Which one should you get?
Get the
Coolkiller CK98
- Offers linear, tactile, and silent switch options for varied preferences.
- Includes a premium aluminum ammunition case for storage and transport.
- Features a three-layer sound dampening system with Poron foam and silicone pads.
- Heavier overall weight and package weight compared to the ER95.
- Smaller 3750mAh battery capacity.
- Only available with a large aluminum case package, which may affect cost.
Get the
Piifox ER95
Battery
- Lighter total weight and significantly lighter package weight.
- Larger 4000mAh battery capacity for longer wireless use.
- Typically available at a lower price point than the CK98.
- Only available with linear switch types, lacking tactile or silent options.
- Vendor description does not mention screw-in stabilizers.
- Less detailed description of internal sound-dampening materials compared to the CK98.
Your priority should guide your choice. Opt for the Coolkiller CK98 if you value a wider selection of switch types, detailed sound dampening for modding, and premium included accessories like the aluminum case. Choose the Piifox ER95 if your main concerns are a lower price, a lighter keyboard for portability, and a slightly larger battery. Both are competent keyboards with screens, but they cater to different secondary needs.
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.
Coolkiller CK98
Piifox ER95
Layout size
98%
96%
Battery
3,750 mAh
4,000 mAh
Switch options
Linear, Silent, Tactile
Linear
Display
TFT
LCD
Weight
1,300 g
1,200 g
- Coolkiller CK98
- Piifox ER95
- Performance
- 6575
- Build quality
- 6573
- Productivity
- 8777
- Customizability
- 7370
- Portability
- 5657
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum, Plastic
- Mount style: Gasket Mount
- Sound dampening
What will you mostly use it for?
The Coolkiller CK98 holds advantages for office use due to silent switches and for modders with its detailed sound-dampening foam and screw-in stabilizers. The Piifox ER95 is the better choice for travel, being lighter with a larger battery. For gaming, programming, and general use, the keyboards are closely matched, sharing core features like hot-swap sockets, gasket mounts, and customizable screens.
It's a tie
- Both offer N-key rollover for simultaneous key presses.
- Both feature south-facing RGB backlighting.
- Both support low-latency 2.4 GHz wireless connections.
Coolkiller CK98 vs Piifox ER95 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 20 specs differ
Coolkiller CK98
Piifox ER95
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
Compare prices
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Coolkiller CK98 vs Piifox ER95: your questions
The Coolkiller CK98 features a TFT (Thin-Film Transistor) display, which the vendor says can show cool patterns, expressions, and custom content. The Piifox ER95 has an LCD screen that its software allows you to customize with uploaded emojis, GIFs, and images.
Yes, both the Coolkiller CK98 and Piifox ER95 feature hot-swappable PCBs. This means you can change the mechanical switches without soldering. Both support 3-pin and 5-pin switch types.
The Piifox ER95 has a larger 4000mAh battery compared to the Coolkiller CK98's 3750mAh battery. While actual runtime depends on usage and lighting, the ER95 has a higher capacity for potential longer use between charges.
Yes, both keyboards have downloadable software drivers. The CK98's vendor provides separate downloads for Windows and Mac. The ER95's vendor provides a Windows driver and states its software is compatible with macOS and Windows for customizing the LCD screen and settings.
The Coolkiller CK98 uses a unique two-layer keycap set with a top layer of dye-subbed PBT and a transparent PC lower layer for backlighting. The Piifox ER95 uses standard ASA profile keycaps made from PBT material, which is known for being durable and resistant to shine.
The Coolkiller CK98 is the better choice for a quiet office as its specifications list silent switch types as an option. The Piifox ER95, according to its specifications and vendor description, is only listed with linear switches, which are not specifically silent.
According to its vendor listing, the CK98 package includes the keyboard, a switch/keycap puller, an aviation plug spring cable, an aluminum frame ammunition case, a 2.4G receiver, a dust cover, and a user manual.
The Piifox ER95's package includes the keyboard, a Type-C cable, a 2.4G receiver, a combined keycap and switch puller, a dust-proof mask, and a user manual.
The Coolkiller CK98 explicitly lists 'screw-in stabilizers' as a feature. The Piifox ER95's vendor description does not specify the type of stabilizers used, so they are likely the more common clip-in style.
Yes, both manufacturers state their keyboards support macOS. The Coolkiller CK98 listing also mentions support for Android, iOS, and numerous Windows versions. The Piifox ER95 listing includes support for Windows, macOS, Android, and Linux.
The Coolkiller CK98's description is more detailed, specifying a three-layer system with a Poron foam switch pad, a silicone pad in front of the PCB, and silicone bottom foam. The Piifox ER95 description mentions a gasket structure with poron foam and sound-absorbing silicone pads on the top and bottom edges of the board.
The Coolkiller CK98 weighs 1300 grams (1.3kg), while the Piifox ER95 weighs 1200 grams (1.2kg). The CK98 is 100 grams heavier, which may contribute to a more solid feel but makes it less portable.
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