Watercool HEATKILLER IV Basic AM4 vs Watercool HEATKILLER IV PRO Acetal: Spec Comparison
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This watercool heatkiller iv basic am4 vs heatkiller iv pro acetal comparison looks at two distinct CPU water blocks from the same brand. Both units use an acetal base and share a high-flow internal design with revised micro fins for better heat transfer. The main difference lies in their scope and construction. The Basic model is a smaller, AM4-only block, while the PRO version is larger, supports both AM4 and AM5 sockets, and uses a copper base for broader compatibility.
Key differences
| Aspect | Watercool HEATKILLER IV Basic AM4 Acetal CPU Block | Watercool HEATKILLER IV PRO Acetal CPU Water Block |
|---|---|---|
| Socket Compatibility | AM4 | AM4, AM5 |
| Base Material | Acetal | Copper |
| Dimensions | 2.6 x 2.32 x 0.67 inches | 5.51 x 4.33 x 1.97 inches |
| Weight | 0.32 kilograms | 11.2 ounces |
| Model Number | 18017 | 18015Â |
Which one should you choose?
Choose Watercool HEATKILLER IV Basic AM4 Acetal CPU Block if
- You need a compact block for a small form factor AM4 build.
- You prefer a lighter water block to reduce motherboard strain.
- You are using an AM4 socket and want a dedicated, smaller footprint.
Choose Watercool HEATKILLER IV PRO Acetal CPU Water Block if
- You want compatibility with both AM4 and AM5 sockets.
- You prefer a copper base for potentially different thermal characteristics.
- You need a larger block that fits 16/10 or 19/13 fittings easily.
Verdict: The Basic model suits users with AM4 systems who prioritize a smaller, lighter footprint. The PRO version is better for those needing AM5 support or a larger copper-based block. Choose based on your socket needs and case space.
HEATKILLER IV Basic vs PRO Specs
Socket Compatibility
You need to check which motherboards fit your build. The Watercool HEATKILLER IV Basic AM4 Acetal CPU Block supports only the AM4 socket. It is designed specifically for that platform. The Watercool HEATKILLER IV PRO Acetal CPU Water Block covers a much wider range. It supports AMD 939, 940, AM2, AM2+, AM3, AM3+, FM2, FM2+, AM4, and AM5. If you plan to upgrade your CPU or use an older board, the PRO version offers more flexibility. The Basic version is limited to AM4 only.
Material
Both blocks use the same base material for contact with the CPU. The Watercool HEATKILLER IV Basic AM4 Acetal CPU Block uses acetal for its base. The Watercool HEATKILLER IV PRO Acetal CPU Water Block also uses acetal. This material choice is consistent across both models. Acetal provides a smooth surface for the thermal paste interface. Since both products share this material specification, there is no difference in the base construction material. You get the same thermal interface surface type regardless of which model you choose.
Dimensions
Space inside your case matters for airflow and component clearance. The Watercool HEATKILLER IV Basic AM4 Acetal CPU Block has a length of 2.6 inches, a width of 2.32 inches, and a height of 0.67 inches. The Watercool HEATKILLER IV PRO Acetal CPU Water Block is significantly larger. It measures 5.51 inches in length, 4.33 inches in width, and 1.97 inches in height. The PRO model covers more of the CPU surface area but requires more clearance. You must ensure your case and RAM can accommodate the larger footprint of the PRO block.
Weight
The weight of the water block affects the stress on your motherboard socket. The Watercool HEATKILLER IV Basic AM4 Acetal CPU Block weighs 0.32 kilograms. The Watercool HEATKILLER IV PRO Acetal CPU Water Block weighs 11.2 ounces, which is approximately 0.32 kilograms as well. Both blocks have very similar mass. This means the mechanical load on the CPU socket is comparable for both options. You do not need to worry about excessive weight strain on either model compared to the other.
Fittings Compatibility
Tube fitting support is crucial for your custom loop setup. The Watercool HEATKILLER IV PRO Acetal CPU Water Block explicitly supports 16/10 and 19/13 fittings. This gives you options for different tubing sizes. The data for the Watercool HEATKILLER IV Basic AM4 Acetal CPU Block does not list specific fitting compatibility. You may need to check the manual or assume standard support, but the PRO version guarantees these sizes. If you use specific tubing diameters, the PRO block provides clearer compatibility information.
Which block fits your build best
AM5 future-proofing seekers
You need a block that supports your current AM4 socket but also works with AM5. The HEATKILLER IV PRO Acetal covers both AM4 and AM5 sockets. This wider compatibility protects your investment if you upgrade your CPU later. The Basic model only supports AM4, limiting your future upgrade path.
Compact case builders
You have a small form factor case and need a low-profile water block. The HEATKILLER IV Basic AM4 measures 2.6 inches in length and 0.67 inches in height. This is significantly smaller than the PRO version, which is 5.51 inches long and 1.97 inches high. The Basic block fits tighter spaces better.
High-flow loop enthusiasts
You want improved fitting compatibility for your tubing. The HEATKILLER IV PRO Acetal supports both 16/10 mm and 19/13 mm fittings. This flexibility helps you connect various tube sizes without adapters. The Basic model does not list this specific fitting compatibility in its published specifications, making the PRO a safer choice for varied setups.
