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The ASUS RS501A-E12-RS12U is a new, single-socket 1U rack server built on AMD's EPYC 9005 series platform — a purpose-built machine for organizations that need serious compute and storage density without giving up rack space to do it. Single-socket efficiency, 24 DIMM slots of DDR5 memory, and 12 fully NVMe-capable bays make this one of the more capable 1U platforms available at this price point, and it ships configured exactly to the options you select.
When it comes to the processor, the AMD EPYC 9005 series does a lot of work in a single socket — options on this listing run from 24-core configurations up through 96-core variants, covering everything from general-purpose workloads to high-thread-count compute. Memory scales to 2TB across 24 DIMM slots of DDR5 RDIMM at 4800MT/s, which gives memory-intensive applications genuine headroom. On storage, all 12x 2.5" SFF bays are NVMe capable via U.2 PCIe — worth noting because 12 hot-swap NVMe bays in a 1U chassis is a combination that's hard to find. The backplane supports U.2 NVMe PCIe SSDs, SATA SSDs, and SATA HDDs, so you're not locked into a single storage approach.
This is a workhorse platform that thrives in environments like:
- NVMe-dense storage and caching tiers — 12 hot-swap NVMe bays in 1U is a compelling ratio for teams building fast storage or tiered caching infrastructure
- High-core-count compute workloads — up to 96 cores in a single socket keeps the platform power-efficient while still covering CPU-heavy analytical and simulation tasks
- Database and in-memory analytics — large DDR5 memory capacity pairs naturally with databases and analytics engines that benefit from fast, low-latency memory access
- Virtualization and containerized environments — high vCPU density and generous DIMM capacity make this a solid host for consolidated VM or container workloads
- General-purpose enterprise compute — the 1U form factor and PCIe Gen5 expansion make it adaptable across a wide range of rack deployments where space is a real constraint
- Edge data center and colocation deployments — single-socket efficiency and a compact chassis are practical advantages when rack space carries a real cost
Power is handled by a 1+1 redundant pair of 1200W/1600W 80 PLUS Titanium power supplies — a high-efficiency, fault-tolerant configuration appropriate for always-on production environments. Remote management comes via the included ASUS ASMB11-iKVM, providing out-of-band access for console redirection, power control, and monitoring without requiring a KVM or physical presence. Three PCIe Gen5 x16 slots plus an OCP 3.0 Mezzanine socket give you room to add networking and add-in cards to match your environment.
The ASUS RS501A-E12-RS12U is built for production from day one — new hardware, configured to order, backed by a 90-day warranty, and typically shipping within 3–5 business days. One thing that stands out here is how much this platform delivers without requiring a dual-socket chassis or the power budget that comes with one. Enterprise-grade performance at a price point that makes sense.
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