bitspower nb/sb/qpi block and their mosfet blocks too..
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Components: Intel i7 965, Asus Rampage II Extreme, Nvidia GTX 285 SLI, Team Xtreem DDR3 1866 3x2gb, Corsair HX1000, WD Caviar Black 640gb, WD Caviar Black 1tb, Samsung 2693HW 26" LCD, Lian Li PC-A77b
Cooling: Swiftech Apogee GTZ, Bitspower Mobo Freezer & Mosfer Freezers, EK GTX 285 Acetal/Nickel, EK D5 top Rev 2, EK 150 Res, MCP655 Pump, DD/Feser 3/8-5/8 White tubing, Arctic RC Ram Heatspreaders, 3 x Yate Loon H's, 3 x Sharkoon 120mm, Scythe Kaze Master Ace, BP 3/8-5/8 Compression Fittings, Various BP Elbow/Adapter Fittings
I've tried the Mips, EK and Bitspower blocks for the R2E.
Mips: easy to setup and works well. Kind of restrictive from the looks of it though (mosfet in/out are only ~half the diameter of G 1/4).
EK: what can I say? It looks nice, but fit isn't very good. They corrected the small mosfet block, but the larger one still has holes spaced too far apart. The NB/SB block doesn't cool everything the original one does. Not sure whether it matters, but I'm not going to let it sit there for a while to find out if something blows up
BP: nice blocks and good performance. Mount for the QPI/DRAM section is ill constructed however. There's no access to the mounting screws after you install the top block part. It's only held to the lower NB/SB section by a D-plug and a flimsy screw with a little spring. To get it to seat deep enough I had to countersink one of the screw holes under the plexy mount plate. Admittedly, it's in part due to using my own 1mm thick thermal pad there instead of the provided 0.5mm. I changed the pad thickness, because 0.5mm is quite delicate and punctures easily when you push on the QPI/DRAM block section. You do not want to risk a short there.
I LOVE the Koolance NB+SB block it's beautiful, and I use the EK mosfet blocks because I had a few problems with the koolance blocks causing warping of the board (something that may be fixed now, not sure).
Bitspower is the only one piece implementation right now since Koolance Full motherboard block for some reason is retired
But i agree with cx-ray . I'm not feelling comfortable with the implementation on QPI/DRAM .
Enzotech is good looking , secure in every way , but the three pieces alltogether cost 250 $ , way to expencieve for my pocket.
Ek . I own a few Ek's waterblocks and i'm very happy , but this implementation is rather poor for such a motherboard , take a look at his EVGA class. I'm disappointed.
Right now in seems ramapage II Gene would be a better choise