The SE Classic and the AC 240LT were on par, but with better quality on the EKWB one.I believe @fabio concluded the TX240 was a couple of degrees cooler than the EK classic SE. Not sure how both of those compare to LT240 bit I think the XSPC will still outperform it, as the classic SE and LT have similar fin density.
The TX240 was 1/2 degrees better, but is really noticeable only in test and checking numbers.
BUT, this is true for a full loop with a Titan RTX and a Ryzen 3950X.
With only the CPU in the loop there will be zero differences IMO.
The main differences with the setup with 1 slim fan and 1 25mm fan are:
EKWB SE Classic is the hardest to fit. If everything is not perfectly placed, the small pressure on the radiator can give problems regarding the slim fan spinning. You need to be precise. You have zero tolerance.
AC 240LT, easier to fit, no available alone, but as everyone know, has the best and safe fit
XPSC TX240, denser for fins stack, the slim fan has to spin a bit faster to move air through. It is 125mm in width, and you have to push a bit to fit it inside the front panel. Also for it, you will have zero-tolerance. The pressure of the top panel can give an issue for the slim fan spinning.
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