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HMX FJ400 vs. Gateron G Pro 3.0 White

An in-depth look at the HMX FJ400 and the Gateron G Pro 3.0 White switches—which one is the best fit for you?

Overview

When choosing a mechanical keyboard switch, two popular options that stand out are the HMX FJ400 and the Gateron G Pro 3.0 White, both of which are linear switches designed to provide a smooth typing experience. The HMX FJ400 strikes a balance within the HMX Film switch lineup, offering a well-rounded sound profile that appeals to users who appreciate a blend of tactile feedback and auditory discretion. In contrast, the G Pro 3.0 White excels as an economical choice for typists seeking a lightweight actuation force of just 38 grams, making each keystroke feel almost effortless. This switch also features a frosted light diffuser that enhances RGB lighting, paired with a medium-high pitch that delivers satisfying auditory feedback. While the FJ400 is ideal for those who prefer a versatile typing experience with a balanced sound, the G Pro 3.0 White is perfect for those who prioritize a sensitive feel and vibrant key lighting. 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

38g

Bottom-out force

58g

Bottom-out force

45g

Pre-travel

2.00 mm

Pre-travel

2.00 mm

Total travel

3.80 mm

Total travel

4.00 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

Polycarbonate

Bottom housing material

Nylon

Bottom housing material

Nylon

Mount type

PCB (5-pin)

Mount type

Plate (3-pin)

Spring

22mm single-stage spring

Spring

20mm lengthened stainless steel spring

Housing materials

The HMX FJ400 and the Gateron G Pro 3.0 White utilize different materials for their top housings, resulting in distinct sound profiles that cater to different preferences among users. The FJ400 features a polyoxymethylene (POM) top housing, which is known for producing a deeper and more muted sound when typing. In contrast, the G Pro 3.0 White is made with polycarbonate, a material that generates a sharper and crisper sound profile thanks to its stiffer properties. This difference in material not only influences the auditory experience but also affects the overall feel of the switches. While the FJ400's POM top housing might appeal to those who enjoy a more subdued acoustic experience, the G Pro 3.0 White's polycarbonate top caters to users seeking clarity and resonance in their typing sound.

Interestingly, both switches utilize nylon for their bottom housings, which creates a deeper and fuller sound profile. The nylon material, being softer, effectively absorbs sound, leading to a duller and rounder auditory quality regardless of the top housing. This shared aspect of the G Pro 3.0 and FJ400 emphasizes the interplay between the housing materials. While the nylon housing remains consistent in both switches, the bottom-out sound features of both switches are heavily influenced by this shared nylon material. Thus, typing on both switches results in a similar feel and sound depth at the bottom of the stroke, creating some unifying experience despite the contrasting top housing materials.

Ultimately, the differences between the FJ400's POM top housing and the G Pro 3.0's polycarbonate top become apparent when analyzing their impact on sound signature. While the POM contributes to a warm, subdued tone, the polycarbonate offers a bright and lively sound, making each switch unique in its character. Nevertheless, since both switches feature nylon for their bottom housings, they share a common foundation that significantly influences the overall acoustic profile. Consequently, users seeking variety in sound may find that experimenting with different top housings while relying on the consistent performance of the nylon base allows them to tailor their typing experience to their preferences, offering a balance of both worlds.

Weight

The HMX FJ400 linear switch and the Gateron G Pro 3.0 White linear switch present a clear contrast in their actuation and bottom out forces, appealing to different user preferences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, classifying it as a medium-weight switch. In contrast, the G Pro 3.0 White features a lighter actuation force of 38 grams and a bottom out force of 45 grams. This means that the FJ400 requires more effort to actuate and bottom out compared to the G Pro 3.0 White, making the latter a better choice for those who prefer a lighter touch for extended typing or gaming sessions. Conversely, users who seek a more substantial typing experience may gravitate towards the heavier FJ400 switch due to its increased resistance. Thus, if you're looking for a lighter and more responsive option, the G Pro 3.0 White is the way to go, whereas the FJ400 offers a firmer, more tactile feel.

Travel distance

When comparing the travel distances of the HMX FJ400 linear switch and the Gateron G Pro 3.0 White linear switch, a notable difference is evident. The FJ400 has a travel distance of 3.8 mm, while the G Pro 3.0 White features a slightly longer travel distance of 4.0 mm. This indicates that the G Pro 3.0 White offers a more pronounced keypress experience, making it more suitable for users who prefer a deeper feel and a more traditional typing experience. In contrast, gamers and those seeking faster response times might lean towards the FJ400 with its shorter travel distance of 3.8 mm, as it offers a quicker actuation. Therefore, if responsiveness is a priority, the FJ400 would be a better option, while the G Pro 3.0 White is likely the choice for those who appreciate a more substantial key travel.

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 G Pro 3.0 White has an MSRP of $3.40 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the G Pro 3.0 White for $3.27.

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 experience that fits comfortably in a variety of environments. While full details on its acoustic profile are not specified, it is positioned as a reliable option for those wanting versatility. In contrast, the Gateron G Pro 3.0 White linear switch is characterized by a medium-high pitch, which offers a clacky and crisp auditory feedback. This switch produces a sharp and snappy sound upon actuation, making it particularly appealing for typists who enjoy a more expressive auditory experience. The G Pro White's sound can range from clacky to subdued depending on the materials surrounding it, such as your keyboard's construction and keycap choice, but it typically leans towards a bright and percussive signature.

In terms of feel, the FJ400 does not have explicitly detailed characteristics available, but its balanced nature suggests it offers a satisfactory typing experience without extreme features. On the other hand, the Gateron G Pro 3.0 White excels in delivering an effortless typing experience with easy-to-press functionality, requiring only 38g of actuation force. This switch is described as creamy and silky, leading to a smooth, buttery sensation that minimizes resistance during key presses. It ensures comfort over prolonged typing sessions, making it suitable for both gaming and productivity. Overall, the G Pro White provides a feathery touch that alleviates finger fatigue while remaining user-friendly.

In summary, the HMX FJ400 linear switch and the Gateron G Pro 3.0 White linear switch cater to different preferences, particularly in sound and feel. The FJ400 aims for a balanced sound profile suitable for various tasks, while the G Pro White focuses on a more expressive auditory experience paired with a lightweight, smooth typing feel. Although the specific characteristics of the FJ400 are less defined, both switches promise a satisfactory performance, making them suitable choices depending on whether you prefer a neutral acoustic experience or a more engaging auditory feedback with effortless keystrokes.

Conclusion

To conclude, when deciding between the HMX FJ400 linear switch and the Gateron G Pro 3.0 White linear switch, consider your typing preferences and intended usage. If you prefer a medium bottom-out force of 58 grams that offers a well-rounded balance of sound and feel, the FJ400 is an excellent choice, particularly suited for those who appreciate a more deliberate, tactile experience that can also hold its own in a variety of settings. On the other hand, if you favor a lighter touch with an easy-to-press action, the G Pro 3.0 White, featuring a bottom-out force of only 45 grams, will be more to your liking, especially for extended typing sessions where comfort and minimal finger fatigue are priorities. Furthermore, the G Pro's creamy feel and clacky sound profile can enhance the joy of typing, making it a great fit for delicate typists or for use in shared spaces where you want a bit of auditory feedback without being overly disruptive. Ultimately, the choice between these two switches hinges on whether you value balanced performance or a light, effortless touch in your typing experience.

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