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The HMX Serene Green and MMD Princess Linear Ultra switches are both standard MX mechanical switches of the linear breed. They both feature standard stem shape, 42 g actuation, 3.60 mm total travel, however, they come with different top housing (modified PA12 vs PC), bottom housing (modified POM vs PA66), stem material (modified UPE vs LY), spring (22 mm KOS single-stage vs 21.4 mm extended), bottom-out force (46 g vs 48 g), pre-travel (2 mm vs 1.90 mm). That said, they are not too similar. Let's check out this side-by-side specs rundawn with details, availability -- and even current prices -- to figure out which one fits you the best!
The HMX Serene Green is a linear standard MX mechanical switch with modified PA12 top housing, modified POM bottom housing, and modified UPE stem (standard shape). It features a 22 mm KOS single-stage spring. The 42g actuation occurs at 2mm. The 46g bottom-out occurs at 3.60mm. Factory lubing? Yes! Designed by M Studio. Manufactured by HMX. | The MMD Princess Linear Ultra is a linear standard MX mechanical switch with PC top housing, PA66 bottom housing, and LY stem (standard shape). It features a 21.4 mm extended spring. The 42g actuation occurs at 1.90mm. The 48g bottom-out occurs at 3.60mm. Extra: Light diffuser. Factory lubing? Yes! Manufactured by MMD. |
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| Name | HMX Serene Green | MMD Princess Linear Ultra |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | modified PA12 | PC |
| Bottom housing | modified POM | PA66 |
| Stem material | modified UPE | LY |
| Stem shape | standard | standard |
| Spring | 22 mm KOS single-stage | 21.4 mm extended |
| Actuation | 42 g | 42 g |
| Bottom-out | 46 g | 48 g |
| Pre-travel | 2 mm | 1.90 mm |
| Total travel | 3.60 mm | 3.60 mm |
| Lube | Factory lubing? Yes! Mixed GPL105&GPL205 on leaf spring, stem feet, and bottom housing rails. | Factory lubing? Yes! |
| Designer | M Studio | - |
| Manufacturer | HMX | MMD |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the MMD Princess Linear Ultra is not available at the moment, while the HMX Serene Green can be found in 1 stores.
Clicking the links below take you to some notable keyboard shops offering HMX Serene Green and MMD Princess Linear Ultra switches. When accepted, the prices indicated already include the discount - use the KBDNEWS coupon code at checkout to claim your saving!
Prices, discounts, and stock status are checked regularly; however, changes since the last update cannot be ruled out. Everything here is for informational purposes only. Check the product pages for the latest prices!
Comments on HMX Serene Green switches | Comments on MMD Princess Linear Ultra switches |
HMX Serene Green switches come with HMX's newly developed POM bottom housing, and it is also the first HMX switch that utilizes POM as its housing material. The modified UPE stem and POM bottom housing create an even fuller and more bassy sound signature than other existing HMX switches. The bottom-out feel is still as solid and firm. They don't feel overly soft because the stem is made of UPE – unikeyboards.com. | The MMD Princess Ultra Thock switches are the latest variant of the MMD Princess Series and were specially designed and manufactured for the Bridge75 keyboard. As usual with MMD Princess, the switches type very well and have an even deeper sound than the Princess V4 – Monacokeys. Produced by the latest mold, the new Princess Ultra switch offers smoother and more consistent typing feedback. We've also improved the factory lubrication and bottom material, elevating the "thock" sound profile to a new level – qwertyqop. |
