Tier 1: These coolers are able to keep the i9-12900K below TJ max in most loads, with no power limits enforced. I expect only the best liquid coolers to meet this standard. While this unit does have an accessible refill port, DeepCool advises to send it to them if refill or repair is necessary. With this unit’s 5-year warranty, you’re covered in the unlikely event occurs where service is required. Installation In terms of total wattage this liquid cooler can handle, DeepCool’s LT520 shows the strength of their 4th generation pump design – handling 288W (on average) during the course of the Cinebench testing. This is similar performance to BeQuiet’s and Enermax’ offerings of this size class, and even 360mm models from Arctic & MSI that I’ve tested on Tom’s Hardware ( see results here). While it was fairly easy with previous generations of CPUs for coolers to keep the flagship i9 processor well under TJ max (the maximum temperature a CPU can sustain without throttling) in tough workloads, this is no longer realistically possible on current generation CPUs (and the 13900K especially) without extreme cooling (or enabling power limits).

DeepCool has certainly been on a bit of a busy release streak recently when it has come to brand-new cooling products. In terms of air coolers, we’ve seen models such as the AK400 ( review link here) and the AK500 ( review link here) which both impressed us massively! – This time around, however, it’s time to take something of a technological upgrade as we take a closer look at the newly released LT520 AIO liquid cooler! DeepCool LT520 AIO Liquid Cooler

Cooling loads of up to 315W, DeepCool’s LT720 provides the strongest cooling performance we’ve seen yet when paired with Intel’s i9-13900K.

You Prefer Easy Installation: The cooler offers installation with 14 components for AMD CPUs, suitable for users valuing straightforward setup. Don’t Buy It If: Tier 2: These coolers are able to keep the i9-12900K under the TJ max threshold with CPU power limits of 200W enforced. I expect most liquid coolers and the best air coolers to meet this standard. will be more powerful than previous generations through the use of high-performance efficient cores. While most AIOs on the market are based on Asetek designs, DeepCool’s AIOs use a 4th generation pump designed in house by DeepCool. It utilizes a 3-phase drive motor which runs at up to 3100RPM, and features an improved microchannel design for better coolant flow vs previous generation products. Image Source: DeepCool Fans The 240mm liquid cooler comes in a box that uses molded cardboard, foam, and plastic for the protection of the inner contents.

While stress testing in Cinebench, I run both with power limits removed and with an enforced 200W CPU power limit. In this test setup using MSI’s z690 A Pro DDR4 Motherboard and Be Quiet’s Silent Base 802 Computer Case. Only the best coolers are able to pass Cinebench testing when power limits are removed. I'll be testing DeepCool’s LS520 with Intel's i9-12900K. Due to the increased thermal density of the Intel 7 manufacturing process, as well as changes to core and component layouts, Alder Lake CPUs are more difficult to cool than previous generation CPUs in the most heat-intensive of workloads. Accident, abuse, misuse, neglect, fire, water, lightning, other acts of nature, electrical surge, commercial or industrial use, unauthorized product modification or failure to follow instructions included with the product. The increased cooling challenges posed by Raptor Lake mean that we’ve had to change some of the ways we test coolers. Some coolers were able to pass Cinebench R23 multicore testing with Intel’s 12th Gen i9-12900K when power limits were removed (although only the strongest models were able to pass that test). Most liquid coolers and all air coolers I’ve tested “failed” that test because the CPU reached TJ max in this scenario.

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The included DeepCool FK120 Fluid Dynamic Bearing (FDB) PWM fans are that are returned and balanced to perfection for both performance and operational efficiency. The sturdy frame and fluid dynamic bearings offer stable and long-term reliability. The FK120 fans included feature a dynamic PWM range than their retail counterparts. The Fluid Dynamic Bearing design provides dynamic PWM range, supreme airflow, near silent operation at ≤32.9 dB(A) full load noise, and 50,000 hours of long operational lifespan. This is also the lowest TDP level I test at this power level, many coolers will run so quietly I’d have to disable my system fans to get lower noise readings. One thing I like about DeepCool’s fans is that they have indicators showing the direction the fans spin and the direction of the airflow – this makes it easy for a person new to building PCs to know which direction the fans should be installed. Fan Model When restricted to 200W, the LT720 kept Intel’s i9-13900K CPU at 52c over the ambient room temperature. This is a better thermal result than you’ll see from any air cooler, and it is in line with most liquid coolers on the market that I’ve tested – where I’ve seen a range of 49-52C over ambient. Given the very similar results in liquid coolers here, I’ll likely add 250W testing in the future to better show the performance differences of liquid coolers. You Require Low Noise: It has a fairly high overall noise output, so may not be suitable for users prioritizing a quieter system.

