Phanteks Eclipse G400A ATX Mid-Tower PC Case White

Phanteks Eclipse G400A ATX Mid-Tower PC Case White

Case • Phanteks • $ 99.99

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Overview

Phanteks Eclipse G400A White: A High-Airflow Mid-Tower for Enthusiasts

The Phanteks Eclipse G400A ATX Mid-Tower PC Case in White is engineered for builders who demand exceptional airflow, modern connectivity, and a clean aesthetic. With four pre-installed 140mm M25 Gen2 D-RGB fans, this case delivers outstanding cooling performance out of the box, making it an ideal foundation for high-performance gaming rigs, content creation workstations, and enthusiast builds.

Key Features and Design

The G400A features a steel body with a tempered glass side panel, allowing you to showcase your components and RGB lighting. The front mesh panel and integrated dust filters ensure maximum airflow while keeping your system clean. The case supports a wide range of motherboards, from Mini-ITX to E-ATX (up to ~280mm width), providing flexibility for various build configurations.

  • Pre-installed Cooling: Four 140mm M25 Gen2 D-RGB fans (3 front, 1 rear) provide exceptional airflow and vibrant lighting.
  • Modern Front I/O: Includes a USB-C Gen2 port (10Gbps), two USB-A Gen1 ports, and separate headphone and microphone jacks for convenience.
  • Spacious Interior: Supports graphics cards up to 415mm, CPU coolers up to 184mm, and ATX power supplies up to 270mm, accommodating the latest high-end hardware.
  • Versatile Radiator Support: Top mount supports up to 360mm or 280mm radiators, while the rear supports a 120mm radiator, enabling custom liquid cooling loops.
  • Storage Options: Two 3.5" drive bays and two 2.5" drive mounts provide ample space for HDDs and SSDs.

Performance and Compatibility

With a maximum GPU length of 415mm and CPU cooler clearance of 184mm, the G400A can handle virtually any flagship graphics card and tower cooler on the market. The case supports ATX and EPS power supplies, and its bottom-mounted PSU compartment includes a dust filter for easy maintenance. The seven expansion slots allow for multi-GPU setups or additional PCIe cards.

Who Is It For?

This case is perfect for gamers, PC enthusiasts, and professionals who prioritize airflow and aesthetics. Whether you're building a high-end gaming PC with a large GPU and liquid cooling, or a quiet workstation with multiple drives, the Phanteks Eclipse G400A White offers the space, cooling, and style to meet your needs.

In summary, the Phanteks Eclipse G400A White is a well-rounded mid-tower case that combines excellent thermal performance, modern features, and a sleek white design, making it a top choice for any new build.

Key Specifications

Motherboard Support: Mini-ITX, Micro-ATX, ATX, E-ATX (up to ~280 mm width)
Type: Mid-Tower
Total USB Ports: 1X USB-C (Gen2), 2X USB-A (Gen1), plus headphone & mic jacks
Weight: ≈ 8.63 kg (net)
Radiator Compatibility: Front – no official support / not recommended Top – up to 360 / 280 mm Motherboard Tray (side mount) – not listed / no official side mount radiator support Rear – up to 120 mm
Drive Bays: 2X 3.5″ + 2X 2.5″
Expansion Slots: 7 (full height)
Expansion Card Length: Up to 415 mm
CPU Cooler Clearance: ≈ 184 mm
PSU Support: ATX PSU (bottom-mounted), up to 270 mm
Cooling Fan Support: Front – 3X 140 mm (pre-installed) Top – up to 3X 120 mm or 2X 140 mm (plus radiator support) Rear – 1X 120 mm / 1X 140 mm option Motherboard tray side – not supported / not listed
Included Fans: 4 × 140 mm M25 Gen2 D-RGB fans
Chassis Material: Steel body, tempered glass side panel, mesh / dust filters
Dimensions (D×W×H): 495 × 230 × 522 mm
Front I/O: 1X USB-C (Gen2), 1X USB-A (Gen1), headphone & mic jacks, Power & Reset buttons

Detailed Parameters

Supported Form Factors:
E-ATX, Micro-ATX, ATX, Mini-ITX
Supported PSU Form Factors:
ATX, EPS
Maximum GPU Length in mm:
415
Maximum Cooler Height in mm:
184
Maximum Radiator Length in mm:
360

Where to Buy

Pros

  • Excellent airflow with four pre-installed 140mm D-RGB fans
  • Supports large GPUs up to 415mm and tall CPU coolers up to 184mm
  • Modern front I/O with USB-C Gen2 and two USB-A ports
  • Clean white design with tempered glass side panel
  • Versatile radiator support for custom liquid cooling

Cons

  • No front radiator support, limiting liquid cooling options
  • Side mount radiator not supported, reducing flexibility
  • Weighs around 8.63 kg, which may be heavy for some users

Frequently Asked Questions

Does the Phanteks Eclipse G400A White support E-ATX motherboards?

Yes, it supports E-ATX motherboards up to approximately 280mm in width, along with ATX, Micro-ATX, and Mini-ITX.

How many fans are included with the G400A White?

The case includes four 140mm M25 Gen2 D-RGB fans: three pre-installed in the front and one at the rear.

Can I install a 360mm radiator in the G400A White?

Yes, the top mount supports up to a 360mm radiator (or 280mm). The rear supports up to 120mm. Front radiator support is not recommended.

What is the maximum GPU length supported?

The G400A White supports graphics cards up to 415mm in length, accommodating most high-end GPUs.

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