Hardware Labs Black Ice Nemesis 420GTS Radiator

I am not going to bother with the specs since one can find them on Hardware Labs website.I will however tell you my experience with this versus AlphaCool, XPSC, EK, and Koolance, where Hardware labs radiators (specifically their slim-line rads) are some of the best out there in terms of thermal performance. JayzTwoCents uses the GTS line of rads in Skunkworks, so that tells you something.It is worth to note that this radiator is highly restrictive however. What does that mean for the end user? Your pump noise will most likely go up due to needing greater pressure to push the liquid.As far as installation, it was a breeze. I cleaned out the radiator with Mayhems cleaning fluid, and did not see any particles inside which most likely points to them flushing the rads prior to selling them as well.Over-all I am very happy, and will be buying another one that is needed for my current build. Will post pictures once it is finished.I do recommend.I suggest you guys update some nicer looking pictures for showcasing these rads on amazon instead of it being on a cardboard box.

Overall, very nice piece of equipment. Solidly built (better than the EKWB it replaced) and performs well. The reason why I took off one star is that there was a LOT of residue in the radiator that had to be flushed out.

Build quality is stellar. I love the finish on it.Performance wise this is probably the best slim radiator on the market. However the coolant channels are really narrow and at 420mm long, the flow restriction is very high for a radiator.This radiator will give you great results as long as you have a 15W DDC or D5 pump at a decent RPM. Watercooling enthusiasts with low power pumps or running their pumps low for noise reasons will want to look at a lower restriction radiator.The radiator out of the box was pretty much clean as a whistle. Flushed it many times without debris falling out, but your mileage will of course vary. Always flush your radiators with at minimum hot water or risk clogging up your waterblocks...

Great for high performance cooling. Used to cool my 8700k and 1080 with temps between 60-70.

Good