antec 900

FULL TOWER CASE

Edge AI Workstation & 8K Gaming Full-Tower Chassis HERITAGE - A MODERN 900, BUILT ON A CLASSIC NAME

The Antec Nine Hundred was one of the most recognizable high-airflow cases of its time-known for its open design, aggressive cooling, and expandability that let builders push hardware harder than ever before.

The new Antec 900 is a modern interpretation of that legacy.

EDGE AI & WORK STATION READY

Supports ATX, E-ATX, SSI-CEB, SSI-EEB, and AMD Threadripper.

AI-OPTIMIZED GPU SUPPORT

Built to house multi-GPU / accelerator configurations, including Al-optimized GPUs like NVIDIA RTX 6000 Ada, RTX A6000, and comparable compute cards.

GPU & ACCELERATOR SUPPORT

Designed around professional accelerator cards and full-length, triple-slot GPUs used in AI, compute, and 8K-capable gaming.

SUPPORTS GPUS UP TO 495 MM LONG AND UP TO 160 MM THICK

Spacious interior accommodates multi-accelerator layouts, blower-style compute cards, or mixed GPU + add-in card setups.

STORAGE &
DATA READINESS

The "900" isn't just a name-it's built in. The 9 total drive bays nod directly to the original's storage flexibility, now reimagined for Al datasets, scratch disks, project libraries, and RAID.

UP TO 9 TOTAL DRIVE BAYS

5 x 2.5" and 4 3.5" (or convertible for more 2.5" )

POWERFUL AIRFLOW PATH DESIGN

Features ultra case structure design for excellent airflow,delivering enhanced GPU cooling performance.

INCLUDED FANS FOR ENHANCED COOLING PERFORMANCE

Equipped with 6 high-performance pre-installed fans, the 900 further optimizes its airflow design to deliver more stable and superior overall cooling efficiency.

PRE-INSTALLED 6 X HIGH-PERFORMANCE PWM FANS

3 x TQ140 high-performance 140 mm front intake fans.
2 x PI2R reverse-flow 120 mm fans on the PSU shroud to stabilize chamber airflow.
1 x TQ140 140 mm rear exhaust fan.

ADJUSTABLE FAN BRACKET SUPPORTS MULTIPLE FAN SIZES

Support for 2 x 200 mm front intake fans for high-volume, low-RPM airflow in noise-sensitive environments.

MULTI-DIRECTIONAL VENT DESIGN

SERIOUS COOLING HEADROOM

Radiator Support: Front up to 420 mm (<52 mm thickness). Top up to 360 mm (<52 mm thickness).

Fan & Radiator Support

INNOVATIVE
ISHIFT PSU 90° MOUNT

I/O Panel

Equipped with one high-speed USB Type-C 10Gbps port.

SUPPORT BACK-CONNECT MOTHERBOARDS

Plug in cables from behind to give front a cleaner look and a smoother airflow channel.

COMES WITH
8 REUSABLE PCIE SLOTS

8 expansion slots provide room for accelerators, capture cards, high-speed networking, and storage controllers.

TOOL-FREE PANEL DESIGN

4 mm tempered-glass side panel, tool-free for quick access.

REMOVABLE TOP COOLING BRACKET

Mount the fans/radiators on the cooling bracket first and install the cooling bracket back to the case.

FULL DUST FILTRATION ON THE FRONT, TOP, AND BOTTOM

• Top | Magnetic dust filter.
• Front | Magnetic dust filter.
• Bottom | Full-sized pull-out dust filter

OPTIMAL CABLE ROUTING EXPERIENCE

Extensive Interior

• Motherboard support ATX, E-ATX, SS-CEB,SSI-EEB, Threadripper, (Supports Back-Connect Motherboards)
• CPU cooler max height ≤ 190 mm
• GPU max length ≤ 495 mm ( 465mm with front fans installed )
• Total GPU Thickness + CPU Cooler Height 190mm
• Max GPU Thickness 160mm (cable excluded)

• Max PSU Size ≤230mm (cable excluded) /
  ≤170mm (side mount)
• Expansion Slots 8
• 3.5" / 2.5" 4/4
• 2.5" 5