Noctua, Cryorig, Thermalright, Phanteks, Alpenfohn, Silverstone, be quiet!, etc coolers of similar design and size all cool similarly .. and the vast majority of AIO CLCs (CLCs being factory sealed loops with no provision for maintaanance, no threaded fittngs, aluminum radiators and pumps that flow maybe 60 l/h are almost all made by 2 companies; Asetek and CoolIT. All Corsair CLCs are made by those two companies. Here is a chart of retail companies selling CLCs and who makes them. Some AIOs are not CLC; Swiftech, Alphacool, EKWB all make pre-built and filled loops. Here is a chart of AIO and CLC coolers retail brand name and manufacturer
Here is AIO & CLC pump specifications. It is far from complete because manufacturers generally do not publish the specs. I included EK-D5 pump because it is probably the most popular pump used in custom loops and it shows just how little water most CLC pumps flow.
Air cooler cooling ability has changed little in last 7 or so years .. when NH-D14 and Silver Arrow came out. They still cool as well as newer coolers do.
There are 2 reasons CLCs often score lower temps on test systems.
1. Their fans move much more air (and are much louder).
When tested at same noise level air coolers are almost alway as cooler or cooler.
2. Many (most) reviews use systems built in a case to test with while monitoring room ambient air temp.
- This means they are not testing one cooler's performance against another cooler's performance, but are instead testing how different coolers perform in a given system .. so unless you have an identical system your cooler results will be different. In recent years I've noticed more reviewers now testing on open bench and monitoring cooler / radiator intake air temp.
- To test cooler against cooler requires monitoring and recording the air temp going into cooler in real time. The temperature differential between cooler intake air temp and CPU temp is the delta temp that is important .. not the room temp and CPU temp. Cooler intake air temp can be anywhere from 2-3c warmer to 20-25c warmer than room when system is running stress load testing.
- Cooler intake temperature difference is because almost all stock cases do not have optimized airflow. so cooler intake airlfow is warmed by other components inside of case.
- Most CLC tests are with CLC radiator mounted as intake so all air going into case being used to cool other components that are not being cooled by CLC have pre-heated air from CLC trying to cool them.