Posted 20 hours ago

ARCTIC Liquid Freezer II 420 - Multi-compatible All-in-One CPU AIO Water Cooler, Efficient PWM Controlled Pump, Fan speed: 200-1700 rpm (Controlled via PWM), LGA1700 compatible - Black

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The VRM fan clearly does something, and temperature improvements will follow the more even FPM on either side of the VRM heatsink, but we also want to be clear that a top-mounted radiator would also benefit the VRM. This is something we simulate in our test setup. VRM Thermals

Not a big deal since laying the board flat on the table bypasses it, but this could be even easier if Arctic refined the solution with cap screws. On the installation front, buyers should also be aware of the short cables for the fans. They can be connected to the splitter cable (which is sleeved alongside the tubes), but we prefer connecting our fans directly to the motherboard to exercise more control over the fans. This is easily solved with some 4-pin-to-4-pin extension cables. Conclusion This shows the delta in height, measured in microns, from a calibrated 0-point. The A500’s box plot shows the largest range, illustrating the chaotic levelness that hurt its performance, while the Deepcool Assassin III and original Wraith coolers have some of the best levelness. The Arctic Liquid Freezer II averaged about 8-10 microns depth from the 0-point, with minimums and maximums at 2 microns and 48 microns. The Liquid Freezer II has a couple deep points in the coldplate, but is overall closer to the smooth end than the unlevel end. Installation & MountingI have the same case, thermaltake view 71 with a ATX Motherboard, MSI MEG X570 ACE, Had an MSI MAG Series CORELIQUID 360R and it failed on me after 8 months. about as simple as that. i’ve got an arctic liquid freezer ii 420mm (actually 458mm from end to end) and am having a tough time finding a case to fit it while still allowing the hoses to reach the cpu. i bought a thermaltake view 71 but am having to return it due to this cooler not working in it. the radiator can mount on the side and front, but with barbs down the hoses simply aren’t long enough to reach the cpu. also from what i can see even if i got it on the the top the fans would protrude down into where the motherboard would be and still wouldn’t work.

The next test will be for the VRM fan. For this, we’re going to start with an overlay demonstrating the linear feet per minute flow, often called FPM or LPM, as measured with a hotwire anemometer at the edge of the chassis for the cooler. The measurement is taken at an angle toward the VRM heatsink. We measured at a few points and under a few conditions. Just received, unboxed Liquid Freezer II, dropped in to the case from the top, to see clearance, so far looks good. Will update here once I put together everything. Arctic has built, thus far, a good product. We need to see how it does long-term, as Enermax has scared us away from firm recommendations on thermals alone. We would recommend the Arctic Liquid Freezer II 280 as a go-to solution over competing liquid coolers, based on thermal and acoustic performance, although we’d also note that most proven (e.g. Asetek, CoolIT) coolers will perform similarly. If you want RGB LEDs, you’re mostly just paying more for them, but should be in the ballpark for performance.Time to move to VRM thermals. Before putting this chart up, a few important points: First, this is all relative, so our measurement points aren’t designed to test the motherboard, but rather to test the cooling capabilities of the CPU cooler on top of it. We’re taking VRM measurements at points that will work better for testing cooler impact, since we don’t care about comparative VRM performance from one board to the next. Second, we’ll show the numbers with the radiator mounted to the side of the bench. That’s how we tested all the liquid coolers so far, as it is more similar to a top-mounted radiator in a case. This means there’s always airflow over the VRM heatsink in all the CLC tests, whereas testing it on the table, away from the VRM, would paint a picture of Arctic’s VRM fan having a higher relative impact since you’d be taking away all cooling otherwise. We have these numbers too, but let’s focus on 3950X OC numbers at 35dBA radiator fan speed first, with the Arctic VRM fan at 100%. The test is also tough to standardize since every motherboard will have different heatsinks and positioning, so although you can mostly extrapolate out a hierarchy, it’s not perfectly comparable to every configuration. And again, please also remember that case configuration is the single most impacting to VRM thermal performance outside of the VRM design and cooling solution. What we’re saying is that this test will create an objective hierarchy, but that in all reality, a couple degrees here-and-there from the cooler won’t really matter much when considering the VRM is unlikely to melt itself in the majority of instances.

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