ARCTIC MX-4 vs Thermal Grizzly - PhaseSheet PTM
Updated August 2026 — The ARCTIC MX-4 offers better value and longevity, while the Thermal Grizzly - PhaseSheet PTM provides versatility. Overall, the MX-4 is the superior choice.
The ARCTIC MX-4 offers better value and longevity, while the Thermal Grizzly - PhaseSheet PTM provides versatility. Overall, the MX-4 is the superior choice.
Why ARCTIC MX-4 is better
cost
ARCTIC MX-4 is significantly cheaper at £5.68
durability
MX-4 lasts at least 8 years without reapplication
ease of use
MX-4 is easier to apply for beginners
Why Thermal Grizzly - PhaseSheet PTM is better
versatility
PhaseSheet PTM is suitable for various cooling systems
phase change
PhaseSheet PTM has unique phase change technology
thermal cycles
PhaseSheet PTM maintains performance over 10 thermal cycles
Overall score
Specifications
| Spec | ARCTIC MX-4 | Thermal Grizzly - PhaseSheet PTM |
|---|---|---|
| Brand | ARCTIC | Thermal Grizzly |
| Type | Paste | Pad |
| Price | £5.68 | £11.40 |
| Longevity | 8 years | 10 cycles |
| Conductivity | High | Excellent |
Dimension comparison
Overview of the ARCTIC MX-4 and Thermal Grizzly - PhaseSheet PTM
The ARCTIC MX-4 is priced at £5.68, while the Thermal Grizzly - PhaseSheet PTM costs £11.40, making it significantly more expensive. This price difference is notable, especially for users seeking cost-effective thermal solutions. Both products aim to enhance thermal management in CPUs and GPUs, but they utilise different approaches; one is a paste while the other is a pad.
Thermal Conductivity and Performance
The ARCTIC MX-4 boasts extremely high thermal conductivity, attributed to its composition of carbon microparticles. This ensures efficient heat dissipation from the CPU or GPU. The Thermal Grizzly - PhaseSheet PTM also claims excellent thermal conductivity, specifically designed for optimal heat transfer. However, while the MX-4 guarantees its performance over time, the PhaseSheet PTM is solid at room temperature and only liquefies at 45°C, which may impact its initial heat transfer performance.
Application Method
The ARCTIC MX-4 is designed for easy application, with an ideal consistency that allows even beginners to use it effectively. In contrast, the Thermal Grizzly - PhaseSheet PTM is also easy to apply but requires a specific temperature to activate its liquid state. While both products are user-friendly, the MX-4’s straightforward application may appeal to those who prefer a quick and hassle-free process.
Durability and Longevity
The ARCTIC MX-4 is noted for its high durability, lasting a minimum of eight years without the need for reapplication. This long-lasting performance is a significant advantage, especially for users who prefer a maintenance-free solution. On the other hand, the Thermal Grizzly - PhaseSheet PTM provides stable thermal conductivity for approximately ten thermal cycles, which, while commendable, may not match the longevity of the MX-4 in continuous use scenarios.
Safety and Conductivity
Both the ARCTIC MX-4 and Thermal Grizzly - PhaseSheet PTM are non-electrically conductive, making them safe for sensitive electronics. This feature is crucial in preventing short circuits, particularly in high-performance computing environments. While both products prioritise safety, the MX-4's metal-free formula further enhances its reliability over extended use.
Versatility in Application
The MX-4 is designed primarily for CPUs and GPUs, providing a reliable solution for most standard applications. Conversely, the Thermal Grizzly - PhaseSheet PTM is advertised as versatile for various cooling systems, which may appeal to users with diverse thermal management needs. This adaptability can be beneficial for those looking to use the product in multiple setups, although the MX-4's performance remains strong within its designated applications.
User Experience and Feedback
The ARCTIC MX-4 has garnered a reputation for consistent quality and ease of use, particularly for users new to thermal paste application. Meanwhile, the Thermal Grizzly - PhaseSheet PTM, with its unique phase change technology, has received praise for its innovative design, which reduces the pumping effect during solidification. Both products have their strengths, but user preference may ultimately hinge on familiarity and comfort with paste versus pad application.
Which should you buy?
Choosing between the ARCTIC MX-4 and the Thermal Grizzly - PhaseSheet PTM largely depends on your specific needs and budget. If you are looking for an affordable, long-lasting thermal paste that is easy to apply, the ARCTIC MX-4 at £5.68 is the superior choice. However, if you require a versatile thermal pad that excels in specific cooling systems and are willing to invest more at £11.40, the Thermal Grizzly - PhaseSheet PTM could be the right fit. Ultimately, both products provide excellent cooling solutions, but their differing methods and costs will guide your decision.
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