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White mid-tower case with glass side panel, mesh feet and vertical GPU mount

Geometric Future

Geometric Future M4 King Arthur White PC case

SKU CH-YN6J-W8EYW

Compact 35 L mid-tower fits E-ATX boards, 400 mm GPUs and 360 mm radiators while offering 31 mm cable space and a vertical GPU mount

  • Max graphics card length400 mm
  • Housing materialABS / Steel / Tempered Glass
  • Supported motherboard sizesATX / E-ATX / Micro ATX / Mini ITX
  • Side panel typeWith Side Window
  • 3.5-inch internal bays2
  • 2.5-inch internal bays4

Color White

  • 35 L compact ATX chassis fits E-ATX boards up to 12×11 in
  • Vertical GPU mount frees internal space for better airflow
  • 2 mm L-shaped glass side panel adds rigidity
  • Mesh footstand filters dust on three sides while feeding three 120 mm fans
  • 31 mm cable-routing depth behind motherboard keeps builds tidy

Build flexibility

The Geometric Future M4 King Arthur White is a 35-litre ATX mid-tower that accepts E-ATX, ATX, Micro-ATX and Mini-ITX motherboards. Builders who want a compact footprint with room for long graphics cards and multiple drive configurations will find the internal layout adaptable to air-cooled or liquid-cooled builds.

Thermals and acoustics

A mesh footstand with integrated dust filters feeds three 120 mm bottom intake fans, while the top panel supports two 120 mm or 140 mm fans or a 240 mm radiator. The 1.0 mm steel chassis and 1.2 mm L-shaped tempered glass side panel keep structure rigid without adding unnecessary mass, helping the case stay quiet during typical gaming or productivity sessions.

Sustained load behaviour

Under continuous load the vertical air tunnel design pulls cool air across the motherboard and graphics card before exhausting it through the top, supporting a 360 mm radiator alongside the 240 mm unit for high-capacity liquid cooling. The 31 mm cable routing channel behind the motherboard tray keeps airflow paths clear, so temperatures remain stable during extended rendering or compute workloads.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $65.99
Cheaper than about 76% of the 1,468 comparable items (median $100.99).
Max graphics card length 400 mm
Typical for this category: the median of 894 items is 400 mm.

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Specifications

Product
Product typeATX / Micro ATX Mid Tower
Storage
3.5-inch internal bays2
2.5-inch internal bays4
Ports & slots
Expansion card slots7
Front panel portsUSB 3.1 Gen 1 / USB 3.1 Type-C / Audio
Power
Power supply includedNo
Size & build
Max graphics card length400 mm
Housing materialABS / Steel / Tempered Glass
Side panel typeWith Side Window
Fan mounting optionsBottom - 3 × 120 mm
Compatibility
Supported motherboard sizesATX / E-ATX / Micro ATX / Mini ITX
CPU cooler height limit164 mm
PSU length limit220 mm

Other versions of this model

1 more in the same range

Questions about this item

How do I install the motherboard in the M4 King Arthur White case, and which step is often missed?

Mount the board on the tray using the standoffs for ATX, E-ATX, Micro-ATX or Mini-ITX, then route every cable through the 31 mm channel behind the tray before securing the side panel; skipping that routing step leaves no room for the glass panel to close.

What maintenance will the M4 King Arthur White need over time?

Pull the mesh footstand off the bottom, top and side to wash the dust filters, and reseat the three 120 mm intake fans if bearing noise appears after extended use.

What thermal limit appears first during a long gaming session in the M4 King Arthur White?

The CPU cooler height cap of 164 mm restricts the size of tower coolers or radiator thickness, so sustained loads hit that ceiling before the 360 mm top radiator or 240 mm bottom radiator limits are reached.

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