most notably is no longer square, but rectangular. While this new generation of Intel CPUs promises even In addition to testing Cinebench without power limits enforced, we’ll also be showing results when the CPU’s power consumption is limited to a more reasonable 200W. We’ll also show results at 125W for those who prefer whisper-quiet cooling, at the cost of some performance. For both of these results, we’ll show traditional delta over ambient temperature results. more performance, not every compatible cooler available has the LGA1700 mounting hardware included inTier 3: These coolers are able to keep the i9-12900K under TJ max with CPU power limits of 140W enforced. Testing Methodology While in the past a CPU hitting its peak temperature was cause for concern, enthusiasts are going to have to learn to accept high temperatures as “normal” while running demanding workloads with Raptor Lake and Ryzen 7000 CPUs. Modern AMD & Intel CPUs are designed to run fairly hot without any problems – up to 95 degrees C for AMD Ryzen 7000 CPUs, and up to 100 degrees C for Intel’s Core i9-13900K. Similar behavior has been standard in laptops for years due to cooling limitations in tight spaces. We recorded 50 dB(A) noise output from these fans at an ambient of 32 dB(A). The fans are loud at full speed and I would suggest PWM Auto control or custom fan curve. Should You Buy It? To test the limits of a cooler's thermal dissipation capabilities, I run two primary stress tests: Cinebench and OCCT each for 10 minutes. While this may be a short amount of time, it is sufficient to push most coolers–air and liquid–to their limits. Unauthorized repairs to a DeepCool product will void the coverage offered by the warranty policy. DeepCool reserves the right to refuse to service any product which has been altered, modified or repaired by non-DeepCool service personnel.

Dropping the power consumption of the CPU causes the noise of the LT520’s fans to drop ~5 dBA vs full speed noise levels, bring the noise measurement down to 48 dBA. The LT series AIO coolers support most major RGB synchronization software to coordinate your colors and control different lighting effect to match personalize your system. DeepCool does not warrant that this product will meet customer's requirements. It is customer's responsibility to determine the suitability of this product. The cooler is an AIO and has no clearance issue for the RAM and PCIe slot. However, make sure that your case supports 240mm AIO. The dimension of the radiator without fans is 282x120x27mm (LxWxH). With fans, the dimension is 282x120x53mm (height is increased). Performance Benchmarks Oct 18th 2023 Lian Li Introduces Premium CPU Coolers Powered by Asetek's Most Advanced Liquid Cooling Technology to Date (4)

Top-tier cooling that doesn’t break the bank

This new architecture will have a direct impact on the appearance of the CPU, as Alder Lake features an This means that coolers that kept previous generation products like the i9-10900K nice and cool sometimes struggle to keep Intel's i9-12900K under Tj max–the top temperature before the CPU starts to throttle. Many coolers, including DeepCool’s last generation CASTLE EX AIOs, failed to keep the i9-12900K under TJ max when power limits are removed in workloads like Cinebench and OCCT when I’ve tested them. We are thankful to DeepCool for providing the testing unit. Awards Received By The Deepcool LT520 Cooler With a total system noise level of 43.4 dBA, the LT520’s noise levels aren’t quite what I would consider “silent”, but it doesn’t run loud in any sense of the word at all. Conclusion There is no dedicated A-RGB controller provided with the cooler. There is no hub provided with the cooler either. The terminal connectors are 4-pin PWM and 3-pin, 5V, and A-RGB ones. The A-RGB lighting is compatible with: