Watercool HEATKILLER IV Basic AM4 vs Watercool HEATKILLER IV PRO Acrylic (2026): Key Differences
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This guide compares the watercool heatkiller iv basic am4 vs heatkiller iv pro acrylic. Both blocks share a revised internal cooling structure designed to lower temperatures by up to 3°C compared to older models. They also feature high-flow designs with larger jet structures for better performance. The main difference lies in their construction and compatibility. One uses acetal for a clean look, while the other uses acrylic for visibility. You also need to check socket support carefully.
Key differences
| Aspect | Watercool HEATKILLER IV Basic AM4 Acetal CPU Block | Watercool HEATKILLER IV PRO Acrylic AMD Water Block |
|---|---|---|
| Socket Compatibility | AM4 | AM4, AM5 |
| Material | Acetal | Acrylic |
| Color | Black | Copper |
| Dimensions | 2.6 x 2.32 x 0.67 inches | 5.51 x 4.33 x 1.97 inches |
| Weight | 0.32 kg | 10.9 ounces |
Which one should you choose?
Choose Watercool HEATKILLER IV Basic AM4 Acetal CPU Block if
- You only use an AM4 processor and want a compact block.
- You prefer a solid acetal base over transparent materials.
- You need a lighter water block for your build.
Choose Watercool HEATKILLER IV PRO Acrylic AMD Water Block if
- You plan to upgrade to an AM5 socket in the future.
- You want to see the coolant flow through an acrylic top.
- You need compatibility with both 16/10 and 19/13 fittings.
Verdict: Choose the Basic AM4 if you have a fixed AM4 system and value a smaller, opaque design. Pick the PRO Acrylic if you need AM5 support or prefer the visibility of an acrylic top. Both offer similar thermal performance due to their shared internal structure.
HEATKILLER IV Basic vs PRO Acrylic
Socket Compatibility
The Watercool HEATKILLER IV PRO Acrylic supports a wider range of AMD sockets, including AM4 and AM5. This makes it future-proof for newer processors. The HEATKILLER IV Basic AM4 is limited to AM4 sockets only. If you plan to upgrade your CPU platform later, the PRO version offers better longevity. The Basic model is strictly for current AM4 systems. Choose the PRO if you need AM5 support.
Material
The HEATKILLER IV Basic AM4 uses acetal for its construction, which provides a durable and clean aesthetic in black. The HEATKILLER IV PRO Acrylic features an acrylic top, allowing for visual customization or clear views of the coolant. Material choice affects both appearance and potential for leaks or clouding over time. Acetal is robust, while acrylic offers transparency. Pick the material that matches your case theme.
Size and Fit
Dimensions vary significantly between the two blocks. The HEATKILLER IV PRO Acrylic is larger, measuring 5.51 inches in length and 4.33 inches in width. The HEATKILLER IV Basic AM4 is more compact at 2.6 inches long and 2.32 inches wide. Larger size may impact clearance with RAM or VRM heatsinks. The Basic model fits in tighter spaces. Check your case and component clearance before buying.
Weight
Weight indicates the mass of the block, which can affect stress on the motherboard socket. The HEATKILLER IV PRO Acrylic weighs 10.9 ounces. The HEATKILLER IV Basic AM4 weighs 0.32 kilograms, which converts to approximately 11.3 ounces. The weights are nearly identical, so neither poses a significantly higher risk of sagging. Both blocks have similar mass profiles. This factor does not heavily influence your decision between these two specific models.
Fitting Compatibility
The HEATKILLER IV PRO Acrylic explicitly supports 16/10 and 19/13 fittings, improving tubing compatibility for various setups. The HEATKILLER IV Basic AM4 data does not list specific fitting sizes. This lack of information means you must verify compatibility separately for the Basic model. The PRO version offers clearer guidance for tubing selection. If you use standard 10mm or 12mm tubing, the PRO data confirms support.
Choose the right HEATKILLER block
AM5 upgrade seekers
You need a block that supports both AM4 and AM5 sockets. The HEATKILLER IV PRO Acrylic covers this wider range, allowing for future CPU upgrades without replacing the cooler. Its acrylic top and copper base provide a distinct visual style compared to the basic model, fitting modern builds that prioritize longevity and socket versatility.
Minimalist AM4 users
You only require support for the AM4 socket and prefer a compact, understated design. This basic block is made of acetal and features a clean black finish. Its smaller dimensions and lighter weight make it a straightforward choice for standard AM4 builds where extra socket compatibility or premium materials are not necessary for your specific needs.
High flow performance fans
You want improved fitting compatibility for various tubing sizes. The PRO model explicitly supports both 16/10 and 19/13 fittings, offering greater flexibility for your custom loop. While both blocks share high-flow internal structures, the PRO version provides better connectivity options for diverse tubing standards, ensuring a secure and leak-free connection for your specific hardware setup.
The products compared
Watercool HEATKILLER IV Basic AM4 Acetal CPU Block
Best for: AM4 users prioritizing flow rate and thermal performance
- Socket Compatibility
- AMD AM4, AM5
- Material
- Acetal (POM), Copper
- Thread Size
- G1/4
- Dimensions
- 2.6 × 2.32 × 0.67 inches
- Weight
- 0.32 kilograms
View on Amazon: Watercool HEATKILLER IV Basic AM4 Acetal CPU Block Affiliate link
The Watercool HEATKILLER IV Basic is a CPU water block designed for AMD AM4 sockets. It features an acetal body in black with a revised internal cooling structure. This design aims for a temperature decrease of up to 3°C compared to previous models. The block includes a real high-flow design with bigger jet structures. It measures 2.6 inches in length and weighs 0.32 kilograms. It suits users seeking a straightforward, high-flow cooling solution for their AM4 processor.
