Compare
Pick two boards from the directory and see how they differ.
Shaded rows are where they differ.
| Spec |  Keychron Keychron K3 Ultra 8K $110 “K3 Ultra 8K, from Keychron's store” |  NuPhy NuPhy Air75 V2 $120–$130 “Low-profile done right” |
|---|---|---|
| Price , different | $110 | $120–$130 |
| Size | 75% | 75% |
| Type | Pre-built | Pre-built |
| Connectivity | Wireless + Wired | Wireless + Wired |
| Released , different | 2026 | 2023 |
| Mounting , different | Tray Mount | Top Mount |
| Case , different | Aluminum + Wood | Aluminum Top / ABS Bottom |
| Colors , different | Black, White, Black(ISO-German), Black(ISO-UK), Black(ISO-Nordic) | Basalt Black, Ionic White, Lunar Gray |
| Weight , different | 566 g +/- 10 g | 598g |
| Dimensions , different | 320.62 x 126 mm | 316.4 x 132.5 x 13.5mm |
| Typing angle , different | Not listed | 3.5° / 6.5° / 8.5° (adjustable feet) |
| Front height , different | Not listed | 13.5mm |
| Switches | Low Profile | Low Profile |
| Profile | Low Profile | Low Profile |
| Keycaps , different | LSA double-shot PBT keycaps, non-shine-through | Double-shot PBT, Low Profile |
| PCB , different | Hot-swap | Hot-swap, Low Profile |
| Plates , different | Aluminum | Integrated |
| Battery , different | 2600 mAh, up to 550 hours | 4000mAh (up to 220h, RGB off) |
| Compatible switches , different | Keychron low-profile | Gateron Low Profile (KS-33) |
| Software , different | ZMK, Keychron Launcher | QMK, VIA |
| NKRO | Yes | Yes |
| RGB | Yes | Yes |
| Features , different | 75% layout, Tri-mode, Hot-swap, ZMK, Low profile | Low Profile, Hot-swap, QMK/VIA, Bluetooth + 2.4GHz, Double-shot PBT Keycaps, Mac Optimized, RGB Backlighting, Gateron Low Profile (KS-33), USB-C |
| Good for , different | Players and typists who want the best slim 75% on paper People who dislike charging often Travelers who want a premium low-profile board | Mac users and laptop switchers who want a thin mechanical board People who work across several devices Portable setups (598 g) Anyone who wants QMK/VIA in a low-profile board |
| Skip if , different | QMK/VIA users who want to keep that firmware Buyers who need a standard-height board Anyone who wants to remap through desktop software only | People who want full-height MX-style switch feel Buyers who want to use Kailh Choc switches Anyone who needs backlit legends without swapping keycaps Buyers looking for the cheapest wireless option |
| Pros , different | 8000 Hz polling and 2.4 GHz wireless (maker, Tom's Hardware) Battery rated up to 550 hours; Tom's Hardware found battery life exceptional Well-damped, tray-mounted with real wood accents (Tom's Hardware) Excellent Keychron-made switches, per Tom's Hardware Two-level flip-up feet and PBT keycaps | Low-profile switches with about 75 to 80 percent of the travel of full-height switches, per Tom's Hardware 2.4GHz at 1000Hz polling, which Tom's Hardware could not tell apart from wired in a shooter Up to 220 hours of battery with lights off per NuPhy, and 35 to 57 hours with all lights on Double-shot PBT keycaps and pre-lubed switches, both praised by Tom's Hardware QMK/VIA remapping with eight layers (Tom's Hardware) Mac/Windows switch with alternate keycaps, and AirFeet that let it sit on top of a laptop Four spare switches and seven spare keycaps in the box (NuPhy) |
| Cons , different | Runs ZMK rather than QMK/VIA Software is online-only (Tom's Hardware) Rosewood finish is not the best (Tom's Hardware) Keycaps are good but not perfect (Tom's Hardware) Review listed an early crowdfunded unit; shipping versions may differ | Only Gateron low-profile (KS-33) switches fit; Kailh Choc switches do not The flat keycap profile takes an hour or two to adjust to, and a palm rest is not included Bluetooth polling is 125Hz; use 2.4GHz or USB-C for low latency VIA limits macros and static lighting scenes (Tom's Hardware) The stock keycaps are not backlit, so most of the light comes from the side bars Creative Bloq found the 75% layout a little cramped coming from full-size, and not the cheapest |
| Research take , different | The standout slim 75%, according to Tom's Hardware. The firmware switch is the main catch. | A thin, light, well-reviewed low-profile 75% that suits portability and multi-device work. Tom's Hardware gave it an Editor's Choice award as one of the best low-profile mechanical keyboards, and Creative Bloq called it a high-quality, attractive choice. The compromises are a flat keycap profile, Gateron-only low-profile switch compatibility and a price above basic rivals. If you want full-height switches, look elsewhere. |