DeepCool’s LT720WH delivers top tier performance, keeping Ryzen 7700x under 95c even in demanding workloads

Pros:

• Value oriented price of $139.99
• Full RAM clearance and compatibility
• Top tier cooling capacity, even when fans are set to run silently
• Available in white (LT 720 WH) or black (LT720)

Cons:

• None!

About DeepCool

DeepCool was founded in 1996 in Beijing, China and is a favorite of many enthusiasts. They are well known for their air and water coolers and computer cases. They also offer fans, power supplies, and peripherals such as keyboards and mice. One thing I like about DeepCool is not only are they constantly striving to innovate to create products with higher cooling capacity – but they also push the performance/$ bar, providing products that don’t break the bank.

Today we’ll be looking DeepCool’s best performing liquid cooler, the 360mm LT720 cooler, and testing it with AMD’s Ryzen 7 7700X CPU.

Foreword

Over the past few weeks I’ve been exploring different levels of cooling with AMD’s Ryzen 7 7700X CPU. When I tested EKWB’s AIO Elite 280, it surprised me by able to keeping the CPU under TJmax in intensive workloads – I had been under the impression that it was “impossible” to keep Ryzen 7000 CPUs under TJMax in intense workloads. On the opposite end, I tested BeQuiet’s Pure Rock LP SFF cooler – which was only able to cool 66W.

In the past I’ve mentioned how my past testing of coolers had focused on Intel CPUs because they were the most challenging to cool and also consumed the most power. When Alder Lake was released, I noticed that the thermal difficulty of cooling the 12900K was more difficult compared to prior generation products – only a few coolers were able to keep it under TJMax.

Intel’s i9-13900K and AMD’s Ryzen 7 7700X CPUs can be even more difficult to cool in heat intensive workloads – and this trend is likely to continue with future generations of CPUs. As CPUs continue to shrink in size, thermal density rises, increasing the difficulty of cooling. Indeed, it is no longer worrying to run a desktop CPU at it’s peak temperature – it is to be expected in intense workloads without power restrictions or undervolting.

I have been interested to see how different levels of cooling performance effect both AMD and Intel platforms for some time. Thanks to our partner ASRock this is now possible – they sent a sample of their B650E Taichi for testing purposes. I will be taking a closer look at this motherboard in the future – but in the meantime check out reviews of this pristine motherboard on Funkykit & Tom’s Hardware.

Introducing DeepCool’s LT720 WH, a white 360mm AIO Liquid Cooler

Packaging and Included Contents

The LT720 arrives in a box with an outside covering showing the product and plastic covering (which was taken off before I took the photo). The inner contents are packaged with molded cardboard and plastic coverings for the protection of the individual parts. The mounting accessories are secured in a cardboard box.

Included in the package are

• 360mm Radiator
• Infinity Mirror CPU block with 4th Generation DeepCool liquid pump
• Pre-applied thermal paste
• 3x 120mm fan
• Mounting for modern Intel & AMD platforms
• Low noise PWM adapters
• 3-way fan splitter
• User Manual and Information Pamphlets

AM4 and AM5 Installation

It was a simple and easy matter to setup and install DeepCool’s LT720WH.

Step One: Remove the default AM5 retention socket

Step Two : Attach mounting standoffs, then secure the mounting bracket

Step Three: Secure the cooler to the mounting bracket

Step Four: Attach the Infinity Mirror

Step Five: Secure the fan and radiator as appropriate to your case. Normally I would test an AIO with the radiator at the top, however on this case there is only room for a 360mm through the front. As you’ll see from the testing results, DeepCool’s LT720 performs well even in this orientation.

Features of DeepCool’s LT720WH 360mm AIO Liquid Cooler

RAM Clearance	All heights supported
Coldplate	Copper
Thermal Compound	Pre-Applied
Radiator Dimensions	402×120×27 mm
Radiator Material	Aluminum
Pump Speed	Up to 3100±10%
Pump Noise	Up to 19 dBA
Compatible Socket	Intel LGA 1700, 115x, 1200, and 20xx AMD AM4 and AM5
Manufacturer Warranty	5 Years
Price	$139 on Amazon.com

Full RAM Clearance

As the CPU block doesn’t overhang the RAM in any way, all RAM sizes are supported when using this cooler.

Full Copper CPU plate with pre-applied thermal paste

DeepCool’s LT720 comes pre-applied with thermal paste to make the installation of the cooler simple. The CPU contact plate is made of pure copper for optimum heat dissipation and thermal transfer.

Accessible Refill Port

While you won’t ever need to worry about refilling the AIO during the lifespan of it’s 5 year warranty, if you ever do need to refill the unit there is an accessible port to do so.

High Performance 4th Generation In-house design AIO Pump

One of the most important factors in the performance and noise levels of a liquid cooler is its pump. Most coolers on the market use Asetek based designs – not but DeepCool designs their own pumps in-house. The LT720 features a 4th generation pump design with a three phase drive motor running at up to 3100 RPM to enable efficient and strong cooling capacity.

ARGB Infinity Mirror CPU Block

On top of the AIO pump rests an Infinity Mirror with aRGB header support.

3x DeepCool FK120 fans

There’s more to a cooler than just it’s heat sink, the fans paired with a cooler have a huge impact both total cooling potential and noise levels – included with the LT720WH are 3x FK120 fans that are tuned to higher performance than the retail versions of these fans, offering increased maximum speeds of 2250RPM.

