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Cooler Master SK631 TKL Wireless Review | 64 Data compared

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  • Avg. price in UK: ~£140
  • Avg. price in US: ~$160
  • Layout size: TKL
  • Connection type: USB / Bluetooth
  • Switch type: mechanical
  • Polling rate: 1000 Hz

Cooler Master SK631 TKL Wireless review. Compare 64 technical specifications and user reviews to see how it ranks among keyboards and if it is worth buying.

6.6

Overall score

What it is: An overall evaluation of the keyboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best keyboards on the market.

Score components:

80.0%

6.6

Technical Score

20.0%

?

User score

Good
6.6

Technical Score

What it is: An assessment of the keyboard's technical performance, covering key areas such as switch feel, typing and gaming performance, layout and features, connectivity, build quality, backlighting, software, and comfort.

When it matters: When you want to compare keyboards based on technical performance and available features.

Score components:

34.0%

7.4

Connectivity & Power

28.0%

5.0

Switches

20.0%

7.0

Materials

12.0%

7.1

Features

6.0%

7.8

Design

Good
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the keyboard.

When it matters: When you want to understand how a keyboard performs in daily use or gaming and how reliable it is in terms of typing feel, noise level, comfort, and long-term durability.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 3.5
    Gaming

    Score components:

    28.0%

    1.0

    Polling rate

    24.0%

    1.0

    Rapid trigger

    20.0%

    1.0

    Adjustable actuation

    16.0%

    10

    Hot-swappable switches

    12.0%

    10

    Onboard memory

  • 7.4
    Typing

    Score components:

    28.0%

    4.0

    Wrist rest included

    24.0%

    10

    Legend method

    20.0%

    10

    Adjustable feet

    15.0%

    9.0

    Typing angle

    13.0%

    4.0

    Pre-lubed stabilizers

  • 4.6
    Programming

    Score components:

    30.0%

    1.0

    QMK support

    26.0%

    1.0

    VIA support

    18.0%

    10

    Mac compatibility

    14.0%

    10

    Multi-device pairing

    12.0%

    7.0

    Connection type

  • No image
No image

Best prices in UK

    N/A~ £140

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Cooler Master SK631 is a slim, low-profile tenkeyless (TKL) mechanical keyboard featuring Cherry MX Low Profile RGB Red switches with a 1.2mm actuation distance and 45g actuation force. It offers versatile hybrid connectivity via Bluetooth 4.0 or wired USB-C and is built with a premium brushed aluminum top plate and flat, chiclet-style keycaps for a minimalist aesthetic. Main pros include its highly portable, lightweight design, customizable per-key RGB lighting, and on-the-fly macro controls that don't require external software. However, notable cons include its lack of adjustable height feet, flat keycaps that can lead to frequent typing errors, and a relatively short battery life of approximately 15 hours with full RGB lighting enabled.

Technical Specifications of Cooler Master SK631 TKL Wireless

Technical Score

What it is: An assessment of the keyboard's technical performance, covering key areas such as switch feel, typing and gaming performance, layout and features, connectivity, build quality, backlighting, software, and comfort.

When it matters: When you want to compare keyboards based on technical performance and available features.

Score components:

34.0%

?

Connectivity & Power

28.0%

?

Switches

20.0%

?

Materials

12.0%

?

Features

6.0%

?

Design

6.6
Cooler Master SK631 TKL Wireless has a technical score of 6.63 points, which is lower than that of 55.2% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the keyboard.

When it matters: When you want to understand how a keyboard performs in daily use or gaming and how reliable it is in terms of typing feel, noise level, comfort, and long-term durability.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the keyboard.
When it matters: When you prefer a keyboard that has already been chosen and reviewed by many other users.
1.0
Cooler Master SK631 TKL Wireless has a popularity of 1 points, which is lower than 79.8% of products in this category.
Ratio quality/price

What it is: An indicator that combines the keyboard's overall rating with its cost.

When it matters: When you are looking for a keyboard that offers a strong balance of performance, features, and price.

