ASRock Rack Shows 1U4E1S-ARM Server For Arm AGI

ASRock Rack’s 1U4E1S-ARM server gives Arm’s planned AGI CPU an early rack design, with ServeTheHome reporting from Computex 2026 that the 1U chassis uses one AGI processor and is aimed at dense CPU deployments rather than a GPU-heavy accelerator box.

The specialist hardware report said ASRock Rack was showing the 1U4E1S-ARM at its booth, using the same ARMD12M3 motherboard family that the company had already tied to a larger dual-node 2OU2N-ARM design.

ServeTheHome said the larger 2OU system uses two compute nodes, while the 1U4E1S-ARM moves to one processor in a 1U chassis.

The Computex display showed hardware readiness without a finished customer deployment.

ServeTheHome said Arm announced the AGI CPU in March, that AGI is not scheduled to enter volume production until later in 2026, and that ASRock Rack is a launch supporter for the AGI CPU launch.

The report framed ASRock Rack’s board and chassis work as preparation for the CPU ramp, not evidence of shipped systems.

Arm AGI Spec Lists 136 Neoverse V3 Cores

ServeTheHome reported that the Arm AGI CPU is fabbed on TSMC’s 3nm process and packs 136 Arm Neoverse V3 cores.

The report said the highest-clocked AGI part targets 3.7GHz and runs at a base TDP of 300W.

ServeTheHome also listed 12 channels of DDR5 memory with a maximum speed of DDR5-8800.

The report said ASRock Rack used one DIMM per channel, split between the left and right sides of the processor, to route the memory channels on the compact motherboard.

The I/O specification is the other disclosed constraint.

ServeTheHome reported that AGI supports 96 lanes of PCIe Gen6 and can run CXL 3.0 on top of that interface.

The report said the 1U4E1S-ARM exposes about 80 lanes across drive bays and expansion cards.

PCIe Gen6 Slots And E1.S Bays Define The 1U Layout

ServeTheHome reported that the ASRock Rack chassis includes one full-height, full-length PCIe Gen6 x16 slot and one half-height, half-length PCIe Gen6 x16/x8 slot.

The report said another 16 lanes feed an OCP NIC 3.0 slot.

For storage, ServeTheHome listed two internal M.2 slots toward the rear of the system and four front hot-swap E1.S bays rated for PCIe Gen5 x4 speeds.

The report also said the server uses two redundant 800 Watt 80 PLUS Titanium power supplies, keeping power redundancy in the disclosed 1U design.

ServeTheHome added one unresolved board-level item.

The report said it spotted a pair of QSFP ports, but that it was not clear how those ports were configured or which controller ASRock Rack used.

ASRock Rack Has Not Listed Pricing Or Launch Date

The disclosed system details show how Arm’s in-house server CPU could reach rack vendors before broad volume production.

They do not show a customer roll-out.

ServeTheHome said ASRock Rack had not released further details on the server and that the 1U4E1S-ARM was not yet listed on ASRock Rack’s website.

The report identified Meta as Arm’s first announced direct customer for AGI, but did not say that Meta would use ASRock Rack’s 1U system.

ASRock Rack has not disclosed pricing, customer deployments, order volumes, a commercial launch date for the 1U4E1S-ARM or the QSFP controller configuration.