DeepCool advertises the following with this fan:

• Designed With Precision
  • Carefully constructed and tested to enhance static pressure and concentrate airflow for outstanding cooling performance on any mounting application including cooler heat sinks, radiators, and case fan configurations. The narrow frame bezel and wide fan blade provides increased surface area to deliver higher efficiency.
• Elite Cooling
  • Extremely efficient with a PWM range up to 2250RPM that maximizes air pressure and airflow for impressive cooling results while offering dynamic balance between high performance and low-noise operation.
• Outstanding Details
  • High-quality polybutylene terephthalate (PBT) material is used to ensure increased durability and wear resistance, allowing the fan blades to maintain high tensile strength. Shock-absorbing rubber pads shield the screw mounts to reduce unnecessary vibrations for stable operation.

Model	FK120
Size	120 x 120 x 25 mm
Speed	400-2250 RPM±10%
Blades	9
Airflow	Up to 85.85 CFM
Static Pressure	Up to 3.27 mmAq
Noise Level	Up to 32.9 dB(A)
LSP Noise Level	Less than 28.2 dB(A)
Bearing	Fluid Dynamic Bearing
Connector	4-pin PWM
Lighting	aRGB support

Test Platform Configuration

Test Configuration
CPU	AMD Ryzen 7 7700X
Motherboard	ASRock B650E Taichi (sampled by ASRock)
Computer Case	DeepCool CK560WH (sampled by DeepCool)
PSU	DeepCool PQ1000M (sampled by DeepCool)
Storage	1TB Kingston Fury Renegade
GPU	Intel ARC A770 LE (sampled by Intel)
RAM	32GB (16gb x2) Crucial DDR5-4800 (Sampled by Micron)
Coolers Tested	DeepCool AG500 DeepCool LT720 WH Iceberg Thermal IceSLEET G4 Silent Fractal Celsius+ S28 EK AIO Elite 280 D-RGB BeQuiet! Pure Rock LP

As I’ve only had time to complete testing of six coolers on this platform, as such there is limited comparison data. This will grow as I continue to test coolers. For thermal results, I’ve tested the CPU in three configurations

• At the default power limits
• With a 95W PPT enforced
• With a 75W PPT enforced.

Default Power Limits

At the default PPT of 105W, the most intensive loads can be difficult to cool and result in the CPU running at TJMax. As such, we’ll be looking at two metrics in this situation: Noise levels and watts cooled.

Well, that’s what we would be looking at if the CPU hit TJmax – but DeepCool’s LT720 was able to rise to the challenge of keeping the CPU under TJMax at the default power limits.

Keeping Ryzen 7700X under TJmax in a rendering workload is an impressive achievement on it’s own, but I didn’t expect the LT720 WH to beat EKWB’s AIO Elite by 2C and run quieter while doing so!

At 53 dBA this noise levels are on the louder end of things, but this sort of cooling capacity doesn’t come easy. Based on my previous testing results I have with Intel’s i9-13900K at Tom’s Hardware, which also includes results from DeepCool’s LT720 (black model), I think very few coolers will be able to offer this level of total performance.

Some of y’all might notice that the graph starts at 36 instead of zero – this is because my sound meter cannot measure noise levels lower than 36 dBA. Since that is the noise floor of this meter’s recording capabilities, 36 dBA is the “zero” for our testing purposes. For those concerned that this might distort results – there’s no worry. If anything, the graphs above will minimize the differences in noise levels because dBA measurements are logarithmic.

For a more detailed explanation of how decibel levels correspond to perceived noise levels, please check out the video below from BeQuiet! which makes it easy to visualize and understand the true impact of of increasing dBA levels.

Noise Normalized Results

Performance only scales by a limited amount with improved cooling capacity with Ryzen 7000. This also means that there is less of a benefit to running fans at higher performance levels. As such, it can be useful to see how coolers compared when noise normalized for quiet operation.

DeepCool taking the top of this chart didn’t surprise me after seeing the results of the stock power limits testing, but what really shocked me is how close the LT720 came to running the stock power configuration under TJMax while running at noise normalized settings for silent operation.

Ryzen 7700X will use ~135W maximum at the stock power configuration, so a result of 125W cooled while running completely silent is simply phenomenal! This means you can run the LT720 at silent settings and encounter virtually no performance loss in the most intensive workloads.

95W PPT

Imposing even a minor power consumption limit on AMD’s Ryzen 7700X reduces cooling difficulty dramatically resulting in the ability to easily to cool the CPU under TJMax (95c), as such in these situations the total noise levels are more important. It’s also important to test in these TDP restricted situations, because most “real life” workloads will not push the CPU to it’s limits.

The results in this scenario are much like those in the full power test. DeepCool’s LT720 WH is again the best result I’ve seen in my limited testing on Ryzen 7700X. It runs audibly at this power level when tied the default fan curve of ASRock’s B650E Taichi, but not noisy in my opinion.

75W PPT

Lowering the PPT to 75W further reduces the cooling difficulty, bringing CPU temperatures down to 37C over a 23C ambient temperature. At only 42.9 dBA when running at the default fan curve of ASRock’s b650E Taichi, the operation here is that of a low hum.

It’s important to remember that if you prefer fully silent operation, the noise normalized results shown earlier demonstrate that you won’t lose any performance in these power limited scenarios if you set fan speeds to run silently.

Conclusion

DeepCool’s LT720 WH provides excellent performance with Ryzen’s 7700X, and is one of the few coolers capable of keeping it under TJMax in any workload – provided you don’t raise the power limits. If you prefer silent operation, this AIO only loses ~10w of cooling capacity when the fans are set to run quietly.

The LT720 WH is currently available for $139.99 USD at Amazon.

For it’s top tier cooling performance and unbeatable value, the LT720 WH receives our Gold Award – you can’t go wrong with DeepCool’s LT720WH Liquid Cooler.

If you like reviews like this, check out my other cooling reviews with Intel’s i9-13900K at Boring Text Reviews and Tom’s Hardware