DangerDen M5 & MC-TDX CPU Waterblocks Review
 

Nothing says, "My computer rocks!" quite like a sweet looking water cooling system. And it gets better and better as all the blocks evolve. This has been true for just about every water cooling manufacturer. We've seen plenty of water cooling kits and cooling blocks come and go. And it's just as interesting today as it was the first day water cooling made its appearance. DangerDen has come a long way in offering arguably the greatest Lucite cooling blocks. However, we've never had the privilege of testing anything from DangerDen up until now.

http://www.virtual-hideout.net/revie...ks/index.shtml

Q6600 @3.1Ghz 55-58 degree C no mention of vcore at 21C room using "good" watercooling a good base for comparison to air cooling?

He's using "a first revision" QX6800 . I guess that means B1 stepping.
That might explain the high temps. Although I agree this review kinda sucks