Fractal Design Celsius+ S36 Dynamic Cooler Review

In focus today is the Fractal Design Celsius+ S36 Dynamic liquid cooler. Despite its lengthy name, it’s more concise than some competitors. Built on Asetek’s 6th-gen pump design, it offers RGB options, but we’re exploring the non-RGB variant.

Noteworthy features include an ARGB-accented pump face and an integrated fan hub on the radiator, reminiscent of ARCTIC Liquid Freezer – II. The design simplifies control with a single cable managing fans and digital RGB elements through the radiator’s fan hub, coupled with a 4-pin PWM cable from the pump housing.

Compatible with Intel and AMD sockets, including AM4 and TR4 (with limited block coverage), this cooler showcases Fractal Design’s commitment to innovation.

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Key Takeaways

• Fractal Design Celsius+ S36 Dynamic liquid cooler impresses with its innovative design, featuring Asetek’s 6th-gen pump.
• PC enthusiasts seeking a liquid cooler with an innovative design should consider buying it because of its efficient cooling.
• Users seeking a more customizable RGB setup or enthusiasts prioritizing advanced control features over streamlined design should avoid this cooler.

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Let’s kick off this review and look at the cooler’s specifications:

Product	Fractal Design Celsius+ S36 Dynamic Cooler
Supported sockets (Intel)	1150, 1151, 1155, 1156, 1366, 2011, 2011-3, 2066
Supported sockets (AMD)	AM2, AM2+, AM3, AM3+, AM4, FM1, FM2, FM2+, TR4 (via included bracket in AMD Threadripper box)
Coldplate material	Copper
Thermal paste	Pre-applied
Block height	45 mm
Block measurements (with fittings)	86 x 75 mm
Block diameter (main block body)	62 mm
Pump rotational speed	800-2800 RPM in normal use, 3500 RPM during thermal protection mode that activates if the liquid temperature is over 60°C
Pump bearing type	Ceramic bearing and shaft
Pump PWM control	Yes
Pump acoustical noise (full speed)	20 dBA
Pump maximum pressure, 50°C	1.46 mm H2O
Pump input voltage	12V DC
Pump input current (without fans)	0.36A
Pump MTTF	50,000 hours
Tube length	400 mm
Tube material	Low-permeability rubber with braided nylon sleeve
Fittings, block side	Articulating 90-degree elbow
Fittings, radiator side	Straight rotary
Fan control	Dual mode (Auto/PWM)
Warranty	5 years
Fan type	Dynamic X2 GP-12 PWM
Rotational speed	500 – 2000 RPM
Bearing	LLS
PWM	Yes
Acoustic noise (max)	32.2 dBA
Airflow (max)	87.6 CFM
Static pressure (max)	2.3 mm H2O
Input voltage	12V DC
Input current (max)	0.2A
MTBF	100,000 hours
Radiator dimensions	123 x 30 x 403 mm
Radiator housing material	Aluminum
Radiator fin material	Aluminum
Radiator fan screw threads	6-32

Packaging Box

Box Contents

It is time to take a look at mounting hardware.

Design

Let’s look at this cooler’s design.

Radiator

This cooler is entirely made of aluminum material, including its housing. This is a standard design for AIOs. This unit has a dimension of 403 x 123 x 30mm. As usual, our focus is on the thickness, which is 30mm. Adding a 25mm thick fan over would give an overall height of 56mm, including heads of screws.

This is a dense fin stack, and Fractal Design has done well here. The FPI count is 20, so high static pressure fans would be needed. There is a distance of 105mm between any two mounting holes on opposite sides. There is a gap of 15mm between two adjacent mounting holes on a side.

This radiator has 12 channels for coolant flow. Fractal Design has used 6032 threading on mounting holes. Both blocks of this radiator are rounded on corners and have a slim outlook. We have mentioned that this is Asetek’s design based on their 6th generation.

We can see a serial number sticker and a power rating, which is probably of the pump unit. It is 7W using 12VDC.

Each side of the radiator has a protective frame that seems to be riveted. There is no branding of any sort on either of these sides. Unlike most AIOs in the market, this cooler has protective plating right below the mounting holes. This is there to prevent any damage to fins from excessive screwing.

