I purchased this computer for online racing which needs a high frame rate and I have not been disappointed.
I left the graphics card as standard (Nvidia Geforce GTX 650 1gb) hoping this would be enough to handle the speeds needed for iracing and i have had no problems with slowing down or buffering. I can have the quality settings turned up full which makes the gaming more enjoyable.
I will also add that the service provided by UK gaming computers was excellent, and particularly good was the emails at each stage of the process so I was always confident that my computer was moving through the system.
I can thoroughly recommend both this computer and company.