KeebFinder
Not sure which keyboard to choose? Try the Keyboard Finder now!

Compare Keychron K3 Ultra vs K3 V2 Differences Side by Side

This comparison is for buyers deciding between two low-profile 75% wireless keyboards from Keychron that share a slim form factor but target different priorities. The K3 Ultra introduces a premium wood-and-metal frame, an 8K polling rate in wireless mode, and double-shot PBT keycaps, while the K3 V2 offers a more established design with optical hot-swappable switches and a lower price. The decision is hard because both keyboards are compact, wireless, and hot-swappable, yet they diverge sharply in performance targets and build materials.

78
Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard
68
Keychron K3 Ultra-slim Wireless Mechanical Keyboard (Version 2)

Select a keyboard to compare

0.0 (0)
3.5 (9415)
  • Released in 2026
  • Built with the ANSI, ISO layout standard
  • Supports QMK firmware
  • Supports VIA configuration
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 8000 Hz polling rate
  • Features PBT keycaps
  • Offers Yes, Rgb RGB lighting
  • Released in 2020
  • Built with the ANSI, JIS, ISO, ISO-Nordic, ISO-UK, ISO-DE, ISO-ES layout standard
  • Provides dedicated media keys
  • Connects via USB-C
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 1550 mAh battery
  • Made with a Aluminum, Plastic case
  • Features ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 86.6
  • Build Quality: 69.2
  • Productivity: 70
  • Customizability: 86.5
  • Portability: 74.6
Scores
  • Performance: 61
  • Build Quality: 66.6
  • Productivity: 65.7
  • Customizability: 67.3
  • Portability: 77.5
Name
Keychron K3 Ultra
Name
Keychron K3 V2
Release year
2026
Release year
2020
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI, ISO
Layout Standard
ANSI, JIS, ISO, ISO-Nordic, ISO-UK, ISO-DE, ISO-ES
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
1550 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
-
Case Material
Aluminum, Plastic
Keycaps Material
PBT
Keycaps Material
ABS
Dimensions
-
Dimensions
-
Weight
-
Weight
-
*Something incorrect or missing? Please
let me know
!

Pros and Trade-offs

For gamers, programmers, and anyone who values low latency and extensive customization, the Keychron K3 Ultra is the clear choice with its 8K polling and ZMK firmware. If your priority is a proven, affordable low-profile keyboard with optical hot-swappable switches and you do not need cutting-edge wireless performance, the K3 V2 remains a solid value. Both keyboards are well-suited for travel, but the K3 Ultra offers a more future-proof feature set.

Keychron K3 Ultra

  • +8K polling in wireless and wired modes for top-tier gaming responsiveness
  • +Double-shot PBT keycaps resist shine and fading over time
  • +ZMK firmware with Launcher web app for deep remapping and macros
  • +Wood and metal frame offers a unique premium aesthetic
  • +Multiple foam layers (IXPE, EPDM, bottom case) for quiet typing
  • −No dedicated palm rest or travel pouch included in the box
  • −Optical switch compatibility is not specified; the vendor states Keychron Milk POM switches only
  • −Heavier at 566 g compared to the K3 V2

Keychron K3 V2

  • +Proven low-profile optical switch design with MX-styled stems
  • +Available in many layout standards including JIS and multiple ISO variants
  • +Includes extra keycaps and a dust cover in the package
  • +Lower price point than the K3 Ultra
  • −ABS keycaps are more prone to shine over time compared to PBT
  • −Limited to 1000 Hz polling, no 2.4 GHz connectivity
  • −Battery life up to 34 hours is significantly shorter than the K3 Ultra
  • −Optical switches are not compatible with conventional MX mechanical switches

Which Keyboard Is Better for Your Needs?

The K3 Ultra wins in five of six categories thanks to its superior 8K polling, premium PBT keycaps, and extensive foam dampening. For gaming, its 2.4 GHz and 8K polling provide a clear latency advantage. Office and content creation users benefit from longer battery life and quieter keystrokes. Programmers and modders gain from ZMK firmware and multiple foam layers. Travel is a tie because both are similarly slim and portable, though the K3 V2 has a dedicated travel pouch.

GamingKeychron K3 Ultra
  • •8K polling rate in 2.4 GHz and wired modes for lower latency
  • •Includes 2.4 GHz connectivity for ultra-low-latency wireless gaming
  • •Powerful ARM MCU with 1 MB flash provides more flexibility for performance
OfficeKeychron K3 Ultra
  • •PBT keycaps offer better oil resistance for long-term use
  • •Up to 550 hours battery life with backlight off reduces charging frequency
  • •Quieter typing with IXPE acoustic foam and EPDM foam layers
ProgrammingKeychron K3 Ultra
  • •ZMK firmware and Launcher web app for full key remapping and macros
  • •LSA double-shot PBT keycaps provide a premium, durable typing surface
  • •8000 Hz polling ensures minimal input lag during rapid key sequences
TravelTie
  • •Both have a slim 75% low-profile design that is easy to pack
  • •K3 Ultra offers 2.4 GHz and Bluetooth 5.2 for flexible connectivity on the go
  • •K3 V2 includes a travel pouch as an available add-on accessory
ModdingKeychron K3 Ultra
  • •Hot-swappable with MX-styled stems for compatibility with many low-profile switches
  • •Multiple internal foam layers (IXPE, EPDM, bottom case) for sound tuning
  • •ZMK firmware enables deep customization via an open-source platform
  • •Separate plate and polymer frame components allow for easy disassembly
Content CreationKeychron K3 Ultra
  • •Per-key RGB and Mix RGB zones allow custom lighting for creative setups
  • •ZMK firmware supports complex macros and shortcuts for editing workflows
  • •PBT keycaps resist wear from heavy daily use better than ABS

Frequently Asked Questions (FAQ)

Discover similar products

You might also like similar products in that price range:

83
$94
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
Keychron K3 V3
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Top Mount

87
$83
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection
Keychron K3 Pro
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

94
$84
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K3 Max
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Plate Mount

65
$95
Keychron K7 Ultra-slim Wireless Mechanical Keyboard
Keychron K7
65%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Alu case,
Tray Mount

83
$104
Keychron K3 Max SE QMK Wireless Custom Mechanical Keyboard
Keychron K3 Max SE
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK

85
$106
Keychron K1 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K1 Max
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
PCB Mount

65
$75
Keychron K3 Ultra-slim Wireless Mechanical Keyboard FR-ISO Layout
Keychron K3
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Alu case,
Plate Mount

84
$94
Keychron K1 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 6
Keychron K1 V6
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Top Mount

84
$109
Keychron K13 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K13 Max
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
PCB Mount

84
$83
Keychron K7 Pro QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K7 Pro
65%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount