Gateron CM vs. HMX SU
An in-depth look at the Gateron CM and the HMX SU switches—which one is the best fit for you?
Overview
When it comes to choosing mechanical keyboard switches, the Gateron CM and the HMX SU each offer unique attributes that cater to different user preferences. The Gateron CM stands out with its innovative full nylon housing, which contributes to a richer, deeper sound signature and a smooth typing experience thanks to its impeccable factory lube job. Users seeking a luxurious feel will enjoy the CM's bouncy, dual-staged spring mechanism that delivers a typing sensation reminiscent of gliding on air, making it a top choice for those craving a buttery and polished performance. On the other hand, the HMX SU features a full PA12 housing and a T5 stem, offering a more subtle, yet deep sound profile that appeals to those who prefer a quieter typing experience. While both switches are linear and provide a satisfying typing journey, the Gateron CM leans towards a more pronounced auditory experience, while the HMX SU prioritizes a more understated acoustic environment. However, let's dive in a bit deeper beyond generalities so you can best decide on the best switch for you.
By the numbers
Technical specifications
Actuation force
55g
Actuation force
45g
Bottom-out force
63.5g
Bottom-out force
50g
Pre-travel
2.00 mm
Pre-travel
1.80 mm
Total travel
3.60 mm
Total travel
3.60 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
POM
Stem material
T5
Top housing material
Nylon
Top housing material
Nylon
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
Dual-staged 20mm lengthened gold-plated spring
Spring
22mm single-stage spring
Housing materials
When comparing the housing materials of the Gateron CM and the HMX SU, both switches utilize nylon for their top and bottom housings. This shared choice of material leads to several similarities in their acoustic properties, particularly in how they affect sound profiles during typing. Nylon, known for its softer composition compared to harder plastics, is effective in absorbing sound waves. Users can expect a deeper and fuller sound profile from both switches, as the nylon housings collectively contribute to creating a significantly rounded and less sharp auditory experience while typing. This is especially important for users looking for a quieter typing experience or those who prefer a more tactile and satisfying key press.
Despite using the same nylon material, there may be differences in the overall design or manufacturing processes of the Gateron CM and HMX SU that could affect the subjective typing experience. Both switches will ultimately provide a similar auditory experience due to the inherent qualities of nylon. However, the overall feel, bottom-out sound, and responsiveness may differ slightly based on factors beyond material, such as stem design and compression characteristics. Therefore, while the core material offers a unified base for sound absorption, nuances in their construction may differentiate the tactile feedback each switch provides.
To summarize, the Gateron CM and HMX SU both leverage nylon in their housings, which ensures a consistent sound profile characterized by a deeper and rounder auditory experience. Users can expect similar results from both switches, particularly in terms of acoustics, thanks to the shared use of nylon. Any variations in the user experience would stem from design nuances beyond just the materials, meaning that while the foundation of sound quality is solid, the specific sensory feedback may diverge slightly based on how other elements in each switch interact with the nylon material.
Weight
When comparing the actuation and bottom out forces of the Gateron CM linear switch and the HMX SU linear switch, notable differences emerge in terms of weightiness. The Gateron CM requires an actuation force of 55 grams and a bottom out force of 63.5 grams, categorizing it as medium-heavy, which some users may appreciate for its substantial feel during typing or gaming. In contrast, the HMX SU linear switch is lighter, with an actuation force of 45 grams and a bottom out force of 50 grams, making it ideal for those who type for extended periods and prefer a less strenuous key press. Thus, the Gateron CM is the heavier option and would appeal to users looking for a firmer tactile response, while the HMX SU offers a lighter feel, suitable for effortless typing. Both switches demonstrate a clear distinction in force requirements, which ultimately reflects users' preferences for their typing experience.
Travel distance
Both the Gateron CM linear switch and the HMX SU linear switch have the same travel distance of 3.6 mm, which means that users can expect a similar tactile experience when pressing down on the keys. Since their travel distances are identical, both switches will provide comparable feedback and feel during use. This similarity can lead to consistency in typing performance across different keyboards that utilize these switches. Therefore, whether you choose the Gateron CM or the HMX SU, you are assured of the same travel distance, contributing to a uniform typing experience.
Price comparison
Which switch is more bang for your buck?
The Gateron CM has an MSRP of $4.80 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the CM for $4.25.
The HMX SU has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the SU for $3.29.
Here at Milktooth, we offer the best prices on switches (on average, 27% lower the competition). In addition, we offer free shipping on orders over $49.00. We also offer free returns and exchanges, so you can shop with guaranteed satisfaction.
That said, while price is an important piece of the puzzle, our opinion is that you should ultimately pick the option that most suits your unique preferences since you’ll be using these switches for years to come. In other words, finding something perfect for you is, in our view, the most important criteria.
Typing experience
When comparing the sound profiles of the Gateron CM and HMX SU linear switches, the CM certainly stands out with its deep, bassy, and thocky characteristics. The full nylon housing of the CM contributes to a rich, low-pitched sound that resonates with a satisfying “thud” during key presses and releases, making it a compelling choice for those who appreciate auditory feedback in their typing experience. In contrast, the sound profile of the HMX SU is less articulated; while it features a full PA12 housing which may provide a subtle and relatively deep sound, specifics about its sonic qualities are not documented as extensively. Therefore, while one can expect a more muted sound from the SU, the richness and depth of the CM’s audio feedback is likely to be more pronounced.
In terms of feel, the CM linear switch takes the lead with attributes that suggest an exceptionally smooth and polished typing experience. It’s characterized by a buttery, creamy sensation that feels fluid and effortless while typing, thanks to its factory lube job and dual-staged spring construction. This delivers not just a frictionless experience but also a sense of luxurious gliding over the keycaps. In contrast, details regarding the feel of the HMX SU switch remain unspecified, leaving its tactile experience unknown. Given that tactile feedback is critical to typing enjoyment, the CM’s well-defined characteristics make it a formidable option compared to the uncertain feel offered by the SU.
In conclusion, while both the Gateron CM and HMX SU linear switches serve the role of linear switches effectively, they deliver vastly different experiences. The CM excels in sound quality with its rich, deep audio profile and offers a luxurious, buttery feel that many enthusiasts crave. The SU, lacking in detailed descriptions regarding its sound and feel, may appeal to those who prioritize a more muted profile but potentially compromise on the tactile and auditory satisfaction that the CM provides. If sound and feeling are paramount to your keyboard experience, the CM is likely the better choice, whereas the SU remains a mystery waiting to be explored further.
Conclusion
To conclude, your choice between the Gateron CM linear switch and the HMX SU linear switch ultimately depends on your personal preferences for typing feel, sound, and actuation force. If you prefer a medium-heavy tactile experience with a deeper, richer sound profile, the Gateron CM is an excellent option. Its full nylon housing and impeccable factory lube provide a buttery, polished feel, allowing for a seamless glide with each keystroke. This switch is particularly suitable for those who enjoy a bouncy typing experience and a satisfying thocky sound, making it ideal for both typing and gaming. On the other hand, if you’re looking for something lighter and potentially faster for gaming or quick typing, the HMX SU linear switch may be your better choice. The 50-gram actuation force offers a gentle touch, and while its sound profile is more subtle, it still provides a satisfying typing experience without overwhelming your surroundings. In summary, choose the Gateron CM if you value a heavier, richer typing sensation, but opt for the HMX SU if you desire a lighter, quicker response with a more understated sound signature.
Mentioned in this article
