Royalaxe X68 HE vs Sikakeyb Castle CK75
Get the Royalaxe X68 HE for its aluminum case and 65% footprint, or the Sikakeyb Castle CK75 for its 75% layout, gasket mount, sound dampening, and stated 8000 Hz polling rate.
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Which one should you get?
Get the
Royalaxe X68 HE
Hot-swappable
Build quality in the bottom 15% of 65% boards under $200.
- Aluminum case.
- 65% layout for a more compact keyboard footprint.
- Listed as hot-swappable, with compatibility limited to magnetic switches.
- Magnetic switches only. Standard MX switches will not fit.
- 65% layout. No function row and no numpad.
Get the
Sikakeyb Castle CK75
Sound dampening
Build quality in the bottom 10% of 75% boards under $200.
- 75% layout, larger than a 65% layout.
- Gasket mount and sound dampening.
- Listed 8000 Hz polling rate.
- Magnetic switches only. Standard MX switches will not fit.
- No numpad.
Choose the Royalaxe X68 HE for its aluminum case, compact 65% layout, and listed hot-swap feature, which the CK75 does not list. Choose the Sikakeyb Castle CK75 for its 75% layout, gasket mount, sound dampening, and stated 8000 Hz polling rate, features not listed for the X68 HE. Both restrict switch choice to magnetic switches, and neither includes a numpad.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Royalaxe X68 HE
Sikakeyb Castle CK75
Layout size
65%
75%
Hot-swappable
Yes
No
Switch changes without soldering
Case material
Aluminum
ABS
Sound dampening
No
Yes
Released
2025
2024
- Royalaxe X68 HE
- Sikakeyb Castle CK75
- Performance
- 7288
- Build quality
- 4442
- Productivity
- 4956
- Customizability
- 5746
- Portability
- 7161
- Hall effect (magnetic)
- Rapid trigger
- Connection: Wired
- Switch options: Magnetic
- Keycaps: PBT
What will you mostly use it for?
The CK75 is the more compelling fit for gaming and work that benefits from its listed 8000 Hz polling rate, larger layout, gasket mount, and sound dampening. The X68 HE is the compact pick, and its hot-swap listing gives it an advantage for users interested in changing switches within its magnetic-only limit. Both are wired Hall Effect boards with Rapid Trigger, so those shared features do not decide the comparison. For travel, the X68 HE’s smaller layout is a concrete advantage, though only the CK75 has a listed weight.
Pick the Sikakeyb Castle CK75
- The CK75 lists an 8000 Hz polling rate.
- Both boards have Hall Effect switches and Rapid Trigger, while the CK75 also uses a 75% layout.
Royalaxe X68 HE vs Sikakeyb Castle CK75 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
5 of 19 specs differ
Royalaxe X68 HE
Sikakeyb Castle CK75
Switch options
Hall effect (magnetic)
Rapid trigger
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Display
Connection
Max polling rate
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
Released
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Royalaxe X68 HE vs Sikakeyb Castle CK75: your questions
The CK75 lists an 8000 Hz polling rate, while the X68 HE’s metadata does not list a polling rate. Both keyboards have Hall Effect switches and Rapid Trigger, so the CK75’s listed rate is the clearest gaming distinction.
Yes, both are listed with Rapid Trigger and Hall Effect switches. The Royalaxe vendor description also names adjustable trigger response for the X68 HE.
No. Its compatibility information specifies magnetic switches only, and standard MX switches will not fit.
The CK75 is listed with magnetic switches, but it is not listed as hot-swappable. Standard MX switches will not fit, so do not assume MX switch compatibility.
The Royalaxe X68 HE is a 65% ANSI keyboard, while the Sikakeyb Castle CK75 is a 75% ANSI keyboard. The X68 HE has no function row or numpad, and the CK75’s compatibility details specify that it has no numpad.
The Royalaxe X68 HE has an aluminum case. The Castle CK75 is listed with an ABS case.
Yes, the CK75 is listed with a gasket mount and sound dampening. The X68 HE does not have either feature listed in its specifications.
The Castle CK75 is listed with an 8000 Hz polling rate. The Royalaxe vendor description also mentions 8K polling, but the X68 HE’s product metadata does not list a polling rate.
No, both are listed as wired-only keyboards. Both also list USB-C.
The X68 HE’s 65% layout is smaller in layout size than the CK75’s 75% layout. The CK75 has a listed weight of 805g, while a weight is not listed for the X68 HE.
Yes, both product listings specify PBT keycaps. The Royalaxe vendor description further describes its X68 HE keycaps as five-sided thermal-sublimation PBT.
Neither is listed with a numpad. The X68 HE’s 65% layout rule explicitly says it has no numpad, and the CK75’s compatibility details also specify no numpad.
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