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HMX Blue Topaz vs. SP-Star RedBlue

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

Overview

When it comes to choosing a mechanical keyboard switch, the HMX Blue Topaz and the SP-Star RedBlue are both popular options in the linear switch category. The Blue Topaz stands out for its super smooth actuation and lightweight feel, providing users with a seamless typing experience. Its visually appealing housing, adorned with glitter, adds a touch of glamour to the keyboard while also producing a satisfying clacky sound. On the other hand, the RedBlue linear switches offer a medium-light typing experience with a low-pitched sound profile. They are described as having a neutral and polished feel, suitable for those looking for a mild and thocky typing sensation. Ultimately, both switches have their own unique characteristics that cater to different preferences. 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

57g

Pre-travel

2.00 mm

Pre-travel

2.00 mm

Total travel

3.90 mm

Total travel

4.00 mm

Factory lubed

Yes

Factory lubed

Yes

Stem construction

Standard

Stem construction

Standard

Stem material

Ly

Stem material

POM

Top housing material

Polycarbonate

Top housing material

Polycarbonate

Bottom housing material

Nylon

Bottom housing material

Polycarbonate

Mount type

PCB (5-pin)

Mount type

PCB (5-pin)

Spring

22mm single-stage spring

Spring

Gold plated

Housing materials

The HMX Blue Topaz and the SP-Star RedBlue switches both feature a polycarbonate top housing, which results in a sharper, higher-pitched, and crisper sound profile. The stiffness of polycarbonate creates a more clear and resonant sound, making it an excellent choice for those looking for a vibrant and defined typing experience. Additionally, the translucency of polycarbonate makes it ideal for showcasing RGB lighting effects, adding a visually appealing element to the overall setup. While both switches share this top housing material, they may vary in their bottom housing material, which can impact the overall sound and feel of typing on the switches.

On the other hand, the Blue Topaz utilizes a nylon bottom housing, known for producing a deeper and fuller sound profile compared to the polycarbonate bottom housing of the RedBlue. Nylon's softer nature absorbs more sound, resulting in a duller and rounder sound that some users may prefer for a more muted typing experience. This contrast in bottom housing materials highlights how different combinations can influence the overall sound and typing feel of a switch. Despite these differences, both switches aim to provide a satisfying typing experience by balancing the qualities of their respective top and bottom housing materials.

Overall, the choice between the HMX Blue Topaz and the SP-Star RedBlue switches comes down to personal preference in terms of sound profile and typing feel. While both switches share a polycarbonate top housing for a sharp and clear sound, the Blue Topaz's nylon bottom housing offers a deeper sound profile compared to the RedBlue's polycarbonate bottom housing. Whether you prefer a crisper sound with the RedBlue or a fuller sound with the Blue Topaz, both switches showcase the impact that housing materials can have on the overall typing experience. Ultimately, selecting the right switch will depend on individual preferences for sound, feel, and aesthetics.

Weight

In comparing the actuation force and bottom out force of the HMX Blue Topaz linear switch and the SP-Star RedBlue linear switch, it is evident that the Blue Topaz is the lighter of the two. The Blue Topaz has an actuation force of 40 grams and a bottom out force of 48 grams, making it suitable for those who prefer a lighter typing experience. On the other hand, the RedBlue has an unknown actuation force and a bottom out force of 57 grams, which is slightly heavier and falls into the medium-light category. The actuation force of a switch determines the force required to trigger a keystroke, while the bottom out force measures the pressure needed to fully press the key. For those who prefer a lighter typing feel, the Blue Topaz would be the ideal choice, while the RedBlue would be better suited for those who prefer a slightly heavier push when typing. While both switches offer different force requirements, they can provide similar results based on individual preferences.

Travel distance

The travel distance of the HMX Blue Topaz linear switch is 3.9 mm, slightly shorter than the 4 mm travel distance of the SP-Star RedBlue linear switch. In general, a shorter travel distance can lead to faster response times, making it a popular choice among gamers. However, some may find short travel distances to feel abrupt. On the other hand, a longer travel distance can provide a more substantial feel when pressing the key. Ultimately, the choice between the two switches will depend on personal preference for either a quicker, more responsive key press or a more substantial, deliberate feel. Both switches offer similar results in terms of travel distance, so the decision ultimately comes down to individual preference.

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 SP-Star RedBlue has an MSRP of $5.80 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the RedBlue for $5.40.

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

The HMX Blue Topaz linear switch is well-known for its satisfyingly clacky sound, offering users a sharp and distinct auditory feedback with each key press. On the other hand, the SP-Star RedBlue linear switch provides a more neutral, low-pitched sound profile that is mellow and bass-heavy, making it a quieter option compared to the Blue Topaz. In terms of feel, the Blue Topaz is loved for its easy-to-press nature, requiring minimal force to activate and providing a light and effortless typing experience. Conversely, the RedBlue switch offers a mild and polished feel, with smooth key travel and a gentle typing experience that appeals to a broader range of users.

Overall, while the Blue Topaz and RedBlue switches offer different sound and feel qualities, users can expect similar results in terms of performance and functionality. Both switches provide a pleasant typing experience, albeit with varying levels of sound and tactile feedback. When choosing between the two, it ultimately comes down to personal preference in terms of sound profile, tactile feel, and typing experience. Regardless of choice, both switches are sure to enhance your overall typing experience and provide a high-quality mechanical keyboard option for your setup.

Conclusion

To sum up, if you are looking for a smooth and lightweight typing experience with a distinctive clacky sound, the HMX Blue Topaz linear switch would be the ideal choice for you. On the other hand, if you prefer a medium-light typing experience with a low-pitched and polished feel, the SP-Star RedBlue linear switch would better suit your preferences. Ultimately, the decision between these two switches will depend on your personal preference for actuation force, sound profile, and overall typing feel.

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