Score components:

60.0%

6.6

Overall score

40.0%

9.8

Price

7.6
Cooler Master SK631 TKL Wireless has a quality-to-price ratio of 7.6 points, which is lower than 58.5% of products in this category.
Switch type
What it is: Identifies the switch technology used by the keyboard, such as mechanical, optical, or Hall effect.
When it matters: When you are choosing between different response technologies and their long-term behavior.

Importance: HIGH

mechanical
Switch feel
What it is: Describes the keypress character, such as linear, tactile, or clicky.
When it matters: When the sensation of each keypress changes comfort, control, and noise level for your use.

Importance: HIGH

linear / tactile / clicky
Switch name
What it is: States the specific switch model used by the keyboard.
When it matters: When the exact switch model matters because small tuning differences affect your preference.

Importance: MEDIUM

?
Actuation force
What it is: Measures how much force is needed to actuate a key.
When it matters: When finger fatigue, accidental presses, or key resistance matters to your typing style.

Importance: HIGH

45 g
Min actuation distance
What it is: Measures the shortest key travel needed to register an input.
When it matters: When faster key response matters and you want the shortest possible trigger point under your fingers.

Importance: MEDIUM

1.2 mm
Cooler Master SK631 TKL Wireless has a minimum actuation distance of 1.2 mm, which is shorter than 59.9% of keyboards and equal to 15.6% of keyboards.
Show more
Keyboard type
What it is: Identifies the keyboard technology, such as mechanical, membrane, optical, or Hall effect.
When it matters: When you need a keyboard built around a specific switch technology or feel profile.

Importance: HIGH

mechanical
Layout size
What it is: States the keyboard form factor and how much of the standard keyset it includes.
When it matters: When desk space, portability, or access to a full key set affects how you work or play.

Importance: HIGH

TKL
Layout standard
What it is: Specifies the regional layout standard, such as ANSI, ISO, or JIS.
When it matters: When you need a regional key layout that matches your language habits or keycap set.

Importance: MEDIUM

ANSI
N. of keys
What it is: States how many keys are present on the keyboard.
When it matters: When you need a certain number of keys for shortcuts, navigation, or a numpad.

Importance: MEDIUM

87
Cooler Master SK631 TKL Wireless has 87 keys, which is more than 44.5% of keyboards and equal to 17.6% of keyboards.
Profile
What it is: Describes whether the keyboard uses a low-profile or standard-height design.
When it matters: When key height changes your typing comfort, travel distance, or the overall desk setup.

Importance: MEDIUM

low-profile
Show more
Connection type
What it is: Specifies how the keyboard connects, such as USB, 2.4 GHz wireless, or Bluetooth.
When it matters: When latency, cable management, or wireless flexibility is part of your buying decision.

Importance: HIGH

USB / Bluetooth
Cooler Master SK631 TKL Wireless offers USB / Bluetooth connectivity, which is more versatile than 43.5% of keyboards and equal to 14% of keyboards.
Multi-device pairing
What it is: Shows whether the keyboard can stay paired with multiple devices for quicker switching.
When it matters: When you switch regularly between a laptop, tablet, and other devices on one desk.

Importance: HIGH

yes
Cooler Master SK631 TKL Wireless supports multi-device pairing. 4.5% of keyboards support multi-device pairing.
up to 3 devices.
Bluetooth version
What it is: States the Bluetooth generation supported for wireless pairing.
When it matters: When wireless stability, compatibility, and energy efficiency are part of what you compare.

Importance: MEDIUM

4.0
Cooler Master SK631 TKL Wireless uses Bluetooth 4.0, which is older than 54.1% of keyboards and equal to 1.7% of keyboards.
Mac compatibility
What it is: Shows whether the keyboard is intended to work properly with macOS layouts, shortcuts, or legends.
When it matters: When you need the keyboard to work properly with macOS shortcuts and key mapping.

Importance: HIGH

yes
Cooler Master SK631 TKL Wireless is Mac compatible. 44.4% of keyboards are Mac compatible.
Battery life
What it is: Estimates how long the keyboard can run on a full charge.
When it matters: When the keyboard needs to last through workweeks, travel, or long gaming stretches without constant charging.

Importance: HIGH

15 h
Cooler Master SK631 TKL Wireless lasts 15 h on a charge, which is shorter than 98.3% of keyboards and equal to 1.7% of keyboards.
RGB on.
Show more
RGB lighting
What it is: Shows whether the keyboard includes customizable RGB lighting effects.
When it matters: When visual customization and desk aesthetics matter to your setup.

