HMX FJ400 vs. Gateron Jupiter Banana

Overview

When it comes to mechanical keyboard switches, the choice often boils down to personal preference in typing feel and sound profile. The HMX FJ400 linear switch stands out for its balanced sound profile, making it a versatile option for those who prefer a smooth, uninterrupted keystroke without tactile bumps or audible clicks. This switch caters to gamers and typists alike who appreciate a swift, consistent response during extensive use. In contrast, the Gateron Jupiter Banana tactile switch offers a more engaging typing experience, characterized by its pronounced tactile feedback and polished feel. With softer backlight effects and enhanced with two-stage springs for a reliable return, the Jupiter Banana appeals to users who enjoy feeling a distinct actuation point while also benefiting from high-quality construction. Each switch has unique qualities—while the FJ400 excels in seamless typing, the Jupiter Banana provides satisfying tactile feedback. 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 Jupiter Banana Tactile

$3.50

$3.29 per 10

$2.80 per 10

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Housing materials

When comparing the housing materials of the HMX FJ400 and the Gateron Jupiter Banana, noticeable differences emerge, notably in their top housings. The FJ400 employs a POM (Polyoxymethylene) top housing, which is known for generating a deeper and more discreet sound profile. This sound is described as muted, providing an auditory experience that is both unique and pleasing. Conversely, the Jupiter Banana utilizes polycarbonate for its top housing, a material recognized for delivering a sharper and higher-pitched sound. The rigidity of polycarbonate contributes to a clearer and more resonant audio profile. Aesthetic considerations also come into play; polycarbonate's translucency makes it particularly advantageous for RGB lighting setups, enhancing the visual experience alongside the auditory one.

On the other hand, both the HMX FJ400 and the Gateron Jupiter Banana share a commonality in their bottom housing materials, as both switches feature nylon. This classic material is praised for creating a deeper, fuller sound profile, which is preferably softer and absorbs sound effectively. As a result, both switches exhibit similar auditory characteristics in the lower end of their sound spectrum due to the nylon bottom housings. This congruence means that when typing on both switches, users can expect a rounder, more muted sound to resonate from the bottom-out sound, which is influenced primarily by the nylon material used.

Ultimately, while the two switches differ significantly in their top housing materials—affecting the sound profile during key releases—they maintain a sense of cohesion through their shared nylon bottom housings. This combination of contrasting top materials creates a nuanced auditory experience where the FJ400’s deeper tones from the POM top complement the resonate qualities from the nylon bottom, while the Jupiter Banana’s sharper, more extensive sound is shaped by its polycarbonate top. This dual-material approach results in unique sound profiles that cater to diverse user preferences, allowing for tailored auditory experiences while typing.

Weight

The HMX FJ400 linear switch and the Gateron Jupiter Banana tactile switch present distinct characteristics in terms of actuation and bottom out forces. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, while the Jupiter Banana requires a higher actuation force of 59 grams and a bottom out force of 69 grams. This makes the FJ400 the lighter option overall, providing a softer touch ideal for users who favor long typing sessions or prolonged gaming. In contrast, the Jupiter Banana, with its heavier actuation and bottom out forces, is better suited for those who enjoy a more substantial typing experience, as the additional resistance can deliver a more pronounced feedback with each keystroke. While both switches are categorized as medium to medium-heavy, the HMX FJ400 is preferable for users seeking less strain and more comfort, whereas the Gateron Jupiter Banana caters to those who appreciate a firmer typing feel.

Travel distance

When comparing the travel distances of the HMX FJ400 linear switch and the Gateron Jupiter Banana tactile switch, there is a clear distinction: the FJ400 features a travel distance of 3.8 mm, while the Jupiter Banana has a shorter travel distance of 3.4 mm. This difference means that the FJ400 offers a deeper feel, providing a more substantial keypress experience, which some users might prefer for its satisfying depth. In contrast, the shorter travel distance of the Jupiter Banana can be advantageous for those who prioritize quick response times, making it a preferred choice for gamers. Ultimately, the choice between these switches comes down to whether one prefers the more pronounced travel of the FJ400 or the quicker actuation of the Jupiter Banana.

Price comparison

Typing experience

When evaluating the sound profile of the HMX FJ400 linear switch, it can be characterized as balanced, providing a middle ground that avoids extremes, making it suitable for a variety of environments. In contrast, the Gateron Jupiter Banana tactile switch produces a distinctive sound that is high-pitched and resonant. These switches emit a sharp and crisp auditory feedback which can create an engaging typing atmosphere. The FJ400's neutrality means that it won't draw attention in quieter settings, while the Jupiter Banana's brighter sound will resonate more, particularly in a lively environment. However, it's important to note that the acoustic experience of both switches can be influenced by factors like the choice of keyboard plate and keycap material.

In terms of feel, the FJ400 offers a linear experience, which typically means a consistent depression without tactile feedback, allowing for seamless and unhindered keystrokes. On the other hand, the Jupiter Banana boasts a polished and creamy tactile sensation that results from either high-quality materials or effective factory lubing. This creates a silky-smooth typing experience, with a noticeable tactile bump that can enhance typing enjoyment. In practical terms, users can expect an effortless gliding motion with the Jupiter Banana, in stark contrast to the FJ400's smooth but direct and uncomplicated linear feel.

In summary, the HMX FJ400 linear switch and Gateron Jupiter Banana tactile switch cater to different preferences. The FJ400 is balanced in sound and offers an uninterrupted typing experience, while the Jupiter Banana stands out with its engaging high-pitched sound and tactile sensory feedback. Ultimately, your choice between these switches will hinge on whether you prioritize a smooth, linear action or a more textured and auditory typing experience.

Conclusion

To conclude, the choice between the HMX FJ400 linear switch and the Gateron Jupiter Banana tactile switch ultimately depends on your personal preferences and typing requirements. If you lean towards a medium bottom-out force and appreciate a balanced sound profile for a quieter and more subdued typing experience, the FJ400 might be the ideal option for you. It caters to those who want to enjoy an uninterrupted typing environment, making it a good choice for both work and casual use. On the other hand, if you prefer a more tactile feedback with a medium-heavy feel and are drawn to sharper, more resonant sounds, the Gateron Jupiter Banana will likely meet your needs more effectively. The polished and creamy texture of the Jupiter Banana enhances your typing experience with its smooth keystrokes and satisfying bump, making it suitable for gaming or typing sessions where feedback is crucial. Thus, consider what aspects of a switch—force, sound, and feel—matter most to you as you make your decision.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

Gateron Jupiter Banana Tactile

$2.80 per 10

Learn more