate keeps at 30-40 at Crysis 2 for example -most games goes around that or a little more- .. now it's still comfortable to play like that , but i cant figure out which part is causing the frame-rate to be held low like that as take manager shows the there is still lots space left .. i suspect the Hard drive.. but i'm not sure...

here's the PC specifications....
Operating System: Windows 8 Pro 64-bit (6.2, Build 9200)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: H55M-D2H
BIOS: Award Modular BIOS v6.00PG
Processor : Intel(R) Core(TM) i5 CPU 760 @ 2.80GHz (4 CPUs), ~2.8GHz
Memory: 8192MB RAM DDR3 1333MHz
Available OS Memory: 8152M RAM
Hard Disk: 1.5T WD 7200 rpm
Graphic Card: ATI Radean 6850 DDR5 250bit
DirectX Version: DirectX 11

Display :-

Card name: Radeon HD 6800 Series
Manufacturer: ATI Technologies Inc.
Chip type: ATI display adapter (0x6739)
DAC type: Internal DAC(400MHz)
Device Type: Full Device
approx. Total Memory 4068 MB
Current Display Device : 1920 x 1080 (32 bit) (60Hz)

so what's the bottleneck in this PC?

 

[Sunius]

The graphics card. That card won't get more than 30-40 fps in crysis 2 .