Test Methodology and Performance
|Category||Model||HEXUS Review||Reviewed Price||Warranty||Product Page|
|Air||be quiet! Dark Rock Pro 4||April 2018||£80||3 Years||bequiet.com|
|Cooler Master MasterAir MA620P||March 2018||£75||2 Years||coolermaster.com|
|Liquid||Aerocool Project 7 P7-L240||February 2018||£100||2 Years||aerocool.com.tw|
|Cooler Master MasterLiquid ML120R RGB||May 2018||£100||2 Years||coolermaster.com|
|Corsair Hydro Series H100i Pro RGB||July 2018||£110||5 Years||corsair.com|
|Corsair Hydro Series H115i RGB Platinum||November 2018||£140||5 Years||corsair.com|
|Corsair Hydro Series H150i Pro RGB||January 2018||£165||5 Years||corsair.com|
|Deepcool Captain 240 Pro||January 2019||£150||3 Years||gamerstorm.com|
|Deepcool Gamer Storm Castle 240 RGB||July 2018||£96||3 Years||gamerstorm.com|
|Fractal Design Celsius S24||May 2017||£105||5 Years||fractaldesign.com|
|NZXT Kraken M22||March 2018||£90||3 Years||nzxt.com|
HEXUS CPU Cooler Test Bench
|Hardware Components||Product Page|
|Processor||Intel Core i7-8700K (overclocked to 4.8GHz)||intel.com|
|Motherboard||Asus ROG Maximus X Hero||asus.com|
|Graphics Card||MSI GeForce GTX 1080 Ti Gaming X Trio||msi.com|
|Memory||G.Skill Trident Z 32GB (2x16GB) DDR4-3200||gskill.com|
|Power Supply||be quiet! Dark Power Pro 11 1,000W||bequiet.com|
|Primary Storage||256GB WD Black PCIe SSD||wdc.com|
|Secondary Storage||1TB Crucial MX300 SATA SSD||crucial.com|
|Chassis||be quiet! Dark Base 700||bequiet.com|
|Monitor||iiyama ProLite X4071UHSU-B1||iiyama.com|
|Operating system||Windows 10 Pro||microsoft.com|
Our test platform has been refreshed for 2018 and now includes a hexa-core Intel Core i7-8700K processor overclocked using 1.225v to 4.8GHz across all cores. The 12-thread chip is paired to 32GB of dual-channel G.Skill Trident Z DDR4 memory set to run at 3,200MHz using the built-in XMP profile.
To get a feel for how the coolers compare, CPU temperature is logged while a large 4K video clip is encoded in multiple passes using the freeware HandBrake utility. The workload tasks all available threads for a prolonged period and, in order to provide a stabilised reading, we then calculate the average temperature across all cores from the last five minutes of encoding.
Actual CPU temperature is recorded and we also graph the delta temperature - that's CPU temperature minus ambient temperature. Last but not least, to give you an idea of cooler acoustics, we use a PCE-318 noise meter to measure overall system noise in both idle and load states.
Our be quiet! Dark Base 700 chassis is set to run with its two stock SilentWings 3 PWM fans - a 140mm front intake and a 140mm rear exhaust - both of which are set to low speed (setting 1) via the integrated fan hub. All CPU cooler fans are set to a 'silent' profile from within the Asus BIOS, and when testing liquid coolers the pump is connected to the motherboard's dedicated water-pump header.
When a radiator is used, it is installed in the roof or rear of the chassis and any bundled fans are configured to push air through the radiator and out of the enclosure.
Captain 240 Pro may be significantly dearer than the Castle 240 RGB, but then it's also a noticeably better performer. Deepcool's latest 240mm solution is doing a fine job of taming our overclocked Core i7-8700K processor.
Temperature isn't the only area of improvement. In addition to delivering better performance than the Castle 240 RGB, Captain 240 Pro also happens to run a bit quieter. The cooler is barely audible when our test platform is idle - the pump in particular is impressively quiet - and though the fans are noticeable when the going gets tough, it's a steady hum that isn't off-putting.