Pros
- Compatible with AMD AM4 sockets
- Acetal construction for durability
- Revised cooling structure for up to 3°C decrease
- High-flow design with larger jet receptacles
Cons
- Limited to AM4 socket compatibility only
- No mention of RGB lighting or aesthetic customization
- Basic acetal material lacks premium metal finish
Good fit if
- You are building an AM4 system and need a reliable, high-flow block
- You prefer a no-frills, functional design over aesthetic features
- You want a cooler with a proven high-flow internal structure
Skip if
- You use an AM5 socket and need broader compatibility
- You require RGB lighting or custom aesthetic options
- You are looking for a premium metal base material
Verdict: Watercool HEATKILLER IV Basic AM4 Acetal Block is a functional choice for AM4 users who prioritize cooling performance and flow rate over visual flair. It delivers a revised internal structure for better thermal results in a compact, durable acetal body.
Watercool HEATKILLER IV PRO Acrylic AMD Water Block
Best for: AMD AM4/AM5 builds with clear tubing
- Material
- Copper
- Socket Compatibility
- AM4, AM5
- Dimensions
- 5.51 × 4.33 × 1.97 inches
- Weight
- 10.9 ounces
View on Amazon: Watercool HEATKILLER IV PRO Acrylic AMD Water Block Affiliate link
This water block features an acrylic top and copper base. It supports AMD AM4 and AM5 sockets. The design includes a high-flow jet structure integrated directly into the cooler. It accepts 16/10 and 19/13 fittings. The unit measures 5.51 by 4.33 by 1.97 inches. It weighs 10.9 ounces. This block suits builders seeking reliable flow and broad socket support.
Pros
- Supports AMD AM4 and AM5 sockets
- High-flow design with integrated jet structure
- Compatible with 16/10 and 19/13 fittings
- Acrylic top with copper base
Cons
- Acrylic top may scratch more easily than metal
- Heavier than standard aluminum blocks
- No RGB lighting specified in data
Good fit if
- You use an AMD AM4 or AM5 processor
- You prefer a transparent top for visual appeal
- You use 16/10 or 19/13 tubing fittings
Skip if
- You require RGB lighting effects
- You need compatibility with Intel sockets
- You prefer a lightweight aluminum construction
Verdict: Watercool HEATKILLER IV PRO Acrylic delivers solid cooling performance for AMD platforms with its high-flow design. It is ideal for users who want clear visual access to the coolant without the weight of a full metal block.
Specifications side by side
| Spec | Watercool HEATKILLER IV Basic AM4 Acetal CPU Block | Watercool HEATKILLER IV PRO Acrylic AMD Water Block |
|---|---|---|
| Socket Compatibility | AMD AM4, AM5 | not stated |
| Material | Acetal (POM), Copper | Copper |
| Thread Size | G1/4 | not stated |
| Dimensions | 2.6 × 2.32 × 0.67 inches | 5.51 × 4.33 × 1.97 inches |
| Weight | 0.32 kilograms | 10.9 ounces |
| Color | Black | Copper |
| Model | 18017 | 18019 |
Frequently asked questions
Is the HEATKILLER IV Basic AM4 made of metal?
No. The HEATKILLER IV Basic AM4 uses an acetal body. This material is durable and lightweight. It weighs 0.32 kilograms. The block is black in color. Acetal provides a functional look without the visual flair of glass or acrylic.
Does the HEATKILLER IV PRO Acrylic support AM5 processors?
Yes. This model supports both AM4 and AM5 sockets. The HEATKILLER IV Basic AM4 only works with AM4. If you plan to upgrade your AMD platform later, the PRO Acrylic version is the better choice for compatibility.
What color is the HEATKILLER IV PRO Acrylic?
The base is copper. The top is clear acrylic. This design lets you see the coolant flow. The HEATKILLER IV Basic AM4 is black acetal. It does not offer transparent viewing of the internal water path.
Which block is heavier?
The HEATKILLER IV PRO Acrylic is heavier. It weighs 10.9 ounces. The Basic AM4 model weighs 0.32 kilograms. The PRO Acrylic is larger overall. Its dimensions are 5.51 inches long by 4.33 inches wide. The Basic model is more compact.
Can I use the HEATKILLER IV Basic with an AM5 CPU?
No. The Basic AM4 model is limited to AM4 sockets only. It will not fit AM5 motherboards. You must choose the HEATKILLER IV PRO Acrylic if you need support for newer AMD processors. It covers both socket types.
Is the HEATKILLER IV Basic AM4 suitable for high flow rates?
Yes. This block is designed for high flow rates. It features a revised internal structure for better thermal results. It is ideal for users who prioritize cooling performance and flow rate over visual appearance. It delivers efficient heat transfer.
Does the PRO Acrylic block have a metal top?
No. It features a clear acrylic top. The base is copper. This combination allows for clear visual access to the coolant. The HEATKILLER IV Basic AM4 has a solid black acetal body. It does not offer transparent viewing capabilities.