This is the bit being referred to above:
If you are doing any work with that, you have to be slow, careful and methodical. I didn't use the Wera brand torque screwdriver set but did have good quality screwdrivers with the appropriate attachments and just went slowly and carefully. It originally had the E5-2695 V2 processor. I didn't take the video cards off - I was only doing the CPU upgrade.
It did look okay from the outside but inside it was very dusty and needed a good clean up. (cough, cough, cough... blurgh, dust everywhere)