SilverStone has revealed its 2026 edition of the Alta T1 aluminum unibody super tower PC chassis, designed for builds that need extreme power and cooling. Go big or go home is definitely the sentiment with the Alta T1, which originally made its debut in 2024, and while obviously aimed at workstation, AI, and productivity tasks, there’s no denying some PC enthusiast could make use of all that space and cooling options to build a kaiju-sized gaming rig made to run silently and chomp its way through anything.
With space for up to 3x 420mm radiators, 2x power supplies (including redundant server-grade), and GPUs up to 549mm in length, the Alta T1 provides a lot of options. It can also fit up to a mixture of nine 3.5″/2.5″ drives, thus providing a wide range of storage options.
Specifications and Features:
- Model No.: SST-ALT1B
- Material: Aluminum unibody frame, steel
- Motherboard Compatibility: SSI-EEB/ SSI-CEB/ Extended ATX/ ATX/ Micro-ATX/ Mini-ITX
- Internal Drive Bays: 3.5″ x 2(without left-side radiator or fan installed), 3.5″ or 2.5″X2 , 2.5″ x 5
- Cooling system: Front (*Supports 120mm × 2 reservoir, or distro plate only), Rear (120mm × 1 (pre-installed 120mm x 1 black fan), Top (140mm x 3 / 120mm x 3 / 160mm x 3), Side Left Side 140mm x 3 / 120mm x 3 (pre-installed 140mm x 3 black fan), Right side 140mm x 3 /120mm x3
- Radiator support: Rear 120mm, Top 120 /140 / 240 / 280 / 360/ 420mm, Side Left Side 120 /140 / 240 / 280 / 360/ 420mm(*(Second PSU installation NOT supported)) Right side 120 /140 / 240 / 280 / 360/ 420mm
- Limitation of CPU cooler: w/ expansion card retainer: 165mm, w/o expansion card retainer: 188mm
- Expansion slot: 8
- Limitation of expansion card: Length w right side radiator: 404mm, w/o right side radiator: 549mm
- Width, w/ expansion card retainer: 162mm, w/o expansion card retainer: 193mm
- Power supply: Primary: ATX / Mini Redundant / 2U CRPS Redundant, Secondary: ATX( *When a second ATX PSU is installed, the left-side radiator/fan mounts and the two drive bays behind the PSU cage cannot be installed.)
- Limitation of PSU: Primary: 320mm, Secondary: Unlimited
- Front I/O port: USB Type-C x 2, USB 3.0 x 2, Combo audio x 1
- Dimension: 250 mm (W) × 669 mm (H) × 592 mm (D), 99 liters. 9.84″ (W) × 26.34″ (H) × 23.31″ (D), 99 liters
- *Height includes 52 mm caster wheels.
- 4.3–8.0 mm thick aluminum unibody frame for exceptional rigidity and clean aesthetics
- Supports SSI-EEB/ SSI-CEB/ Extended ATX/ ATX/ Micro-ATX/ Mini-ITX motherboards
- Up to four GPUs supported with 8 standard PCI / PCIe expansion slots
- Extreme cooling support with up to 3 × 420mm radiators
- Dual PSU support: 2U CRPS, mini-redundant and standard ATX
- Maximum GPU length up to 549 mm
- Supports up to 9 drives with flexible 3.5″ / 2.5″ configurations
- Front I/O includes 2 × USB Type-C, 2 × USB 3.0, and combo audio