Though socket/type of cpu matters, you cant even make conclusions based on same socket/cpu type. Several testers tested 2 samples of same block on same system and got up to 1C or more difference, so just water block variance alone could put 2C difference in testing same block which would make a top block in one test be near middle of pack in another, if got best sample of one block and worst of another. Then add in IHS differences plus socket/cpu type differences, and no wonder results dont show the blocks performing in same order. I looked at data from 9 testers, including yours, it was skinnee, Stren, St0ned, hw max, martin1, martin2, jayhall, cartago, scamps, and mine. Only used testers that measure water temps.
Made a chart showing avg degrees C each block was from the best in each test and the standard deviation. The difference was just as pronounced looking at blocks tested on same socket, both martin and stren used 3930K on some testing, other testers used same cpu type, again with variable results. So I wouldnt even expect testing same socket would show any better correlation. Variability in individual IHS differences and waterblock base/channel differences are more than enough to prevent same block from testing same across multiple tests, even if all tested using same socket, but add in socket cpu type differences, and again no wonder of differences.
alphacool nexus only been tested twice, and is only one marginal test away from joining rest of pack, so cant make any conclusions, may simply not have been tested enough yet. Not scientific for showing what block tests best, but looking at SD vs difference, you can see the issue.
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