DeepCool was founded in 1996 in Beijing. best cpu cooler On the market, you have the following options Assassin III When AK620DeepCool’s current lineup includes both air coolers and AIO coolers, as well as computer cases, keyboards, power supplies, and other accessories.
We recently reviewed DeepCool’s budget AG400 cooler, which performed well in our testing. Today we take a look at the company’s latest top-end cooling product, his 360mm LT720 AIO. It features an upgraded pump and a new CPU block compared to his DeepCool AIO of the previous generation. But of course, the latest CPUs from AMD and Intel require better cooling. I’ll have to test the LT720 to see how well it handles the Core i9-13900K. But first, here are the specs for his LT720 from DeepCool.
cooler specs
| cooler | DeepCool LT720, 360mm AIO |
| Manufacturer’s suggested retail price | $139 USD |
| Radiator dimensions | 402×120×27mm |
| Radiator material | aluminum |
| pump speed | 3100rpm±10% |
| net weight | 1856g |
| Socket compatibility | Intel: LGA2066/2011-v3/2011/1700/1200/1151/1150/1155 |
| AMD: sTRX4/sTR4/AM5/AM4 | |
| Rated noise level | Pump: 19dBA |
| Fan: 32.9 dBA max | |
| base | copper |
| Maximum TDP (our test) | ~315W |
| guarantee | 5 years |
Packing and inclusions
DeepCool’s LT720 comes in a fairly large box with a plastic cover, foam and cardboard to protect the contents.
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Package includes:
- 360mm radiator
- CPU block with 4th generation DeepCool water pump
- 3x 120mm fans
- 1x fan splitter
- Mount for all modern CPU sockets (including AM5 and LGA1700)
- Information, support and installation guides
- Pre-applied thermal paste
install
Installing DeepCool’s LT720 was easy. Press the backplate against the motherboard, then slide the standoffs. Next, you need to secure the fan to the radiator and mount the radiator to your computer case. Once that’s done, press the CPU block onto the socket and secure it with the included thumbscrews. The final step is to mount the infinity mirror on top of the CPU block.
One important item to note: The LT series AIO works regardless of the CPU block orientation, but the company recommends mounting the LT720 at “6 o’clock” with the tube coming from the bottom of the CPU block. said there is a need. For best performance.
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Features of DeepCool LT720
4th generation in-house CPU pump
While the majority of liquid coolers on the market today are based on Asetek designs, DeepCool’s LT720 includes a 4th generation in-house designed water pump. It features a new flow path with an optimized machined copper block combined with a powerful 3100RPM 3-phase driven pump motor for strong thermal performance.
Full copper CPU plate
DeepCool’s LT720 CPU contact plate is made of copper and comes pre-applied with thermal paste.
infinity mirror
Above the water pump is an ARGB infinity mirror that gives the LT720’s CPU block a very unique look to the eye.
User repairable loop
If you prefer to manually refill the LT720, you can do it yourself. Doing so may void your warranty, but it will likely expire by the time the loop needs refilling.
Medium thickness 360mm radiator
The LT720 features 360mm with a thickness of 27mm. It’s not the thickest (or thinnest) radiator we’ve seen so far, but it should be compatible with most cases with room for three 120mm fans.
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3 times habit DeepCool FK120 Fan
Coolers are more than just heatsinks and radiators. Bundled fans have a big impact on cooling and noise levels. The LT720 includes he 3 custom FK120 fans. The FK series is DeepCool’s line of high performance 120mm PWM fans designed for the best cooling performance. However, the included fan is not the same as his FK120 fan on the market. These updated his FK120 fans feature upgraded speeds, more airflow, and higher static pressure.
According to the company, a high-quality polybutylene terephthalate (PBT) material is used to manufacture the FK series fans, which is more durable and wear-resistant, allowing the blades to maintain higher tensile strength. It is A shock-absorbing rubber pad protects the screw mount and reduces vibration and noise.
