Quote Originally Posted by zeropluszero View Post
was there any doubt?
The day after launch, I almost had the full suite of testing done with original revision (the one that couldn't mount properly on a Gigabyte board--and I use a Gigabyte board) and it was edging out the HK3.0 by a really tiny margin then, with visibly horrible contact. I alerted Swiftech that something was awry with the mounting (it's a 60mm wide block, the HK3.0 is 59mm and needs the caps pushed aside, but the extra .5mm on that side and stricter lateral tolerances with mounting were really causing a problem) and the wheels went into motion for fixing it (which Swiftech addressed and fixed, fully, within a week of launch). But I've been sitting on "winning" data for almost two weeks now, so no, it wasn't in doubt for me

What was thoroughly surprising was how it behaved with varying flow--there's very little scaling in either direction and that's especially impressive in the low flow direction (better performance for more people).

Quote Originally Posted by shazza
A quick question (sorry if it was answered in the review, a bit of a headache going here) - The XT looks great. It is, however, the most flow restrictive of the blocks reviewed. However, it seems to perform in lower flow situations as well as high. Is this one of the differences between the XT and the Koolance 350 (or perhaps even the EK Supreme)? Since it's not included in your reviews, I hesitate to interpolate, but my fuzzy memory tells me it needed higher flow??? (or was it just that it is more restrictive than even the XT?)

And, great job on the Review Thanks for getting it up so soon.
I think you're looking for this: http://www.xtremesystems.org/forums/...d.php?t=235967

A comparison between all the results so far

The XT isn't the most restrictive block (that honor goes to a block that I haven't fully tested yet--actually two on my to-do list have proven in prelim testing to be more restrictive than the Supreme), but it is more restrictive than the GTZ in my tests. It gets especially restrictive at really high flowrates, but that shouldn't be a concern for most.

As for flow dependence....it's the most resilient to low flow of any block so far, that's for sure! The flipside of that is that it doesn't benefit quite as much as other blocks at higher flowrates, but there are still gains to be had if you have the radiator power to offset the increased heatdump of the additional pump(s).

The Koolance 350 and 345 on next on my to-do list and should hopefully be done by the weekend, then maybe I'll take another stab at the Phobya (utterly horrible results my first try, I might have done something wrong with assembling it, have to investigate more) so I have a block to pair with the Sapphire Rev.A I've already tested and shown the results of (just haven't posted a review of it).

Thanks for the compliments folks