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The HMX Cthulhu and MMD Princess Linear Ultra switches are both standard MX mechanical switches of the linear breed. They both feature PC top housing, standard stem shape, however, they come with different bottom housing (P7 vs PA66), stem material (M1 POM vs LY), spring (22 mm vs 21.4 mm extended), actuation (45 g vs 42 g), bottom-out force (50 g vs 48 g), pre-travel (2 mm vs 1.90 mm), total travel (3.50 mm vs 3.60 mm). That said, they are mostly different. 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 Cthulhu is a linear standard MX mechanical switch with PC top housing, P7 bottom housing, and M1 POM stem (standard shape). It features a 22 mm spring. The 45g actuation occurs at 2mm. The 50g bottom-out occurs at 3.50mm. Factory lubing? Yes! Designed by SULAB. 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 Cthulhu | MMD Princess Linear Ultra |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC | PC |
| Bottom housing | P7 | PA66 |
| Stem material | M1 POM | LY |
| Stem shape | standard | standard |
| Spring | 22 mm | 21.4 mm extended |
| Actuation | 45 g | 42 g |
| Bottom-out | 50 g | 48 g |
| Pre-travel | 2 mm | 1.90 mm |
| Total travel | 3.50 mm | 3.60 mm |
| Lube | Factory lubing? Yes! | Factory lubing? Yes! |
| Designer | SULAB | - |
| 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 available at a single shop at the moment, while the HMX Cthulhu can be found in multiple stores.
Clicking the links below take you to some notable keyboard shops offering HMX Cthulhu 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 Cthulhu switches | Comments on MMD Princess Linear Ultra switches |
HMX Cthulhu is here! Designed in collaboration with SULAB for enthusiasts who love loud, sharp, and clacky typing, it delivers an ultra-clacky, bright sound that stands out on any build. Featuring a smooth M1 modified POM stem and a high-fiberglass P7 bottom housing — the highest fibreglass content HMX has used to date – SerpentKeys. | 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. |
