The HMX Cthulhu and HMX Egg Yolk switches are both standard MX mechanical switches of the linear breed. They both feature PC top housing, standard stem shape, 45 g actuation, 2 mm pre-travel, however, they come with different bottom housing (P7 vs PA66 Nylon + S1 center), stem material (M1 POM vs M2), spring (22 mm vs 22 mm single-stage), bottom-out force (50 g vs 53 g), total travel (3.50 mm vs 3.60 mm). That said, they are only slightly 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 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 HMX Egg Yolk is a linear standard MX mechanical switch with PC top housing, PA66 Nylon + S1 center bottom housing, and M2 stem (standard shape). It features a 22 mm single-stage spring. The 45g actuation occurs at 2mm. The 53g bottom-out occurs at 3.60mm. Double-shot bottom housing. Factory lubing? Yes! Designed by HMX. Manufactured by HMX. |
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| Name | HMX Cthulhu | HMX Egg Yolk |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC | PC |
| Bottom housing | P7 | PA66 Nylon + S1 center |
| Stem material | M1 POM | M2 |
| Stem shape | standard | standard |
| Spring | 22 mm | 22 mm single-stage |
| Actuation | 45 g | 45 g |
| Bottom-out | 50 g | 53 g |
| Pre-travel | 2 mm | 2 mm |
| Total travel | 3.50 mm | 3.60 mm |
| Lube | Factory lubing? Yes! | Factory lubing? Yes! |
| Designer | SULAB | HMX |
| Manufacturer | HMX | HMX |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the HMX Cthulhu is much more widely available, but the HMX Egg Yolk is also available in some stores.
Clicking the links below take you to some notable keyboard shops offering HMX Cthulhu and HMX Egg Yolk 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 HMX Egg Yolk 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 Egg Yolk is HMX's first switch with a double-shot bottom housing – and that's exactly what makes the difference in the sound profile: a deliberately engineered S1 post sits in the middle of the PA66 bottom, right where the stem hits. The result is an exceptionally clacky, crisp keypress with a surprisingly full, rounded character – substantial and defined, without letting the classic HMX clack drift into the bright or shrill range. The hardened M2 stem keeps the 3.6mm travel glassy-smooth throughout and adds a poppy snap on bottom-out. Currently considered one of the clackiest linear switches around – ideal for loud, lively builds with character – MonacoKeys. |
