ASRock Rack Had One of the First Arm AGI Servers at Computex 2026 - ServeTheHome
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ASRock 1U4E1S ARM AGI CPU
One of the more fascinating stories in the tech world this year has been Arm’s push to develop and sell its own server CPUs. The long-time IP and architecture vendor ruffled more than a few feathers with the announcement that it would be designing its own chips, but the die was cast long ago, as Arm has watched demand for Arm architecture server chips explode around it.
Arm’s first server chip will be the Arm AGI, which the IP designer turned chip designer announced back in March. AGI is not scheduled to enter volume production until later this year, but with the red-hot market for server CPUs right now, Arm’s Taiwanese partners have been eager to get the next era of Arm started. So when Patrick told me that he found out that ASRock Rack’s booth had an AGI server on display, visiting ASRock Rack quickly became mandatory.
ASRock 1U4E1S-ARM: One AGI CPU in 1U
While Arm’s first big (announced) direct customer is Meta, ASRock Rack is a launch supporter for Arm’s AGI CPU launch. The company announced a server design back in March alongside the AGI announcement with their dual node, 2OU 2OU2N-ARM server. That server will be equipped with two compute nodes, each powered by ASRock’s ARMD12M3 motherboard. The substantial 2OU server is not the only product ASRock is using that AGI motherboard in: it will also be going in a more petite 1U server. That brings us to the 1U4E1S-ARM.
ASRock Rack 1U4E1S ARM Server<br>This ASRock Rack 1U4E1S-ARM is, for all intents and purposes, half the performance of ASRock’s larger 2U server in half the size, going from two processors in 2U to one processor in 1U.
The star of the show here is, of course, the Arm AGI CPU. Fabbed on TSMC’s 3nm process, the CPU packs in 136 of Arm’s Neoverse V3 cores. Arm’s clockspeed targets are somewhat modest here, with the highest-clocked chip topping out at 3.7GHz, so it would be fair to say that the AGI is more geared towards higher-density CPU deployments than high-performance (low-core-count) configurations. The chips will run at a base TDP of 300W, which is similar to other contemporary server CPUs, perhaps even a bit lower.
ASRock Rack 1U4E1S ARM AGI CPU Reverse<br>Feeding Arm’s new server CPU cores are 12 channels of DDR5 memory, with a maximum clockspeed of DDR5-8800. Memory bandwidth and memory channels have become a new battlefront between server CPU vendors as an ever larger number of cores requires more bandwidth to feed them. All the while, agenetic AI workloads threaten to shift computing patterns towards more cores being more consistently busy. Motherboard vendors have their work cut out for them in routing all of those memory channels. In ASRock Rack’s case, they opted to keep things simple and skinny, with just 1 DIMM per channel, split between the left and right sides of the chip.
The AGI is also part of the first generation of server CPUs offering PCIe Gen6 connectivity, making PCIe lane routing, retiming, and reliability the other big challenge for motherboard vendors. The chip itself...