I’ve been hands-on with this Fractal design, and I must say, the planning and execution are top-notch. The radiator boasts straight rotary fittings and substantial couplings, which might add a bit to the thickness.

The 4-port PWM and 2-port digital RGB lighting hub, seamlessly integrated on a sleek black PCB, grabbed my attention. It offers 2 digital RGB headers and 4 PWM headers. Remember, though, that you’ve got one RGB and three PWM slots free due to pre-routed cables occupying some ports.

The labeled PCB helps nail the connections, making fan and RGB setups a breeze. Fractal Design has used a low-permeability rubber tube on this cooler. These tubes have a length of approximately 400mm.

They have a nylon braiding sleeve, which also hides two flat cables. One cable is routed under one tube. This is another well-thought-out execution.

Pump Housing

Let’s look at the pump housing and see what magic Fractal Design has done here regarding customization on top of the Asetek pump. This is a low-profile design standing at 86x75x45mm with fittings. It is circular and made of ABS material. The main body has a diameter of 62mm.

There is a tinted glass pump face over the top. It has a backlit Fractal Design logo and a digital RGB ring using 6x LEDs. We can also see Auto and PWM text there as well. The top frame acts like a switch. It can be rotated to switch from Auto to PWM and vice versa.

This will change the profiles of the fans and pump. These texts are white color backlit. We can spot a diffuser running on the border up top. It is not in a white frosted like many other solutions carry.

The above picture shows white color backlighting on Fractal text. White color lighting is on the ring as well. Auto and PWM text remain backlit when the switch is activated for a few seconds. This shot was taken during this time. Sorry for the poor quality.

Here, we are activating the auto function, which will immediately stop the loud noise from fans. Here, we are activating the PWM function, which is a default function. This mode will keep fans and pumps running at full speed.

Since we are at it, let’s briefly see what each mode does. In a standard configuration, users are expected to connect all three fans to the integrated fan hub, and only one cable would be connected to a motherboard’s fan header. That cable is coming from the pump’s housing.

Fractal Design prioritizes silent operations in Auto mode with predefined fan curves. Switching modes is done through a physical switch on the housing, ensuring the pump noise stays at or below fan noise (20 dB[A]).

While it minimizes noise, it limits fan performance and increases coolant temperature. In PWM mode, control is through the motherboard, but fans and pumps operate synchronously, restricting independent speed control.

To control them separately, fans must be connected directly to the motherboard, sacrificing hub functionality and increasing overall cost.

Looking at the front side of the housing, we can see a well-sleeved cable coming out from here. This is a 4-pin PWM cable that connects the pump to the power source. Flat cables make cable management and concealment easier.

There is a 3-pin header on the side of the housing. The provided digital RGB cable is to be connected to this port. This angle better shows a design. There is a line between the top and base portion, segregating both so that the top can be switched.

The other or opposite side of the housing has a plain surface. The base below the main housing has latched. Anyone familiar with Asetek will immediately notice it. The mounting rings are attached to these catchers.

Fractal Design has implemented articulating 90° elbow fittings on the pump’s housing.  This would reduce tension on the pump and make the rotation of tubes easier. Overall build quality is top-notch. We can see two cables coming from both tubes and inside the housing. This is a smart design. The cable has a 4-pin PWM connector.

The Fractal Design Celsius+ S36 Dynamic is based on Asetek’s 6th generation pump.

Cooler Fans

It seems like this unit has a sensor to monitor the coolant’s temperature; otherwise, there is no way for it to know if the temperature has crossed 60°C to engage 3500 RPM mode.

This cooler comes with a pre-applied thermal paste, another Asetek design feature. We wiped that paste to take this picture.

Fractal Design has provided 3x X2 GP-12 PWM Dynamic fans. These are non-RGB versions. They are high-performance editions. Each fan has 7x blades in black color. Each blade has notches to diffuse noise from blade/stator interaction, as mentioned by Fractal Design. There is no branded sticker on the center.

One side of the frame has two arrow symbols. These help the user identify the airflow direction and the blades’ spin direction. These are clearly labeled as well. Each mounting corner has a circular-shaped thin layered anti-vibration pad.

