With a glance, it was obvious that the passively cooled Gigabyte card registered the highest temperatures in our tests. That was only expected considering its design. Other overclocked cards like Sparkle and XFX also had higher than average readings. However, the fastest GeForce 8600 GTS, the ASUS EN8600GTS TOP did rather well, with temperatures that were comfortably below the 50 degrees Celsisus mark. MSI, Gainward and XpertVision also did better than their peers, which perhaps justified their custom cooling solutions.