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HMX Blue Topaz vs. Gazzew U4Tx

An in-depth look at the HMX Blue Topaz and the Gazzew U4Tx switches—which one is the best fit for you?

Overview

When considering mechanical keyboard switches, the HMX Blue Topaz and the Gazzew U4Tx stand out as unique options to suit different preferences. The Blue Topaz linear switch offers a super smooth actuation and lightweight feel, making typing effortless and pleasurable. With its distinctive glitter housing and clacky sound signature, it provides a visually and audibly satisfying experience. On the other hand, the Gazzew U4Tx tactile switch combines the best of both worlds with a refined sound profile that produces a deep, resonant "thock" when bottoming out and a whisper-quiet topping out. Each press on the U4Tx results in a sharp tactile bump, delivering a luxurious typing experience. While the Blue Topaz is categorized as 'Easy-to-press' and 'Clacky', the U4Tx is categorized as 'Bassy', 'Muted', and 'Sharp'. 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

40g

Actuation force

N/A

Bottom-out force

48g

Bottom-out force

62.5g

Pre-travel

2.00 mm

Pre-travel

N/A

Total travel

3.90 mm

Total travel

3.60 mm

Factory lubed

Yes

Factory lubed

Yes

Stem construction

Standard

Stem construction

Partial box

Stem material

Ly

Stem material

POM

Top housing material

Polycarbonate

Top housing material

Proprietary Gazzew blend

Bottom housing material

Nylon

Bottom housing material

Proprietary Gazzew blend

Mount type

PCB (5-pin)

Mount type

PCB (5-pin)

Spring

22mm single-stage spring

Spring

Stainless steel Korean spring

Housing materials

When comparing the housing materials of the HMX Blue Topaz and the Gazzew U4Tx, we see that they both offer unique qualities that contribute to the overall sound profile of the switch. The Blue Topaz's polycarbonate top housing provides a sharp, high-pitched sound profile, while the U4Tx's proprietary Gazzew blend top housing delivers a rich and deep sound. In contrast, the Blue Topaz's nylon bottom housing creates a deeper and fuller sound, whereas the U4Tx's bottom housing also boasts a rich and deep sound due to its softness. Despite these differences, both switches aim to provide a satisfying typing experience with their distinct sound profiles.

In terms of aesthetics, the Blue Topaz's polycarbonate top housing offers translucency, making it ideal for switches with RGB lighting. On the other hand, the Gazzew U4Tx's proprietary blend top housing may not offer the same level of transparency but provides a unique sound experience with its softness. Similarly, the Blue Topaz's nylon bottom housing may not have the same impact on RGB lighting, but it excels in creating a deep and full sound profile. Conversely, the U4Tx's proprietary blend bottom housing also contributes to a rich and deep sound, enhancing the overall typing experience.

Ultimately, the choice between the Blue Topaz and the Gazzew U4Tx will depend on personal preference and the desired sound profile. Both switches utilize unique housing materials to achieve distinct typing experiences, with the Blue Topaz focusing on a sharper and clearer sound while the U4Tx aims for a richer, deeper sound. Whether you prefer the stiffer polycarbonate top housing of the Blue Topaz or the soft proprietary blend of the U4Tx, both switches offer quality housing materials that contribute to an enjoyable typing experience.

Weight

When comparing the actuation force and bottom out force of the HMX Blue Topaz linear switch and the Gazzew U4Tx tactile switch, it is evident that the Blue Topaz is the lighter option. The Blue Topaz has an actuation force of 40 grams and a bottom out force of 48 grams, while the U4Tx has an actuation force of None grams and a bottom out force of 62.5 grams. In terms of weight, the Blue Topaz is more suitable for longer typing sessions and gaming due to its lighter actuation and bottom out forces. However, some users may prefer the heavier push feel of the U4Tx for a more substantial typing experience. Overall, the choice between these switches depends on individual preferences for actuation force and bottom out force.

Travel distance

The HMX Blue Topaz linear switch has a travel distance of 3.9 mm, slightly longer than the Gazzew U4Tx tactile switch which has a travel distance of 3.6 mm. Both switches fall within the range of shorter travel distances, making them ideal for those looking for quick response times, such as gamers. The Blue Topaz offers a slightly deeper key press compared to the U4Tx, which may be preferred by those who enjoy a more substantial feel when typing. However, both switches will provide a similar level of responsiveness, making them suitable options for those looking for a balance between speed and tactile feedback.

Price comparison

Which switch is more bang for your buck?

The HMX Blue Topaz has an MSRP of $4.00 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Blue Topaz for $3.49.

The Gazzew U4Tx comes in at $6.50 per 10 switches.

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 Blue Topaz linear switch is known for its clacky sound signature, providing a sharp and snappy noise with each key press. On the other hand, the Gazzew U4Tx tactile switch offers a bassy sound profile, with a deeper and richer tone that gives a sense of luxury while typing. Additionally, the U4Tx switch also has a muted quality, ensuring a quieter typing experience overall. The choice between these two switches will ultimately depend on the user's preference for sound characteristics and how they interact with other components of the keyboard setup.

Moving on to the feel of the switches, the Blue Topaz linear switch is praised for its easy-to-press nature, offering minimal resistance and requiring little force to activate. This light actuation force enhances typing comfort and reduces finger fatigue during long typing sessions. In contrast, the Gazzew U4Tx tactile switch provides a sharp tactile bump with high feedback intensity, making each key press distinctive and satisfying. Users who prefer a more pronounced tactile feedback may find the U4Tx switch to be more suitable for their typing needs.

Overall, the Blue Topaz linear switch and the Gazzew U4Tx tactile switch offer unique qualities in terms of sound and feel. While the Blue Topaz excels in providing a clacky sound and easy actuation, the U4Tx stands out for its bassy sound profile and sharp tactile feedback. Both switches have their own strengths and can cater to different preferences and typing styles. Ultimately, users can expect a high-quality typing experience with either switch option, ensuring a gratifying and personalized mechanical keyboard setup.

Conclusion

Therefore, when choosing between the HMX Blue Topaz linear switch and the Gazzew U4Tx tactile switch, consider the following guidelines. If you prefer a lighter actuation force, a smooth and clacky sound, and an easy-to-press typing experience, the Blue Topaz may be the perfect match for you. On the other hand, if you enjoy a medium actuation force, a refined "thock" sound profile, and a sharp tactile bump with each keypress, the U4Tx could be the ideal choice. Ultimately, whether you prioritize a light and smooth typing experience or a medium force with a pronounced tactile feedback, both switches offer unique qualities that can enhance your overall typing satisfaction.

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