TheOverclocker Issue 38 | Page 23

this level of cooling is more than enough and the maximum overclock is not going to increase further with any form of liquid cooling. Be it you use a custom loop or another high end AIO kit. There is a temperature difference under load of course, but what you should realize is that the maximum overlock for our particular CPU which was 4.5GHz, remained exactly the same. What did improve though is the GPU performance as shown in the graphs. What you should know is unlike with the standard all copper cooler that ships with this graphics card. The FC block for this GPU keeps the GPU clock constant at 1430MHz regardless of the benchmark, game or stress test. With the standard cooler, as brilliant as it is, GPU clocks dip to 1417MHz in many instances and when playing the most taxing games with all options enabled, this 1417MHz may sometimes dip to 1406MHz and perhaps less as shown by Furmark. This happens with the fan speed set at 50% and even at 100% sometimes. The latter setting being unbearable and not a practical way to operate the GPU for 24/7 use even though it does maintain a higher boost clock which is at its lowest 1406MHz. In contrast, when using the FC block and the Predator, the boost clock never fluctuates at all, constantly at the optimum clock of 1430MHz. This same behaviour is exhibited when overclocked as well, where the GPU clock remained at 1550MHz with a maximum load temperature of 44’C. Simply astonishing performance compared to the factory shipped cooler where the test would eventually crash. Where it didn’t crash, it resulted in a lowered GPU clock throughout every test. In a material way, the FC block and Predator AIO have allowed the test system to reach new levels of performance previously unattainable. As stated earlier, these days AIO kits do not improve CPU performance, but GPUs such as this one still benefit tremendous