AMD EPYC 8224P socket: SP6

What the EPYC 8224P is

The EPYC 8224P is the 24-core single socket Siena server part for SP6 in September 2023. Twenty-four Zen 4c small cores with multithreading run at 2.55 GHz base and up to 3.0 GHz boost with matching all-core boost, backed by 24 MB of L2 and 64 MB of L3. The TSMC 5 nm package targets 160 W inside a 155 to 225 W window for efficient racks that need threads without Genoa power. It sits between 16-core and 32-core Siena options.

Balanced threads with modest power suit virtualised branch clouds and storage nodes that need vCPUs plus server IO. Twenty-four cores share 64 MB of L3 for locality, while 6 DDR5-4800 ECC channels keep board cost down. Ninety-six Gen5 lanes serve networking and NVMe for single-socket designs. Power stays well below 200 W flagships for dense shelves.

Buyers compare the 8224P against Xeon Silver density parts where performance per watt decides. Siena wins single-socket efficiency with 6 channels, while Genoa wins where 12 channels matter. Boards built for SP6 accept the full Siena stack with a BIOS update. The Socket vs chipset: what decides whether a CPU works guide is secondary to SP6 board lists.

Socket and motherboard compatibility

The 8224P fits SP6 on single socket server boards with LGA 4844 frames. Siena is 1P-only, so dual socket pairing is not supported. Board lists must name Siena 8004 for Zen 4c support. Power delivery for 160 W continuous with wide cTDP suits 1U and short-depth chassis.

SP6 boards wire 6 DDR5 channels with one DIMM per channel for best speed in many layouts. BMC firmware covers fleet management. Confirm heatsink height for dense 24-core nodes.

Memory, PCIe and cooling

DDR5-4800 ECC RDIMM in 6 channels feeds 24 small cores for branch clouds. Capacity scales with large DIMMs. ECC stays enabled for uptime. Validated kits at rated speed are required.

PCIe Gen5 gives 96 lanes in single socket plus CXL for networking and NVMe. A 24-core node typically wires NICs plus NVMe arrays. Cooling needs an SP6 server sink for 160 W with front-to-back flow.

Upgrade paths

On single socket SP6 the upward moves are 32-core and higher Siena parts where vCPU counts grow, without adding sockets. Memory growth to 6 channels and networking additions often help more than cores. The 24-core point balances threads and power for branch use.

Outside Siena, Genoa on SP5 adds channels and sockets for larger fabrics. Most 8224P owners expand memory and IO on SP6 first.