Swiftech Apogee GTZ vs D-Tek Fuzion V2 As-Shipped

[Martinm210]

Nice to finally see your review. I went ahead and ordered the GTZ even though I already own the V2. I'm seeing too much variance between Core #0 and the rest of the cores on my quad w/ the V2, the most variance showing up between core #0 and cores #3 and #4. I've remounted multiple times w/o seeing much difference and this variance wasn't as great even with my TRUE. I also like to use my compression fittings finally! Thanks Martin.

At least from the tests I ran, the GTZ was doing a little better at holding the core temperatures between cores closer to each other. this is probably due to the larger slot like nozzle of the GTZ vs a smaller circle of the fuzion.

Great review Martin!

It looks like purchasing could come down to how many blocks will be in a loop or the need for 1/2" x 3/4" compression fittings.

Yeah, I'm not so sure I would be too worried about flow rate though. They were close enough to me not to get really excited about it. Especially when you start considering pump heat. While the fuzion ran higher flow rates it also ran with water temperatures that were almost .1C higher even with the larger quad radiator and 1550RPM fans. If you had a smaller radiator that could mean .2C or hotter water temps. I'm not sure the hydraulic gain would be there to make up for the heat. Regardless fractions of a degree are pretty hard to measure, even after 5 mounts and all these sensors, I'm still only good to about a half a degree or so.

I got my GTZ in the mail the other day, and pulled the block apart to take a look at the inside. When I did that I noticed a plastic insert inside the block that fell out when I pulled it open. The insert looks like it should fit a section in the top of the block, but doesn't quite fit (at least, not without me taking a hammer to it). Is the insert supposed to be loose like that (that is, not fully snugged into that slot), or am I supposed to put some pressure on it and force it back into its slot?

My nozzle plate fits very accurately, make sure you don't have it backwards or upside down. Mine will come out and slip back in without much effort at all. I need to get some internal pictures done then I'll be able to show you a better picture of the nozzle orientation.

Martin, one question please:
Are the backplates of the GTZ and FuZion V2 identical? The one of the V2 was almost (or totally?) the same as my old Thermalright Ultra 120 eXtreme-Backplate and looks like the GTZ´s one, too ... What is more, the screws of FuZion V2 seemed to have the same thread as the Thermalright ones.

They might be the same threading, but the standoff are different. You could probably get either one to work, but I would recommend using the backplate that comes with it otherwise you might not install the block with the intended pressure. They both bottom out very specifically and you could overtighten it with the V2 backplate.

I'm running the Q6600 with the D-Tek V2 and the quad mid-chamber insert right now. I'm confuse, is it better to use the stock mid-chamber with my Q6600?

Andy seemed to confirm with his quad that was the case. My first round that I had issues with my ambient and had to throw out was showing the quad midplate doing about a degree worse than the stock midplate. But you do need the midplate for sure.

Wow, i really like that swiftech, especially being able to use Bitspower Comps.

Martin is 2.26 to 1.86 a big difference in flow?

Just watch the o-ring seating on the compressions. I don't have any bitspower compressions, but the TFC compression will impact the swiftech logo that's raised above the block top because the barb seats are recessed. I think you could get them to work, but you might have to remove the logo first or use thicker o-rings.

No, I consider anything over 1GPM good, and 1.5GPM excellent. I want to do some pumping power vs heat dump experiements later, but I suspect the DDC3.2 with top as I had tested is too much pumping power for optimal performance on some of the blocks. Hard to say without testing, but a CPU only loop I would never worry about flow rate, just bottom line performance. Only in a multiple block loop would I worry at all about flow rate and both of these blocks are pretty good with that using a D5 or DDC, you'll still have plenty of reserve pumping power for most setups.