We took note of the drive’s temperature during some of our benchmarking runs. The HP FX900 Pro uses a thin thermal pad which employs graphene foam in its construction. The hottest the drive got was when it was being pushed extremely hard during the Performance Stability test when it peaked at 63° C, perilously close to the maximum operating temperature of 70° C. However for the bulk of our testing the temperature averaged around 40° C, comfortably below the maximum operating temperature