Importance: HIGH

yes
Cooler Master SK631 TKL Wireless has RGB lighting. 12.3% of keyboards have RGB lighting.
Per-key RGB
What it is: Shows whether each key can be lit and controlled independently instead of sharing one uniform lighting zone.
When it matters: When customizing each key individually matters for visuals, games, or shortcut visibility.

Importance: HIGH

yes
Cooler Master SK631 TKL Wireless has per-key RGB lighting. 23% of keyboards have per-key RGB lighting.
RGB zones
What it is: States how many RGB lighting zones can be controlled separately.
When it matters: When you want more lighting control than a simple all-at-once backlight can provide.

Importance: LOW

87
Cooler Master SK631 TKL Wireless has 87 RGB zones, which is more than 58.6% of keyboards and equal to 11.8% of keyboards.
Underglow / side lighting
What it is: Shows whether the case includes lighting around the underside or outer edges in addition to the keys themselves.
When it matters: When edge lighting is part of the visual style you want from the keyboard.

Importance: MEDIUM

yes
Cooler Master SK631 TKL Wireless includes underglow lighting. 68.6% of keyboards include underglow lighting.
Backlight direction
What it is: Specifies whether the switches use north-facing or south-facing backlighting.
When it matters: When you care about switch compatibility, keycap interference, or lighting placement.

Importance: LOW

north-facing
Show more
Case material
What it is: Describes the main material used for the keyboard case.
When it matters: When build feel, rigidity, and overall finish influence your sense of quality.

Importance: HIGH

aluminum
Plate material
What it is: Describes the material used for the mounting plate beneath the switches.
When it matters: When keyboard stiffness, sound profile, and bottom-out feel matter more than the switch spec sheet alone.

Importance: HIGH

aluminum
Keycap material
What it is: Describes the material used to make the keycaps.
When it matters: When surface texture, wear resistance, and sound of the keycaps affect your choice.

Importance: HIGH

ABS
Keycap profile
What it is: Describes the shape and height profile of the keycaps.
When it matters: When key shape and sculpting affect comfort, wrist angle, and the sound of each press.

Importance: MEDIUM

low-profile
Legend method
What it is: Describes how the legends are applied to the keycaps, which affects durability and visibility.
When it matters: When you care about how long key legends stay readable after heavy use.

Importance: MEDIUM

double-shot
Cooler Master SK631 TKL Wireless uses double-shot legends, which are more durable than 25.8% of keyboards and equal to 74.2% of keyboards.
Secondary legends are pad-printed.
Show more

Cooler Master SK631 TKL Wireless vs the average keyboard

  • 0.8 mm shorter key travel
    Cooler Master SK631 TKL Wireless has 3.2 mm of total travel, while the average keyboard has 4 mm.
    What it is: Measures the full distance a key can move from top to bottom.
    When it matters: When full key movement changes comfort, speed, or the way the keyboard feels under your fingers.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless has 3.2 mm of total travel, while the average keyboard has 4 mm.3.2 mm vs 4 mm
  • Underglow lighting
    Cooler Master SK631 TKL Wireless includes underglow lighting, the average keyboard does not. 31.6% of keyboards include underglow lighting.
    What it is: Shows whether the case includes lighting around the underside or outer edges in addition to the keys themselves.
    When it matters: When edge lighting is part of the visual style you want from the keyboard.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless includes underglow lighting, the average keyboard does not. 31.6% of keyboards include underglow lighting.
  • 0.5 mm shorter actuation distance
    Cooler Master SK631 TKL Wireless has a shorter minimum actuation distance than the average keyboard (1.2 mm vs 1.7 mm). The average keyboard has a minimum actuation distance of 1.7 mm.
    What it is: Measures the shortest key travel needed to register an input.
    When it matters: When faster key response matters and you want the shortest possible trigger point under your fingers.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless has a shorter minimum actuation distance than the average keyboard (1.2 mm vs 1.7 mm). The average keyboard has a minimum actuation distance of 1.7 mm.1.2 mm vs 1.7 mm
  • 37.6% lower weight
    Cooler Master SK631 TKL Wireless weighs less than the average keyboard (609 g vs 976 g). The average keyboard weighs 976 g.
    What it is: Measures the total mass of the keyboard.
    When it matters: When you care whether the keyboard feels easy to carry or heavy enough to stay planted on the desk.

