Nickel-Plated Copper Cooler with Optimized Hybrid Microfin Structure
One of the key changes compared to the standard Mycro water cooler is the microfins in the copper base plate. The cooler now uses a hybrid structure with two different types of microfins. Fourteen shallow and wide fins are positioned over the I/O die, where less heat is generated. In the high-heat area, there are 29 deeper fins with narrow ridges, resulting in narrow and tall microfins. The slot width is 0.2 millimeters each. The Pro version is also generally thinner, and the cooler's design is optimized for better flow. The nickel coating on the copper base plate allows the AM5 Mycro Direct-Die Pro RGB V1 to be used with liquid metal between the CPU die and the cooler. Liquid metal provides the best possible heat transfer from the silicon die to the copper cooler. Nickel plating is necessary to prevent the gallium-based liquid metal from diffusing into the copper. The nickel barrier ensures that reapplying the liquid metal is generally not necessary.
As a direct-die water cooler, the AM5 Mycro Direct-Die Pro RGB V1 also serves as a contact frame, replacing the Socket Actuation Mechanism (SAM) of the motherboard. This ensures that the processor is pressed into the motherboard socket with optimal pressure.
Tempered Acrylic Glass, RGB Lighting, and Aluminum Cover
The design of the AM5 Mycro Direct-Die Pro RGB V1 includes an anodized aluminum cover with RGB LED lighting underneath. These LEDs illuminate the tempered acrylic glass and can be controlled via a 3-pin ARGB header (+5V/DATA/GND) from the motherboard. The AM5 Mycro Direct-Die Pro RGB V1 is connected to the custom water-cooling loop via an inlet and outlet with G1/4-inch threads. The acrylic glass undergoes a tempering process after milling, which relieves internal stresses in the material. This ensures that no stress cracks develop in the acrylic glass over long periods of use, as can happen with untreated acrylic glass.
Pro Version with Up to 9°C Better Temperatures
The optimizations in the AM5 Mycro Direct-Die Pro RGB V1 allow the cooler to bring an AMD Ryzen 9 7900X (5.4GHz, 1.3V Vcore) down to 61.4 degrees Celsius, while the non-Pro Mycro cools the CPU to 70.5°C.** The internal structure improvements in the AM5 Mycro Direct-Die Pro RGB V1 result in a temperature improvement of about 9 Kelvin compared to the non-Pro version. The custom loop of the test system consists of a Watercool MO-RA3, including four 200mm fans from Noctua. A Keyence FD-X flow sensor was used, offering the advantage of not creating any resistance in the water loop. The Xylem Lowara D5 pump speed was around 3,400 revolutions per minute. Conductonaut Extreme liquid metal was used on the die of the delidded processor. Please note that delidding the processor is done at your own risk and voids the warranty! **It should be noted that the temperature improvements achieved depend on several factors. Besides the quality of individual processors ("Silicon Lottery"), test results are influenced by room temperature and the cooling used, among other things. For example, in a custom water-cooling setup, cooling performance is dependent on factors such as pump speed, fans, and radiators used. The values provided are indicative and may vary higher or lower in individual cases.
Quality without compromise: Made in Germany
The AMD Mycro Direct Die Pro RGB V1 is manufactured to the highest quality standards at our production site in Germany. The entire production chain is continuously monitored by our expertly trained staff. Particular attention is paid to the microfins, which are specially protected from contamination during the production chain. All AMD Mycro Direct Die Pro RGB V1 are also subjected to a compressed air test (600 mbar) as part of quality control after assembly. Each water cooler is provided with a serial number and a corresponding pressure test report is included. Warning: Removing the heat spreader ("delidding") of a processor is done at your own risk! Delidding the CPU voids the manufacturer's warranty! Damage caused by delidding the CPU is not covered by the manufacturer's warranty! Removing the Socket Actuation Mechanism (SAM) from the motherboard may void the motherboard manufacturer's warranty!
| Connector type: | 3-pin |
|---|---|
| Lighting: | digital aRGB LEDs |
| Material: | Aluminum, acrylic, nickel-plated copper |
| Socket manufacturer: | AMD |
| Threading: | G1/4" female |
| Color: | black, silver |
Compatibility Note:
The AM5 Mycro Direct-Die Pro RGB V1 is:
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Generally compatible with Ryzen 9000 series CPUs, including X3D variants
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NOT compatible with the Ryzen 5 7400F
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NOT compatible with Ryzen 8000G series APUs
(As of September 2025)
High Performance Cooling Solutions – Made in Germany
The AMD Mycro Direct-Die Pro RGB V1 is a water cooler optimized for the AMD AM5 platform, featuring a nickel-plated copper baseplate and RGB lighting. Compared to the standard version, the Pro version offers a hybrid structure of microfins and reduced flow resistance. The direct-die cooler is placed directly on the silicon of the delidded AMD CPU. A current list of all verified compatible processors is available online.
The AMD Mycro Direct-Die Pro RGB V1 features a hybrid structure with two different sizes of microfins and a jet plate for optimized flow. The cooler's cold plate is made of nickel-plated copper and is mounted directly on the CPU chip. For this, the Socket Actuation Mechanism (SAM) of the motherboard is removed, and the processor must be delidded. The nickel plating of the cooler plate creates a barrier layer, preventing gallium-based liquid metal from diffusing into the copper, making multiple applications of liquid metal usually unnecessary.
Between the cold plate and the anodized aluminum cover, there is acrylic glass, which undergoes an annealing process after milling to relieve internal stress. This ensures that no stress cracks form in the acrylic glass over time, unlike hardened acrylic glass. RGB LEDs are located under the aluminum cover and are controlled via a 3-pin ARGB header (+5V/DATA/GND) through the motherboard. The LEDs illuminate the acrylic glass under the cover and the G1/4-inch connectors on the cover.
Thermal Grizzly AM5 Mycro Direct-Die Pro RGB V1
- Brand: Thermal Grizzly
- Product Code:TG-MY-DD-P-RGB-AMD-V1
- Availability:In Stock
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¥31,191
- Ex Tax:¥28,355
Tags: Thermal Grizzly, dorect-die, water block, AMD







