Quote:
Originally Posted by
SonDa5Â

The orientation of the block is not parallel with the die underneath the IHS. Should the high pressure lines be parallel with the die? I'm looking into getting a different back plate because I want the back plate to sit flush with the MB PCB.
Ideally, yes. On my sup hf only makes about .5C difference to rotate block 90 deg. But having a bow vs not having a bow can make 2-3C difference, regardless of whether parallel or perpendicular to die. In fact vapors testing at skineelabs, for example on the kryos block, it was in second place on one test with a mild bowed block using default O ring, but using a fatter O ring to cause more of a bow improved the temps to first place. One of waterblock testers on xtreme had lapped the bow out of one of the blocks to more flat, and worsened temps 1-2C.
I think some of the variability in testing (one tester has particular cpu block performing better than another tester) is variability in machining block to block, ie internal channel depth and contact/bow differences, not to mention testers with mount pressure differences, IHS/cpu differences etc.