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One particularly useful feature for those new to building PCs is that each of DeepCool’s FK fans has an arrow indicator that shows both the direction of rotation of the fan and the direction of airflow. This clears up a question that plagues many new users. Did you install the fan in the correct orientation?
| model | Custom Deep Cool FK120 |
| size | 120×120×25mm |
| fan rotation speed | 500-2250 RPM±10% |
| air flow | Up to 85.85 CFM |
| air pressure | 3.27 mmAq |
| noise level | Up to 32.9dBA |
| Bearing type | Fluid dynamic bearing |
| lighting | none |
test method
With previous generation CPUs for coolers, it was fairly easy to keep flagship i9 processors well below TJ max (the maximum temperature a CPU can sustain without throttling) under demanding workloads, but current generation CPUs ( and especially 13900K) without extreme cooling (or with power capping enabled).
Peak CPU temperatures have been a source of concern in the past, but enthusiasts should learn to accept high temperatures as ‘normal’ while running demanding workloads on Raptor Lake and Ryzen 7000 CPUs. there is. The latest AMD and Intel CPUs are designed to run fairly hot without issue, up to 95C for AMD Ryzen 7000 CPUs and up to 100C for Intel’s Core i9-13900K. Similar behavior has been the norm in laptops for years due to cooling limitations in tight spaces.
Additionally, Intel’s i9-13900K supports Adaptive Boost Technology (ABT), which allows Core i9 processors to dynamically boost to higher all-core frequencies based on available thermal headroom and electrical conditions. increase. This allows multi-core loads to run up to 5.5 GHz with the required amount of heat dissipation. This feature works in an aggressive hot-seeking manner. If the chip detects that it is operating below the 100°C threshold, it will increase performance and power consumption until it hits the safe 100°C limit, maintaining higher clocks (and providing better performance). increase).
The increased cooling challenges with Raptor Lake meant that we had to change some of the ways we test coolers. Some coolers were able to pass the Cinebench R23 multi-core test with Intel’s 12th Gen i9-12900K when the power cap was lifted (although only the most powerful models were able to pass that test ).with most liquid coolers all The air cooler I tested “failed” that test because the CPU hit TJ max in this scenario.
On Raptor Lake’s 13900K, not a single cooler has been able to keep the CPU below its max TJ in this test. Instead, look at total benchmark scores and sustained clock speeds to compare performance.
Asus’ TUF Gaming Z690 Gaming Plus WIFI motherboard is used to test Intel’s i9-13900K CPU. Cooler Master’s HAF 700 Berserker Case fans are limited to 35% speed. The motherboard’s default fan curve is used for the CPU cooler fan.
In addition to testing Cinebench with no power cap applied, we also show the results of limiting the CPU power consumption to a more reasonable 200W. We also show the results at 125W for those who prefer very quiet cooling at the expense of some performance. For both of these results, we show the traditional delta result versus ambient temperature.
We provide sound level measurements recorded using a PSPL25 sound meter for all three power levels tested to compare the noise produced by each cooler in different scenarios. We expect most coolers to run effectively and quietly at 125W.
LGA1700 socket bend
Keep in mind that besides the CPU cooler, there are many other factors that affect cooling performance, such as the case you use and the fans attached to the case. Your system’s motherboard can also affect this. suffer from bendingThe result is poor cooler contact with the CPU.
To prevent bending from affecting cooling results, Thermalright LGA 1700 contact frame to our test equipment. If the motherboard is subject to bending, the thermal results will be worse than those shown below. Not all motherboards are affected by this issue. We tested the Raptor Lake CPUs on two motherboards.One of them showed a significant thermal improvement after installing Thermalright’s LGA1700 contact frame, while the other motherboard had no difference in temperature at all! Checkout Review of this contact frame for more information.
test configuration
| CPU | Intel i9-13900K |
| Tested comparison air cooler | Deep Cool AG400 |
| Deep Cool AG620 | |
| Iceberg Thermal IceSLEET G6 Stealth | |
| Thermal Light Assassin X 120 R SE | |
| Thermal light AXP120-X67 | |
| Compare tested AIO coolers | Arctic Liquid Freezer II 360 |
| Fractal Celsius + S36 Prisma | |
| motherboard | Asus TUF Gaming Z690 Plus Wi-Fi DDR5 |
| sheep | Important DDR5-4800 |
| GPUs | Intel ARC A770 LE |
| case | Cooler Master HAF 700 Berserker |
| PSUs | Cooler Master XG Plus 850 Platinum PSU |
