There is a special utility called Heavy Load. It fully tests CPU/Memory/GPU of the PC.
Please feel free to use it while choosing optimal configuration, sometimes this kind of check may be very useful.
We are here to help! If you have any questions or issues, please do not hesitate to contact our team by emailing support@artec-group.com or by clicking on "Ask Support" button on the upper part of the screen. We will always be happy to assist you and will get back to you as soon as we can.