HMX FJ400 vs. Cherry MX Silent Red
An in-depth look at the HMX FJ400 and the Cherry MX Silent Red switches—which one is the best fit for you?
Overview
When it comes to choosing a mechanical keyboard switch, two options that stand out are the HMX FJ400 and the Cherry MX Silent Red, both of which belong to the linear switch category. The FJ400 is celebrated for its balanced sound profile, placing it as a versatile choice for typists who appreciate a satisfying yet unobtrusive experience. In contrast, the Cherry MX Silent Red mirrors the classic characteristics of the somewhat heavier MX Red but adds a crucial feature: its silent operation. This makes it the go-to option for those in noise-sensitive environments who still seek the rewarding feel of a linear switch. Each switch offers distinct advantages depending on your preferences—whether you prioritize sound levels or a smooth, satisfying keystroke. 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
50g
Actuation force
45g
Bottom-out force
58g
Bottom-out force
N/A
Pre-travel
2.00 mm
Pre-travel
1.90 mm
Total travel
3.80 mm
Total travel
3.70 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T2
Stem material
pom
Top housing material
POM
Top housing material
Nylon
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
Stainless steel
Housing materials
When examining the housing materials of the HMX FJ400 and the Cherry MX Silent Red, one can observe both similarities and distinct differences that influence the typing experience. The FJ400 utilizes a POM top housing, which is known for producing a unique, deeper sound profile that is relatively muted. This contrasts with the Cherry MX Silent Red, which features a nylon top housing that is more classic in the realm of switch materials. The nylon top delivers a deeper, fuller sound primarily due to its softer composition, which absorbs sound more effectively than harder plastics. As such, while the FJ400 creates a unique acoustic character with its POM top, the Silent Red opts for a conventional approach that still emphasizes a softened auditory experience.
Both switches feature nylon for their bottom housings, which reinforces their similarity in sound profiling. The nylon material used in both cases contributes to a sound that is duller and rounder, thanks to its inherent acoustic properties. It is noteworthy that the bottom housing of a switch plays a more significant role in the bottom-out sound and tactile feel when pressed. As a result, regardless of the different choices for the top housing material, both switches share a commonality in their bottom housing that provides a cohesive auditory experience characterized by depth and fullness.
Ultimately, even with differing materials in the top housings of the FJ400 and Cherry MX Silent Red, one can expect a similar auditory experience during typing due to the nylon bottom housing used in both switches. The unique qualities imparted by the POM top housing of the FJ400 may create a subtly different sound profile during key releases, while the nylon top of the Silent Red contributes to a more traditional and rounded sound. Nevertheless, the synergy between the soft and sound-absorbing nature of the nylon bottom in both switches ensures that users will enjoy a satisfying and pleasing auditory output despite variances in the top housing materials.
Weight
When comparing the HMX FJ400 linear switch and the Cherry MX Silent Red linear switch, notable differences emerge in their actuation forces. The FJ400 requires a force of 50 grams to actuate, while the MX Silent Red's actuation force is lighter at 45 grams. This means that those who prefer a lighter switch for longer typing sessions may find the Silent Red more suitable for comfort and ease of use. In terms of bottom out force, the FJ400 reaches a bottom out force of 58 grams, which provides a more substantial feel when a key is fully pressed down. On the other hand, the bottom out force for the MX Silent Red is unavailable, making it difficult to compare that aspect directly. However, many users generally report that a lack of a defined bottom out force in a switch can provide a softer landing which may appeal to gamers and typists who dislike a pronounced bottoming out sensation. Overall, if you're looking for a lighter typing experience, the Cherry MX Silent Red would be the way to go, whereas the HMX FJ400 offers a heavier and potentially more tactile typing experience.
Travel distance
The travel distances of the HMX FJ400 linear switch and the Cherry MX Silent Red linear switch are quite similar, with the FJ400 measuring 3.8 mm and the MX Silent Red slightly shorter at 3.7 mm. The difference of just 0.1 mm suggests that users might not experience a significant variation in feel between the two switches, allowing for similar results in typing or gaming performance. For those who favor a more responsive experience, the Cherry MX Silent Red may appeal with its shorter travel distance, catering to a quicker actuation that gamers often seek. Conversely, the FJ400's longer travel distance may offer a more pronounced tactile feedback, which some users might prefer for a more deliberate typing experience. Ultimately, the choice between these switches can come down to personal preference for either a slight edge in responsiveness or a deeper key press.
Price comparison
Which switch is more bang for your buck?
The HMX FJ400 has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the FJ400 for $3.29.
The Cherry MX Silent Red has an MSRP of $6.00 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the MX Silent Red for $4.15.
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 it comes to sound, the HMX FJ400 linear switch provides a balanced auditory profile that sits comfortably between louder mechanical switches and quieter options, making it versatile for various environments. In contrast, the Cherry MX Silent Red caters specifically to those who prioritize quietness in their typing experience. It features a muted sound that minimizes the characteristic clack of mechanical switches, complemented by a thocky and low-pitched tone, creating a deep and satisfying acoustic feedback without the intrusion of sharp sounds. This level of sound control makes the MX Silent Red particularly suitable for noise-sensitive settings, allowing for an enjoyable typing experience without disturbing others.
In terms of feel, the FJ400 is a balanced option, though specific tactile descriptions are lacking. This contrasts with the Cherry MX Silent Red, which is noted for its textured feel. The texture in these switches adds a level of noticeable friction during key presses, catering to users who find comfort and satisfaction in the feedback of a textured switch. While some may prefer a completely smooth typing experience, the tactile nature of the MX Silent Red can enhance the overall typing engagement for those who appreciate a bit of grip with each keystroke.
Overall, both the HMX FJ400 and Cherry MX Silent Red cater to different preferences within the mechanical keyboard community. The FJ400 strikes a versatile balance in sound while lacking detailed information on tactile feedback. Conversely, the MX Silent Red excels by combining a quiet operation with a distinct textured feel. Ultimately, while you may experience differing qualities between the two, the FJ400 offers a more balanced sound profile, whereas the MX Silent Red provides a unique, quieter experience with tactile feedback, allowing you to choose based on your own feel and sound preferences.
Conclusion
To conclude, your choice between the HMX FJ400 linear switch and the Cherry MX Silent Red linear switch ultimately depends on your specific needs and preferences. If you’re seeking a balanced sound profile with a more pronounced typing feel, the FJ400 might be your best option. Its medium bottom out force of 58 grams offers a satisfying tactile feedback, which many typists appreciate for both gaming and writing purposes. Additionally, the sound characteristics of the FJ400 can provide a pleasing acoustic experience without being overly loud, making it a solid choice for general use. On the other hand, if you find yourself in a noise-sensitive environment—such as a shared workspace or home office—the Cherry MX Silent Red is likely the better fit. It delivers a muted and thocky sound profile that keeps your key presses discreet while retaining the comfortable, slightly heftier feel akin to the classic MX Red. With the Silent Red, you can enjoy a smooth typing experience without disturbing those around you. Therefore, your decision hinges on whether you prioritize a more engaged auditory feedback or a whisper-quiet operation.
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