Phanteks Eclipse G400A (Black)

Phanteks Eclipse G400A (Black)

A 415 mm-GPU mid tower with four D-RGB 140 mm fans included, a 360 mm top radiator and rear-connector board support.

  • Mid Tower
  • E-ATX, ATX, Micro-ATX, Mini-ITX
  • 415 mm
  • 184 mm

PCPR score

8.1

Great

Best price we’ve seen

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R1

The short version

The Eclipse G400A is the roomier successor to the P400A, with a high-airflow mesh front, four pre-installed 140 mm D-RGB fans and a dedicated 360 mm top radiator mount. Phanteks lists 415 mm GPU clearance, 184 mm coolers, E-ATX boards up to 280 mm wide and support for MSI Project Zero, ASUS BTF and Gigabyte Project Stealth boards. It has two USB ports on the front and a five-year limited warranty.

Pros

  • Four 140 mm D-RGB fans included
  • 360 mm radiator at the top
  • Supports MSI Project Zero, ASUS BTF and Gigabyte Project Stealth boards
  • 415 mm GPU clearance and 184 mm cooler height
  • Five-year limited warranty

Cons

  • No front radiator mount
  • One USB-A port on the front
  • Rear radiator limited to 120 mm

Best for

  • Airflow builds with large GPUs
  • Rear-connector motherboards

J3

Full specifications

Core

Style
Mid Tower

Fit

Motherboard support
E-ATX, ATX, Micro-ATX, Mini-ITX
Back-connect board support
Yes
Max GPU length
415 mm
Max CPU cooler height
184 mm
PSU support
ATX
Max PSU length
270 mm
Expansion slots
7
3.5" bays
2
2.5" bays
3

Cooling

Top radiator
120, 140, 240, 280, 360
Rear radiator
120
Total fan mounts
7
Fans included
4

Ports & I/O

Front USB-C
Yes
Front USB-A
1

Physical

Side panel
Tempered glass
Color
Black
Length
495 mm
Width
230 mm
Height
522 mm
Weight
8.63 kg

Features

Vertical GPU mount
Yes

Compatibility notes

  • GPU up to 415 mm, CPU coolers up to 184 mm, PSUs up to 270 mm.
  • E-ATX boards must be under 280 mm wide.
  • Phanteks lists vertical GPU support (3 slots), riser sold separately.

P1

Where to buy

We may earn a commission when you buy through links on this page. It never affects our scores or what we recommend. Prices move quickly, so confirm the final price at the retailer.

AV1

Video reviews

Overview · Review

Phanteks is Back: Eclipse G400A High Airflow Case Review & Thermal Benchmarks

Gamers Nexus

Gamers Nexus reviews the Phanteks Eclipse G400A airflow case with thermal benchmarks, comparing it against rivals like the Lancool 207.

Mixed · Review

Phanteks Eclipse G400A - we (kinda) like it

KitGuruTech

KitGuruTech reviews the Phanteks Eclipse G400A airflow case, covering its fans, RGB, radiator support and back-connect motherboard compatibility.

AV2

What reviewers and owners say

  • PC Gamer

    Positive

    PC Gamer praises this affordable mid-tower for including four 140mm RGB fans, solid build quality, and easy cable management, though notes plain looks and shaky US availability.

Summaries are written in our words. Follow the links for each source’s own review.

R9

Common questions

Does the G400A support rear-connector motherboards?

Yes. Phanteks lists MSI Project Zero, ASUS BTF and Gigabyte Project Stealth rear-connector boards.

What radiators fit?

A 360 mm radiator at the top (or 280 mm with 140 mm fans) and a 120 mm at the rear.

How many fans come installed?

Four M25-140 Gen2 D-RGB fans: three at the front and one at the rear.

J9Alternatives

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