The backside of the fan shows the 4-arms assembly. One arm catches the wires coming from the center. This side of the fan has a Fractal Design branded sticker.

Each fan has a 4-pin PWM connector on a flat cable.

Fan’s specifications include:

Dimension	120x120x25mm
Type	4-pin PWM Connector
Speed	500-2000 RPM
Airflow	87.6 CFM
Air Pressure	2.3 mmH₂O
Noise	32.2 dB(A)
Bearing Type	LLS
Lifespan	100000 hours
Input Voltage	12VDC
Input Current	0.20A

 

Installation

We tested the cooler on AMD AM5 with GIGABYTE X670E AORUS MASTER and AMD Ryzen 7 7700X.

Installation on AM5 is straightforward using the clip method. The AMD ring has a catcher on one side; prepare the other, pass a clip through the mounting ring’s armhole, and secure with a thumbnut.

Keep it loose, press on the stock brackets, clean the CPU surface, and carefully place the block. Apply pressure, snug the clip on the other bracket’s catcher, and torque the thumb nuts. Cooler installed.

 

Clearance

This cooler has a dimension of 403x120x30mm without fans. With a fan, this size is 403x123x56mm. This cooler has thicker tube endings, which could obstruct the first DIMM slot. Other than that, there is no clearance issue. You must check that your PC Case has clearance for this size radiator. 403mm is a bit longer, probably due to the integrated fan hub.

Thermal Test

We have used below mentioned configuration to test the performance of this cooler: –

• AMD Ryzen 7 7700X
• GIGABYTE X670E AORUS MASTER
• XPG Lancer RGB 2x16GB @ 6000MHz
• GIGABYTE GeForce RTX 3060 VISION OC Rev.2 [For Display]
• Sabrent Rocket 4 Plus 2TB NVMe SSD [For OS]
• be quiet! Straight Power 11 850W Platinum PSU
• Thermaltake Core P6 TG Snow Edition in an Open Frame Layout

Here is the settings table for testing:

All Cores	5200MHz All Cores
VCore (V)	Auto
Thermal Paste	Alphacool Sub-Zero
Test Run Time	30 minutes CINEBENCH R23.2
Idle Time	10 minutes
Fan/Pump Speed	100% PWM Duty Cycle
Monitoring Software	HWInfo64

This could be due to various reasons like thermal paste application, ambient temperature variation, the mounting pressure of the cooler, etc. This is very why we have listed our variables and their settings. Variables not mentioned are on the Auto setting.

Result

We are seeing a tight competition between two 360mm liquid coolers in the graph, with Fractal Design Celsius+ S36 Dynamic winning by only a 1°C difference.

Noise

We noted a noise output of roughly 55dB(A) on an ambient noise level of 32~33dB(A). The fans and pump were set to run at full speed via BIOS settings. A custom fan curve in this regard would be helpful.

Should You Buy It?

Buy It If:

✅ You demand silent Operation: If you prioritize a silent operation over maximum cooling potential, the Fractal Design Celsius+ S36 Dynamic is designed to run silently in Auto mode, keeping noise at or below 20 dB(A).

✅ You prefer RGB Lighting: For those who enjoy RGB lighting, the cooler is available in Digital RGB (PRISMA) editions, adding a vibrant visual element to your setup.

✅ You value Compatibility Across Platforms: If you have a diverse range of systems, the Celsius+ S36 Dynamic liquid cooler’s compatibility with various Intel and AMD sockets, including the latest AM5 and AM4, makes it a versatile choice.

Don’t Buy It If:

❌ You seek top performance: If you’re keen on maximizing cooling performance and prefer running the pump at its full speed, the limitations in PWM mode might not align with your preferences, as the pump operates at the same PWM duty cycle as the fans.

❌ You operate an Intel LGA1700: If your system utilizes the Intel LGA1700 socket, note that the Fractal Design Celsius+ S36 Dynamic is incompatible. Waiting for further clarification from Fractal Design is advisable.

❌ You are a Custom Fan Curve Enthusiast: If you want to customize the fan curve for optimal performance, the standard configuration in PWM mode may limit your ability to control the pump and fans independently.

Conclusion