Compare Redragon K628 Pollux vs PENUMBRA K687 Differences Side by Side

This comparison is for buyers deciding between two Redragon 75% wired keyboards at different price points. The K628 Pollux is a value-focused plastic board, while the K687 Penumbra is a more expensive aluminum model with advanced features. The decision hinges on whether you prioritize a lower cost and lighter weight or are willing to pay more for a sturdier build, gasket mount, and extensive sound dampening.

Model
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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
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Main differences	Released in 2023 Uses a Bottom Mount mounting style Weighs about 470 g Made with a Plastic case Features ABS keycaps	Released in 2025 Comes with a knob Has built-in sound dampening Uses a Gasket Mount mounting style Weighs about 1500 g Sized at 43 x 133 x 43 mm Made with a Aluminum case
Score	Scores Performance: 77.9 Build Quality: 55.4 Productivity: 59.1 Customizability: 57.3 Portability: 60	Scores Performance: 79.5 Build Quality: 73 Productivity: 71.2 Customizability: 62 Portability: 60.1
Name	Name Redragon K628 Pollux	Name Redragon PENUMBRA K687
Release year	Release year 2023	Release year 2025
Switch Options	Switch Options Linear	Switch Options Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Wired, Wired only	Connection Wired, Wired only
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity -
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Bottom Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic	Case Material Aluminum
Keycaps Material	Keycaps Material ABS	Keycaps Material -
Dimensions	Dimensions -	Dimensions 43 x 133 x 43 mm
Weight	Weight 470g	Weight 1500g

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Pros and Trade-offs

Your budget and desire for a premium typing experience are the deciding factors. The Redragon K628 Pollux is the clear choice for cost-conscious buyers or those who need a lightweight keyboard. If you value a sturdy aluminum build, a quieter and more refined typing feel with gasket mounting, and the utility of a control knob, the Redragon Penumbra K687 justifies its higher cost.

Redragon K628 Pollux

+Significantly lighter weight at 470 grams for easy portability.
+Lower cost, making it a strong budget entry point.
+Includes an extra set of keycaps for basic customization.
+Hot-swappable sockets compatible with a wide range of switches.
+Unique 78-key layout incorporates a numpad in a compact form factor.

−Plastic case construction feels less premium.
−Uses basic Outemu Red switches without pre-lubrication.
−Bottom mount design is less flexible than a gasket mount.
−Lacks a control knob and extensive pre-installed sound dampening.

Redragon PENUMBRA K687

+CNC aluminum case provides a solid, premium feel and stability.
+Gasket mount design with silicone gaskets for a softer, more consistent typing feel.
+Extensive 5-layer noise dampening including PO foam, IXPE foam, and a PET sound pad.
+Dedicated control knob for media and backlight adjustment.
+Comes with four spare switches and uses custom Dragon Chant linear switches.

−Much heavier at 1500 grams, making it less portable.
−Higher price point.
−81-key layout lacks the integrated numpad found on the K628.
−Vendor description lists it as wired only, with no wireless option mentioned.

Which Keyboard Is Better for Your Needs?

The K687 Penumbra is the more versatile choice, winning in office, programming, modding, and content creation due to its knob, quiet typing, and premium build. The K628 Pollux wins only for travel, thanks to its much lighter weight. For gaming, the core features are similar, making it a tie that comes down to budget versus build preference.

GamingTie

•Both offer N-key rollover and wired connectivity for reliable input.
•Both feature hot-swappable linear switches suitable for gaming.
•The K687's heavier aluminum build may feel more stable during intense sessions.

OfficeRedragon PENUMBRA K687

•The K687's dedicated control knob provides quick access to volume and media controls.
•Its 5-layer noise dampening, including PO foam and silicone pads, makes it quieter for shared spaces.
•The aluminum case offers a more premium, professional appearance.

ProgrammingRedragon PENUMBRA K687

•The K687's 81-key layout includes a dedicated function row without requiring FN combos.
•The included knob can be programmed for productivity shortcuts via software.
•The gasket mount design may offer a more comfortable typing experience for long sessions.

TravelRedragon K628 Pollux

•The K628 Pollux weighs only 470g, significantly lighter than the K687's 1500g.
•Its plastic case is less susceptible to cosmetic damage during transport.
•The vendor description notes it comes with a detachable USB cable for easier packing.

ModdingRedragon PENUMBRA K687

•The K687's gasket mount design is more mod-friendly for tuning typing feel.
•It comes pre-equipped with 5 layers of sound-dampening foam (PO foam, IXPE, PET, socket foam, silicone pad).
•It includes four spare switches in the box for experimentation.

Content CreationRedragon PENUMBRA K687

•The dedicated knob offers precise control over media playback and volume during editing.
•Software support for macros can streamline repetitive editing tasks.
•The premium aluminum build and sound profile are better suited for a streaming or recording setup.