HMX FJ400 vs. Gateron Smoothie

Overview

When considering mechanical keyboard switches, the HMX FJ400 and Gateron Smoothie stand out as two prominent linear options, each with its own unique attributes. The FJ400 is celebrated for its balanced sound profile, positioning it as a versatile choice for both typists and gamers alike, providing a satisfying experience without overwhelming auditory feedback. In contrast, the Gateron Smoothie shines with its all-POM construction, offering exceptional smoothness and a delightful thocky sound signature, making it an intriguing option for those who prioritize both tactile satisfaction and auditory pleasure. While the FJ400 strikes a harmonious balance, the Smoothie breaks the price barrier without sacrificing quality, appealing to budget-conscious enthusiasts. However, let's dive in a bit deeper beyond generalities so you can best decide on the right switch for you.

By the numbers

HMX FJ400 Linear

Gateron Smoothie Linear

$3.50

$3.29 per 10

$3.00

$2.60 per 10

Learn moreLearn more

Housing materials

When comparing the housing materials of the HMX FJ400 and the Gateron Smoothie, it’s noteworthy that both switches utilize POM (Polyoxymethylene) for their top housing. This shared material results in a unique sound profile characterized by a deeper tone and a more muted quality, enhancing the auditory experience during typing. The use of POM in both switches underscores the designers' intent to create a pleasant acoustic environment that promotes a satisfying typing session. This similarity in top housing material indicates that users can expect comparable sound characteristics when typing on both switches, making each option appealing for those who prioritize sound aesthetics.

Contrastingly, the FJ400 employs a nylon bottom housing while the Smoothie features POM for its bottom housing. Nylon is known for being a softer plastic, contributing to a distinctive deeper and fuller sound profile due to its sound-absorbing qualities. This characteristic helps in producing a duller and rounder auditory experience. In contrast, the Gateron Smoothie's POM bottom housing does not have the same sound absorption properties as nylon, meaning it will likely produce a sharper sound signature upon bottoming out. This difference in material for the bottom housing can lead to a divided experience in terms of overall sound and keystroke feedback during use, offering users varied tactile sensations based on their preferences.

The interaction between top and bottom housing materials plays a crucial role in the overall performance of each switch. Given that the top housing significantly influences the sound released upon key release, the shared POM top in both switches ensures that the sound profile remains consistent when letting go of a key. Meanwhile, the divergence in bottom housing materials will lead to differing quality in bottom-out sounds, with the nylon bottom on the FJ400 potentially providing a more muted auditory experience in that regard. Ultimately, while both switches share similarities in top housing sound characteristics, the differences in their bottom materials suggest that users might have distinct preferences depending on their desired sound and tactile feedback during typing.

Weight

The HMX FJ400 linear switch and the Gateron Smoothie linear switch exhibit different characteristics in their actuation and bottom out forces, impacting the typing experience they offer. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, classifying it as a medium force switch. In contrast, the Smoothie features a lighter actuation force of just 40 grams; however, its bottom out force remains unknown. This means that while the FJ400 requires more force both to actuate and bottom out, the Smoothie provides a lighter touch at the actuation stage, potentially appealing to those who prefer a more effortless typing experience. For users who type for extended periods, the lighter Smoothie may be more comfortable, while those favoring a more substantial feel may find the heavier FJ400 more satisfying. Overall, the actuation forces clearly differentiate these switches, with the FJ400 being the heavier option due to its higher actuation and bottom out forces.

Travel distance

The HMX FJ400 linear switch features a travel distance of 3.8 mm, while the Gateron Smoothie linear switch has a slightly shorter travel distance of 3.6 mm. This means that the FJ400 offers a bit more depth when pressed down, which may appeal to users who prefer a more substantial feel under their fingers. Conversely, the Smoothie's shorter travel distance can provide quicker actuation, making it an attractive choice for gamers who favor rapid responses during gameplay. Ultimately, those who appreciate a hearty depth in key presses may gravitate towards the FJ400, while those seeking a more responsive feel might opt for the Gateron Smoothie. In this comparison, the FJ400 is the longer switch, and the Smoothie is the shorter one.

Price comparison

Typing experience

In terms of sound, the HMX FJ400 linear switch is characterized by its balanced sound profile, making it a versatile option that sits comfortably in the middle of the auditory spectrum. While specific details of its acoustic performance are not outlined, this implies that it is neither overly loud nor too muted, allowing it to fit various preferences without being distracting. On the other hand, the Gateron Smoothie boasts a thocky sound signature that produces a deep, rich noise when the key is pressed, reminiscent of a satisfying thud or soft knock. Its low-pitched timbre, alongside a more subdued quality, creates a mellow auditory experience that many find appealing.

When it comes to feel, the HMX FJ400 switch lacks specific descriptions regarding its tactile feedback. However, the Gateron Smoothie excels in this area, providing a buttery, creamy, and silky typing experience. Its design promotes a seamless keystroke sensation which minimizes resistance, resulting in an effortlessly smooth interaction with the keyboard. This creates a typing environment that many will delight in, making it ideal for extended use without fatigue.

Considering the overall comparison between the HMX FJ400 and Gateron Smoothie, each switch brings unique auditory and tactile features to the table. The FJ400 offers a balanced sound profile that makes it adaptable for most setups, while the Smoothie is celebrated for its rich, thocky sound and luxurious feel. Although specific feel characteristics of the FJ400 are unknown, the exceptional smoothness of the Smoothie indicates that if you're leaning toward a more tactile and enjoyable typing experience, the Smoothie would likely meet your expectations. Ultimately, both switches cater to a range of user preferences, with the HMX providing versatility and the Gateron Smoothie delivering a satisfying auditory and tactile experience.

Conclusion

To sum up, when deciding between the HMX FJ400 linear switch and the Gateron Smoothie linear switch, consider your personal preferences and typing style. If you prefer a medium actuation force with a balanced sound profile that fits nicely in a variety of settings, the FJ400 would be a solid choice. It’s well-suited for users who appreciate a moderate tactile feedback and a noise level that is not too overpowering, making it ideal for both work and casual typing. On the other hand, if you’re someone who values a notably smooth keystroke experience, combined with a richer, thocky sound signature, the Gateron Smoothie will likely appeal to you. Its buttery and creamy feel offers an effortless typing sensation, making it an excellent option for long typing sessions or gaming, especially if you enjoy that responsive, low-pitched auditory feedback. Ultimately, your decision should align with whether you prioritize a balanced feel and sound, or prefer a more luxurious, satisfying typing experience.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

Gateron Smoothie Linear

$3.00

$2.60 per 10

Learn more