HMX FJ400 vs. Cherry MX Purple RGB
An in-depth look at the HMX FJ400 and the Cherry MX Purple RGB switches—which one is the best fit for you?
Overview
When it comes to choosing the perfect mechanical keyboard switch, the HMX FJ400 and Cherry MX Purple RGB stand out as two distinct yet compelling options. The HMX FJ400, categorized as a linear switch, is known for its smooth keystrokes and balanced sound profile, making it an excellent choice for gamers seeking rapid responses without tactile interruptions. In contrast, the Cherry MX Purple RGB, a tactile switch, provides a refined typing experience with its noticeable bump and medium-strength feedback, appealing to typists who appreciate a sensory cue with each keystroke. While the FJ400 may be ideal for those favoring speed and silence, the Cherry MX Purple RGB caters to users who thrive on the tactile sensation and auditory feedback that these switches offer. However, let's dive in a bit deeper beyond generalities so you can best decide on the switch that suits your needs.
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
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
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 comparing the housing materials of the HMX FJ400 and the Cherry MX Purple RGB, there are both similarities and differences worth noting. The FJ400 features a POM top housing, while the MX Purple RGB boasts a nylon top housing. POM, or polyoxymethylene, is known for creating a unique sound profile that is deeper and more muted than other materials. Conversely, nylon, being a softer plastic, tends to absorb sound, producing a fuller and rounder acoustic experience. Although the two materials differ in composition, they both contribute to a satisfying sound profile, indicative of their ability to reduce harshness and foster pleasant auditory feedback during typing.
Both switches utilize nylon for their bottom housings, illustrating a shared trait that enhances sound quality. The nylon construction in both cases allows for a deeper and fuller sound output, attributed to its sound-absorbing properties. This means that when pressed, both switches generate a relatively similar auditory experience due to the nylon's ability to dampen sound, ensuring that the bottom-out sound remains cohesive across both models. As a result, users can expect a rounded acoustic signature from both the FJ400 and the MX Purple RGB when hitting the keys, despite their differing top housing materials.
The overall typing experience can be influenced by the combination of top and bottom housing materials in each switch. While the FJ400's POM top housing impacts the sound generated while releasing a key, the nylon bottom housing significantly contributes to the bottom-out feel and sound. On the other hand, the MX Purple RGB relies on its nylon housing for both top and bottom to create a consistent acoustic quality. This integration means that while the two switches approach sound dampening differently, they ultimately yield a fulfilling typing experience. By utilizing both POM and nylon strategically, the FJ400 leverages unique sound properties, whereas the MX Purple RGB adheres to a classic approach that consistently produces enriched, rounded sound feedback.
Weight
When comparing the HMX FJ400 linear switch and the Cherry MX Purple RGB tactile switch, notable differences exist in their actuation forces. The FJ400 requires a slightly heavier actuation force of 50 grams, compared to the lighter 45 grams of the MX Purple RGB, making the latter preferable for users seeking a less strenuous typing experience. This difference is particularly significant for individuals who spend extended hours typing or gaming, as a lighter actuation force can reduce finger fatigue. However, the FJ400 also has a bottom out force of 58 grams, indicating a firmer feel when the key is fully pressed down. In contrast, the bottom out force for the Cherry MX Purple RGB is unavailable, meaning we cannot make a direct comparison there. Overall, those who prefer a more robust typing experience may lean towards the FJ400, while those favoring comfort in prolonged use may opt for the Cherry MX Purple RGB switch due to its lower actuation force.
Travel distance
The HMX FJ400 linear switch has a travel distance of 3.8 mm, while the Cherry MX Purple RGB tactile switch features a travel distance of 4 mm. This makes the FJ400 slightly shorter than the MX Purple, providing a more responsive feel for those who prioritize quick keystrokes, which can be advantageous for gaming. In contrast, the Cherry MX Purple offers a longer travel distance, appealing to users who prefer a more substantial typing experience with a pronounced depth in their keystrokes. Ultimately, if you're looking for faster response times, the FJ400 may be the better choice, whereas if you enjoy a more traditional, deep keystroke, the Cherry MX Purple would suit you well.
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 Purple RGB has an MSRP of $6.19 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the MX Purple RGB for $5.79.
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 offers a balanced sound profile, providing a smooth and relatively quiet experience compared to more clicky alternatives. In contrast, the Cherry MX Purple RGB switch produces a more pronounced noise, thanks to its tactile bump, which is audible and can be satisfying for those who enjoy a bit of acoustic feedback while typing or gaming. However, the overall sound output of both switches can heavily depend on the keyboard build and the type of keycaps used, so you may find that environmental variables play a significant role in the final auditory experience for either switch.
Regarding feel, the FJ400 is designed to deliver a smooth linear motion that many users find appealing for both typing and gaming. There’s a consistent and uninterrupted keypress, making it easier to glide through long sessions without tactile interruptions. On the other hand, the Cherry MX Purple RGB switch offers a refined tactile experience characterized by a short, medium-strength bump that provides noticeable feedback at the actuation point. This tactile feedback can enhance typing precision and can be particularly satisfying for users who prefer a bit of resistance on key presses, leading to a distinctly different tactile engagement than the FJ400.
In conclusion, both switches cater to different user preferences when it comes to sound and feel. The FJ400 is a solid choice for those seeking a calm and smooth typing experience, while the Cherry MX Purple RGB speaks to enthusiasts who appreciate tactile feedback accompanied by an audible click. Ultimately, both switches excel in their own right, and your choice will depend on whether you prioritize a linear experience or a tactile bump in your mechanical keyboard journey.
Conclusion
To conclude, your choice between the HMX FJ400 linear switch and the Cherry MX Purple RGB tactile switch should align closely with your typing preferences and intended usage. If you prefer a smooth, uninterrupted keystroke with a moderate actuation force, the FJ400 is an excellent choice, especially for gaming or tasks requiring quick, repetitive key presses. Its balance between sound and feel ensures a versatile experience that can accommodate various typing styles, making it suitable for both casual users and those who type extensively. On the other hand, if you enjoy a tactile bump that provides feedback during each keystroke, the Cherry MX Purple RGB switch is ideal for you, as it offers a noticeable tactile response that can enhance your typing accuracy and satisfaction. This is particularly advantageous for writers or programmers who appreciate the sensory feedback for each key press. Ultimately, your choice should reflect whether you favor a smooth keystroke experience or a tactile one, ensuring that your mechanical keyboard meets your specific needs and elevates your overall typing experience.
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