The products compared
Watercool HEATKILLER IV Basic AM4 Acetal CPU Block
Best for: AM4 custom loops prioritizing flow and heat transfer
- 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 an acetal CPU water block designed for AMD AM4 sockets. It features a revised cooling structure with finer micro fins to increase the contact surface for the coolant. The unit measures 2.6 by 2.32 inches and weighs 0.32 kilograms. This block prioritizes high flow performance through a larger jet structure. It suits users building a custom loop for AM4 processors who need a reliable, high-flow base plate.
Pros
- Compatible with AMD AM4 sockets
- Constructed from durable acetal material
- Features finer micro fins for increased heat transfer surface area
- Designed for higher flow performance with a bigger jet structure
Cons
- Limited to AM4 socket compatibility
- No mention of included mounting hardware for all AM4 variants
- Basic model lacks premium aesthetic finishes found in PRO versions
Good fit if
- You are building a custom loop for an AM4 processor
- You prioritize high flow rates for your pump setup
- You want a proven cooling structure with micro fins
Skip if
- You use an AMD AM5 socket
- You need a block with integrated RGB lighting
- You prefer copper or nickel-plated bases for aesthetics
Verdict: The Watercool HEATKILLER IV Basic AM4 Acetal offers a high-flow design tailored for AM4 systems. It fits builders who value efficient heat transfer through micro fins and reliable acetal construction.
Watercool HEATKILLER IV PRO Acetal CPU Water Block
Best for: AMD AM4/AM5 high-flow builds
- Socket Compatibility
- AM4, AM5
- Material
- Copper
- Dimensions
- 5.51 × 4.33 × 1.97 inches
- Weight
- 11.2 ounces
View on Amazon: Watercool HEATKILLER IV PRO Acetal CPU Water Block Affiliate link
This Watercool block uses an acetal baseplate for AMD AM4 and AM5 sockets. It features a high-flow internal design with larger jets and receptacles. The cooling structure integrates jets directly into the cooler, removing the separate jet plate. It supports 16/10 and 19/13 fittings. The copper construction measures 5.51 by 4.33 inches. It suits users seeking improved flow and compatibility with older and newer AMD platforms.
Pros
- Acetal baseplate material
- Supports AM4 and AM5 sockets
- High-flow design with larger jet structure
- Compatible with 16/10 and 19/13 fittings
Cons
- Copper cold plate may be heavier than all-metal alternatives
- No mention of integrated RGB lighting or pump control
- Basic design lacks digital display or sensor integration
Good fit if
- You use AMD AM4 or AM5 processors
- You prefer high-flow tubing connections like 16/10
- You want a reliable baseplate material
Skip if
- You need RGB lighting effects
- You require smart pump control features
- You use Intel-only sockets
Verdict: Watercool HEATKILLER IV PRO AM4/AM5 delivers solid cooling for AMD platforms with its high-flow design and dual-socket support. It fits builders who prioritize flow rate and fitting compatibility over digital features.
Specifications side by side
| Spec | Watercool HEATKILLER IV Basic AM4 Acetal CPU Block | Watercool HEATKILLER IV PRO Acetal CPU Water Block |
|---|---|---|
| Socket Compatibility | AMD AM4, AM5 | AM4, AM5 |
| 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 | 11.2 ounces |
| Color | Black | Copper |
| Model | 18017 | 18015Â |
Frequently asked questions
Which block is better for a high-flow custom loop?
Both units prioritize high flow rates. The HEATKILLER IV Basic AM4 is a compact 2.32-inch wide block. The PRO Acetal version is significantly larger at 4.33 inches wide. Larger blocks often accommodate more internal flow channels. Both use micro fins to enhance heat transfer efficiency.
Can the HEATKILLER IV PRO fit AM5 motherboards?
Yes, the HEATKILLER IV PRO Acetal supports both AM4 and AM5 sockets. The Basic AM4 model only supports the older AM4 platform. If you plan to upgrade your CPU socket later, the PRO model offers the necessary compatibility without needing a new block.
What material are these CPU blocks made from?
Both blocks use acetal for their construction. This material is known for durability and smooth internal surfaces. Smooth surfaces help maintain high flow rates by reducing friction. The PRO model features a copper color finish, while the Basic AM4 version is black.
How much space does each block take on the motherboard?
Dimensions vary significantly between the two models. The Basic AM4 measures 2.6 inches in length and 0.67 inches in height. The PRO Acetal is much larger, measuring 5.51 inches in length and 1.97 inches in height. Check your case clearance for the larger PRO model.
Is there a weight difference between the two blocks?
The weight difference is notable due to size variations. The Basic AM4 block weighs 0.32 kilograms. The PRO Acetal block weighs 11.2 ounces. Heavier blocks may require better motherboard support. Ensure your motherboard can handle the additional weight of the larger PRO unit.
Do these blocks include digital monitoring features?
The provided specifications do not list any digital displays or sensors. These are standard water blocks focused on heat transfer. You will need separate hardware to monitor fluid temperature. The design prioritizes flow and cooling performance over electronic feedback features.