    Importance: HIGH

    Cooler Master SK631 TKL Wireless weighs less than the average keyboard (609 g vs 976 g). The average keyboard weighs 976 g.609 g vs 976 g
  • 8.7 mm lower keyboard height
    Cooler Master SK631 TKL Wireless is lower than the average keyboard (29.8 mm vs 38.5 mm). The average keyboard height is 38.5 mm.
    What it is: Measures the keyboard's vertical dimension from its base to its highest point.
    When it matters: When the keyboard has to fit under shelves, trays, or other tight desk constraints.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless is lower than the average keyboard (29.8 mm vs 38.5 mm). The average keyboard height is 38.5 mm.29.8 mm vs 38.5 mm
  • 8.2 mm thinner design
    Cooler Master SK631 TKL Wireless is thinner than the average keyboard (29.8 mm vs 38 mm). The average keyboard thickness is 38 mm.
    What it is: Measures the keyboard's front-to-back depth or body thickness.
    When it matters: When front height and overall keyboard bulk affect comfort or portability.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless is thinner than the average keyboard (29.8 mm vs 38 mm). The average keyboard thickness is 38 mm.29.8 mm vs 38 mm
  • 37.6% lower weight
    Cooler Master SK631 TKL Wireless weighs less than the average keyboard (609 g vs 976 g). The average keyboard weighs 976 g.
  • 8.7 mm lower keyboard height
    Cooler Master SK631 TKL Wireless is lower than the average keyboard (29.8 mm vs 38.5 mm). The average keyboard height is 38.5 mm.
  • 8.2 mm thinner design
    Cooler Master SK631 TKL Wireless is thinner than the average keyboard (29.8 mm vs 38 mm). The average keyboard thickness is 38 mm.
  • 0.8 mm shorter key travel
    Cooler Master SK631 TKL Wireless has 3.2 mm of total travel, while the average keyboard has 4 mm.
  • 0.5 mm shorter actuation distance
    Cooler Master SK631 TKL Wireless has a shorter minimum actuation distance than the average keyboard (1.2 mm vs 1.7 mm). The average keyboard has a minimum actuation distance of 1.7 mm.
  • Underglow lighting
    Cooler Master SK631 TKL Wireless includes underglow lighting, the average keyboard does not. 31.6% of keyboards include underglow lighting.

Total
Design
Switches
Features
  • 4 older release date
    Cooler Master SK631 TKL Wireless is older than the average keyboard (2,019 vs 2,023). The average keyboard was released in 2,023.
    June 2019
  • Less versatile connectivity
    Cooler Master SK631 TKL Wireless offers less versatile connectivity than the average keyboard (USB / Bluetooth vs USB / 2.4GHz / Bluetooth). The average keyboard offers USB / 2.4GHz / Bluetooth connectivity.
  • 151 h shorter battery life
    Cooler Master SK631 TKL Wireless lasts less long on a charge than the average keyboard (15 h vs 166 h). The average keyboard lasts 166 h on a charge.
    RGB on.
  • Older Bluetooth version
    Cooler Master SK631 TKL Wireless uses an older Bluetooth version than the average keyboard (4 vs 5.2). The average keyboard uses Bluetooth 5.2.
  • No pre-lubed stabilizers
    Cooler Master SK631 TKL Wireless does not have pre-lubed stabilizers, the average keyboard does. 81.1% of keyboards come with pre-lubed stabilizers.
  • Less versatile connectivity
    Cooler Master SK631 TKL Wireless offers less versatile connectivity than the average keyboard (USB / Bluetooth vs USB / 2.4GHz / Bluetooth). The average keyboard offers USB / 2.4GHz / Bluetooth connectivity.
    What it is: Specifies how the keyboard connects, such as USB, 2.4 GHz wireless, or Bluetooth.
    When it matters: When latency, cable management, or wireless flexibility is part of your buying decision.

