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.

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.

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.

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.

SPECIFICATIONS

Main spec

Dimensions  : 547 x 250 x 622 mm (DWH)

Form Factor Full Tower

Materials: Aluminum + Steel + Plastic + Glass

Mainboard Support : ATX, E-ATX, SS-CEB,SSI-EEB , Threadripper, (Supports Back-Connect Motherboards)

Top Access & Controls : Power, USB 3.0 x 2, Type-C 10Gbps x 1, Headphone/Mic Combo Jack

Side Panel : 4mm Tempered Glass

Expansion & Drive Bays

Expansion Slots : 8

3.5" / 2.5"  : 4 / 4

2.5" 5

Cooling

Front  : 2 x 200mm / 3 x 140mm / 3 x 120mm

Top 2 x 140mm / 3 x 120mm

Power Supply Shroud 2 x 120mm

Rear : 1 x 120mm / 1 x 140mm

Included Fan(s)  : 3 x 140mm at the front + 2 x 120mm reverse fans at the PSU shroud + 1 x 140mm at the rear

Radiator Support

Front: 120 / 140 / 240 / 280 / 360 / 420mm (52mm thickness)

Top 120 / 140 / 240 / 280 / 360mm (52mm thickness)

Clearance

Max GPU Length ≤ 495mm (≤ 465mm with front fans installed)

Total GPU Thickness + CPU Cooler Height : ≤ 190mm

Max GPU Thickness : ≤ 160mm (cable excluded)

Max CPU Cooler Height  : ≤ 190mm

Max PSU Size  :  ≤230mm (cable excluded) / ≤ 170mm (side mount)

Miscellaneous

Dust Filter   : Front, Top, Bottom