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HMX FJ400 vs. Gateron Smoothie Silver

An in-depth look at the HMX FJ400 and the Gateron Smoothie Silver switches—which one is the best fit for you?

Overview

When it comes to choosing the right mechanical keyboard switch, the HMX FJ400 and the Gateron Smoothie Silver both offer unique characteristics that cater to different preferences. The FJ400 strikes a balance between tactile feedback and acoustics, boasting a sound profile that appeals to users who appreciate a harmonious typing experience without the distractions of louder switches. Conversely, the Gateron Smoothie Silver is designed for speed and responsiveness, featuring an all-POM construction that enables a short travel distance, allowing for lightning-fast actuation. Its thocky sound and unparalleled smoothness make it an appealing choice for those who desire an efficient typing experience with minimal resistance. Both switches are linear, providing a consistent keystroke without tactile bumps, yet they serve distinct purposes that can enhance your typing or gaming experience. 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

1.20 mm

Total travel

3.80 mm

Total travel

3.40 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

POM

Bottom housing material

Nylon

Bottom housing material

POM

Mount type

PCB (5-pin)

Mount type

PCB (5-pin)

Spring

22mm single-stage spring

Spring

22mm extended double-stage spring

Housing materials

When comparing the housing materials of the HMX FJ400 and the Gateron Smoothie Silver, it's evident that both switches utilize POM (Polyoxymethylene) for their top housings, leading to similar acoustic characteristics. Both switches are described as producing an incredibly pleasing and unique sound profile that leans towards the deeper and more muted end of the spectrum. This parallel in top housing materials suggests that users can expect a consistent aural experience when releasing the keys on either switch. The POM top housing effectively contributes to a satisfying sound signature that enhances the overall typing experience, making both switches appealing to enthusiasts who value acoustic performance.

However, the bottom housing materials present a stark contrast between the two switches. The FJ400 incorporates a nylon bottom housing, which is noted for its ability to generate a deeper and fuller sound due to its softer plastic composition. This quality allows the nylon to absorb sound more efficiently than harder plastics, yielding a richer and rounder auditory experience. In contrast, the Smoothie Silver employs a POM bottom housing, which aligns its acoustic performance more closely with that of its top housing. As a result, the Gateron Smoothie Silver may produce a typing experience that lacks the profound depth afforded by nylon since POM is firmer and does not absorb sound in the same manner.

Ultimately, the combined effect of the housing materials leads to different overall auditory and tactile experiences in these two switches. While the FJ400 leverages the softer nylon to create a fuller sound profile, the Gateron Smoothie Silver maintains a consistent acoustic character through its use of POM in both the top and bottom housings. Regardless of these differences, both switches can deliver satisfying typing results due to their quality construction and purposeful material choice. Therefore, while users may choose one over the other based on personal preferences for sound and feel, the underlying design consideration remains to ensure a pleasant typing experience.

Weight

When comparing the actuation force and bottom out force of the HMX FJ400 linear switch and the Gateron Smoothie Silver linear switch, we find notable differences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, which positions it as a medium-force option ideal for those seeking a balanced typing experience. In contrast, the Gateron Smoothie Silver features a lighter actuation force of 45 grams, potentially making it more appealing for users who favor a longer typing session without fatigue. However, the bottom out force for the Smoothie Silver is unavailable, leaving a gap in comparison for the full keystroke experience. Overall, the FJ400 offers a heavier feel with more resistance, while the Smoothie Silver is lighter, catering to those who prefer less forceful actuation. As a result, users should consider their personal preferences for typing feedback and endurance when choosing between these two switches.

Travel distance

The HMX FJ400 linear switch has a travel distance of 3.8 mm, while the Gateron Smoothie Silver linear switch features a shorter travel distance of 3.4 mm. This difference means that the FJ400 provides a slightly deeper key press, which may appeal to those who enjoy a more substantial tactile feel when typing or gaming. In contrast, the Smoothie Silver's shorter travel distance may offer quicker actuation, making it a favorable choice for gamers seeking rapid response times. Overall, if you prefer a more pronounced key press, the HMX FJ400 would be the better option, whereas if you favor a snappier feel, the Gateron Smoothie Silver is ideal for you.

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 Gateron Smoothie Silver has an MSRP of $3.00 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Smoothie Silver for $2.60.

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

In terms of sound, the HMX FJ400 linear switch is recognized for its balanced sound profile, making it versatile for various typing environments. It provides a pleasant auditory experience without being overly loud, which is advantageous for those who prefer a quieter workspace. On the other hand, the Gateron Smoothie Silver switch produces a distinctive thocky sound that many users find appealing. This sound, coupled with the switch's design, creates an auditory satisfaction as you type. While both switches offer unique sound qualities, the overall sound experience may also heavily depend on other factors such as the keyboard layout, case material, and keycap choice, which can influence how pronounced these characteristics are.

When it comes to feel, the FJ400 is particularly notable for its balanced actuation force, providing a satisfying resistance that many typists appreciate. This makes it a dependable choice for both general typing and gaming, as it strikes a middle ground that many users find comfortable. In contrast, the Smoothie Silver switch is engineered for exceptional smoothness and features a feather-light touch, allowing for rapid key presses. The reduced travel distance contributes to its responsiveness, making it an excellent option for competitive gaming where every millisecond counts. Given these differences, the feel between the two switches caters to distinct preferences, with the FJ400 appealing to those who prefer a more traditional typing experience and the Smoothie Silver attracting users seeking quick actuation and a lighter touch.

Overall, both the HMX FJ400 and Gateron Smoothie Silver linear switches offer unique auditory and tactile experiences catered to different types of users. While the FJ400 delivers a balanced sound and a dependable feel, the Smoothie Silver excels in providing a thocky sound profile and ultra-smooth, lightweight keystrokes. Ultimately, the choice between these switches will come down to personal preference regarding sound and feel, ensuring that users can achieve a satisfying typing experience with either option.

Conclusion

To sum up, when deciding between the HMX FJ400 linear switch and the Gateron Smoothie Silver linear switch, consider your typing style and preferences. If you prefer a medium-bottom-out force of 58 grams, the FJ400 might be the better option for you, especially if you enjoy a balanced sound profile and a satisfying tactile feel during use. It's an excellent choice for both typists and gamers who appreciate a solid yet not overly heavy feel. On the other hand, if you’re looking for something that prioritizes speed and responsiveness, the Gateron Smoothie Silver will be your best bet. Its light touch and short travel distance make it ideal for rapid actions in gaming, complemented by its thocky sound and unparalleled smoothness that can enhance your overall typing experience. In essence, if you value a quick, effortless keystroke for competitive gaming, the Smoothie Silver is likely the switch you'll want. Ultimately, your choice will hinge on whether you prefer a balanced, more tactile experience with the FJ400 or a faster, smoother feel with the Gateron Smoothie Silver.

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