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Head to head · Prices checked Nov 12, 2026

FE 21.3 Helios 88 vs Nuphy Halo IO Series

Get the Nuphy Halo IO Series for knob and sound dampening.

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Quick verdict

Which one should you get?

Get the

FE 21.3 Helios 88

Get the

Nuphy Halo IO Series

Knob

Build quality in the top 25% of 65% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

What actually differs

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.

FE 21.3 Helios 88

Nuphy Halo IO Series

  • Case material

    Aluminum

    Aluminum, Plastic

  • Mount style

    Top Mount

    Gasket Mount

  • Knob

    No

    Yes

  • Weight

    2,400 g

    1,028 g

    Heavier boards stay planted and lighter ones travel

  • Sound dampening

    No

    Yes

KeebFinder scores

How we score
  • FE 21.3 Helios 88
  • Nuphy Halo IO Series
Performance
47
78
Build quality
56
77
Productivity
49
91
Customizability
49
79
Portability
44
98

What they share

  • Hot-swappable
See every spec side by side

Full specs

FE 21.3 Helios 88 vs Nuphy Halo IO Series specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

13 of 25 specs differ

FE 21.3 Helios 88

Nuphy Halo IO Series

Typing & switches

Switch options

—
Mechanical

Hot-swappable

Yes
Yes

Mount style

Top Mount
Gasket Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

—
65%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

—
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

—
4,000 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
Aluminum, Plastic

Plate material

Aluminum, CarbonFiber, FR4, Polycarbonate, POM
Polycarbonate, POM

Keycaps

—
PBT

Weight

2,400 g
1,028 g

Dimensions

—
20 x 320 x 135 mm

Typing angle

8°
12°

Backlight

None
RGB, south-facing

Firmware & software

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2025
2025

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

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