Everything needed (monitor, peripherals, motherboard w/CPU and GPU, radiator, PSU and so forth) was placed in a sealed climate controlled box at 25 +/- 0.25 ºC. Each radiator was connected by Koolance QD3’s for easier changing of fans and radiator. The flowrate was held at 1 GPM constant. The CPU, an Intel i7 4770k at 4.6 GHz and 1.3 Vcore, was held at a constant load using a custom XTU profile and the GPU, an EVGA GTX 780 Ti Classified KPE under load from Unigine Heaven 4.0 at 1080p/extreme HD settings, was overclocked and overvolted such that the total system power draw was 650w as measured by a power meter. A near constant heat load into the liquid loop helped achieve stable liquid loop temperatures (as measured by 3 separate in-line temperature sensors hooked up to the AQ6) pretty quickly. The tubing and fittings were insulated by a heater sleeve with the heat function not being utilized. Every single measurement was done twice to be sure. Any possible effects of running a fan outside of a static max speed was minimized as much as possible by using a comprehensive series of fans in push to cover a broad RPM range- Noiseblocker PK series till 1700 RPM and then the EK Vardar F3-140ER for a 2000 RPM data point.
Results and discussion
Please note that lower is better here.
For those viewing on mobile devices or having difficulty seeing the interactive charts above, please click for the respective RPM charts: 700 RPM, 1200 RPM, 1500 RPM, 1700 RPM, 2000 RPM (clicking on one is sufficient)
Not bad at all, and about what I was expecting given everything including the review of the Nemesis GTR 480. The interesting comparison here is between this and the older GTX it directly replaces, and does a great job of doing so. But not everyone wants to run 140 mm fans at 1500+ RPM though, and yet there are others who simply want to see what this rad is capable of. So at the request of some readers I did a small push-pull test as well. By small, I mean everything all over again except for the EK Vardar/2000 RPM test since I do not have 8 of those. Thanks again to Blacknoise for having supplied all the fans when I first requested them! So without further ado, here are the results:
More of the same here, except push-pull really helps out with this radiator (and also the GTX and EK-Coolstream CE) to the point where at lower-similar noise levels you can get better performance compared to fans in just push alone. The scaling is very good too to the point where if you do not care about noise, the Nemesis GTR should do great with high speed (2500+ RPM, say) fans in push-pull to the point of coolant temperature reaching close to ambient even.