Redragon CASTOR K631 HE vs UCAL K673Gaming Speed vs Wireless Versatility
Choose the CASTOR K631 HE for its 8KHz polling and rapid trigger for gaming, or the UCAL K673 for its tri-mode wireless connectivity and quieter typing.
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Which one should you get?
Get the
Redragon CASTOR K631 HE
Gaming Speed
Build quality in the bottom 5% of 65% boards under $50.
- 8000 Hz polling rate for minimal input latency in games.
- Hall effect magnetic switches with rapid trigger support for adjustable actuation.
- Includes four spare switches and a keycap puller.
- Magnetic switches only. Standard MX switches will not fit.
- 65% layout. No function row and no numpad.
Get the
Redragon UCAL K673
Wireless Versatility
Build quality in the bottom 35% of 75% boards under $100.
- Tri-mode wireless connectivity (Bluetooth, 2.4GHz, and wired).
- Includes a control knob for media and lighting adjustments.
- Gasket mount with sound dampening foam and silicone pad for a quieter typing feel.
- Switches are soldered. Swapping them means soldering.
- No numpad.
Select the Redragon CASTOR K631 HE if your primary goal is achieving the highest possible performance in competitive gaming and you don't mind a wired connection. Opt for the Redragon UCAL K673 if you need a versatile wireless keyboard for office, programming, or content creation, valuing its connectivity options, multimedia knob, and quieter typing experience over ultimate gaming latency.
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.
Redragon CASTOR K631 HE
Redragon UCAL K673
Layout size
65%
75%
Hall effect (magnetic)
Yes
No
Adjustable actuation helps in games and not in normal typing
Rapid trigger
Yes
No
Faster resets help in games and not in normal typing
Connection
Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Max polling rate
8,000 Hz
1,000 Hz
Higher polling helps competitive FPS and does nothing for typing
- Redragon CASTOR K631 HE
- Redragon UCAL K673
- Performance
- 9163
- Build quality
- 4258
- Productivity
- 4863
- Customizability
- 4754
- Portability
- 6573
- Case material: Plastic
What will you mostly use it for?
The CASTOR K631 HE is the definitive choice for competitive gaming due to its high-performance specs. For nearly all other scenarios, including office work, programming, and content creation, the UCAL K673's wireless flexibility, additional features, and quieter build make it more suitable. The CASTOR's advantage in portability is countered by the UCAL's broader utility for daily productivity tasks.
Pick the Redragon CASTOR K631 HE
- Higher 8000 Hz polling rate versus 1000 Hz for lower input latency.
- Hall effect magnetic switches with software-adjustable rapid trigger technology.
- The manufacturer claims an 8x faster response time with 0.125ms latency.
Redragon CASTOR K631 HE vs UCAL K673 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 20 specs differ
Redragon CASTOR K631 HE
Redragon UCAL K673
Switch options
Hall effect (magnetic)
Rapid trigger
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Weight
Dimensions
Backlight
Released
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Redragon CASTOR K631 HE vs UCAL K673: your questions
The Redragon CASTOR K631 HE is better for competitive FPS gaming. It features an 8000 Hz polling rate and hall effect magnetic switches with rapid trigger technology, which the manufacturer states allows for adjustable actuation points and an 8x faster response for precise movements and shots.
Yes, the Redragon UCAL K673 offers tri-mode connectivity. It can connect via Bluetooth, a 2.4GHz wireless dongle, or a USB-C cable. This allows for flexible switching between different computers, tablets, or other compatible devices.
The product listing does not state that the CASTOR K631 HE has hot-swappable sockets. It is listed as a pre-built keyboard and includes a switch puller and four spare switches, but the method of replacement is not specified.
The Redragon UCAL K673 is designed to be quieter. Its product description highlights sound dampening with a 3.5mm PO foam layer and a thick silicone pad under the PCB to minimize noise and resonance, making it more suitable for shared office spaces.
The main advantages, according to Redragon, are the elimination of physical input delay and a longer switch lifespan. More importantly, they enable rapid trigger technology, allowing the actuation point to be software-adjusted for ultra-precise control in games.
The specific model described in the vendor information is a UCAL K673 DE, which features a QWERTZ layout intended for users in Germany, Austria, and Switzerland. Buyers should confirm the layout version before purchasing.
The Redragon CASTOR K631 HE is more portable. It weighs 638g compared to the UCAL K673's 1240g, has a smaller 65% footprint, and its packaging includes a portable strap for easier carrying.
The CASTOR K631 HE includes the keyboard, a keycap and switch puller, a USB-C cable, a portable strap, four spare switches, a sticker, and a manual. The UCAL K673 includes the keyboard, a removable USB-C cable, a keycap and switch puller, spare switches, and a user manual.
Yes, the UCAL K673 features a dedicated control knob. This knob allows you to adjust background lighting brightness, volume, and playback controls directly on the keyboard without needing to use software.
The Redragon UCAL K673 uses linear Red switches. The vendor's comparison chart indicates these are quiet switches with a 40g operation force, suitable for both office and gaming use.
A higher polling rate can reduce input latency, which may be perceptible in fast-paced competitive gaming where every millisecond counts. For general office work, typing, or casual gaming, the 1000Hz rate of the UCAL K673 is typically sufficient and standard for many wireless keyboards.
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