A:AnswerHello,
We use a variety of power supply and GPU brands in our systems, so we are unable to tell you the brand of the power supply or the GPU specs since it depends on which one your system shipts with. The power supply is 650 watts. The top exhaust can fit 120 or 140mm fans.
A:AnswerHello,
The liquid cooling is AIO. It is a closed loop AIO so it is not refillable. You may have to replace the cooler eventually, but it should last you several years with proper PC maintenance.