    Importance: HIGH

    Cooler Master SK631 TKL Wireless offers less versatile connectivity than the average keyboard (USB / Bluetooth vs USB / 2.4GHz / Bluetooth). The average keyboard offers USB / 2.4GHz / Bluetooth connectivity.USB / Bluetooth vs USB / 2.4GHz / Bluetooth
  • 151 h shorter battery life
    Cooler Master SK631 TKL Wireless lasts less long on a charge than the average keyboard (15 h vs 166 h). The average keyboard lasts 166 h on a charge.
    RGB on.
    What it is: Estimates how long the keyboard can run on a full charge.
    When it matters: When the keyboard needs to last through workweeks, travel, or long gaming stretches without constant charging.

    Importance: HIGH

    Cooler Master SK631 TKL Wireless lasts less long on a charge than the average keyboard (15 h vs 166 h). The average keyboard lasts 166 h on a charge.15 h vs 166 h
  • No pre-lubed stabilizers
    Cooler Master SK631 TKL Wireless does not have pre-lubed stabilizers, the average keyboard does. 81.1% of keyboards come with pre-lubed stabilizers.
    What it is: Shows whether the stabilizers arrive factory-lubricated instead of requiring manual tuning for smoother larger keys.
    When it matters: When larger keys like space, enter, and shift need to feel smoother and sound less rattly out of the box.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless does not have pre-lubed stabilizers, the average keyboard does. 81.1% of keyboards come with pre-lubed stabilizers.
  • Older Bluetooth version
    Cooler Master SK631 TKL Wireless uses an older Bluetooth version than the average keyboard (4 vs 5.2). The average keyboard uses Bluetooth 5.2.
    What it is: States the Bluetooth generation supported for wireless pairing.
    When it matters: When wireless stability, compatibility, and energy efficiency are part of what you compare.

    Importance: MEDIUM

    Cooler Master SK631 TKL Wireless uses an older Bluetooth version than the average keyboard (4 vs 5.2). The average keyboard uses Bluetooth 5.2.4.0 vs 5.2
  • 5.77x less popular
    Cooler Master SK631 TKL Wireless is less popular than the average keyboard (1.00 vs 5.772).
    What it is: An indicator based on the number of reviews received by the keyboard.
    When it matters: When you prefer a keyboard that has already been chosen and reviewed by many other users.
    Cooler Master SK631 TKL Wireless is less popular than the average keyboard (1.00 vs 5.772).1 vs 5.77
  • 4 older release date
    Cooler Master SK631 TKL Wireless is older than the average keyboard (2,019 vs 2,023). The average keyboard was released in 2,023.
    June 2019
    What it is: States when the keyboard was officially launched or became available.
    When it matters: When you prefer a newer board for more recent wireless standards, firmware support, or hardware revisions.

    Importance: LOW

    Cooler Master SK631 TKL Wireless is older than the average keyboard (2,019 vs 2,023). The average keyboard was released in 2,023.2019 vs 2023
Total
Overall
Design
Connectivity & Power
Materials

Graphic comparison of Cooler Master SK631 TKL Wireless and

Attribute category
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Third-party reviews

What customers like about Cooler Master SK631 TKL Wireless?

  • Sleek and industrial minimalist design with a brushed aluminum top plate
  • Low-profile Cherry MX mechanical switches offer a shorter actuation distance for responsive gaming
  • Vibrant per-key RGB lighting with multiple preset modes and an accent LED strip
  • Versatile connectivity options including Bluetooth and USB-C wired mode
  • On-the-fly controls allow for macro recording and lighting adjustments without software
  • Highly portable TKL (Tenkeyless) form factor that is easy to carry for on-the-go use

What customers dislike about Cooler Master SK631 TKL Wireless?

  • Flat, square keycaps with minimal spacing often lead to frequent typos and accidental key presses
  • Marketed as low-profile but feels noticeably taller than true low-profile competitors due to the switch and PCB design
  • ABS keycaps are prone to showing finger oils and shine over time
  • Typing experience can feel 'mushy' or stiff compared to standard mechanical keyboards
  • Lack of adjustable feet or incline options limits ergonomic customization
  • Proprietary stabilizer designs make it difficult to swap to third-party keycaps

Video reviews

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