Intel Xeon Silver 4309Y socket: LGA 4189
The Intel Xeon Silver 4309Y uses the LGA 4189 socket. It is a 105 W 8-core Ice Lake-SP server processor with ECC memory support.
- Socket
- LGA 4189
- Launched
- April 2021
- Cores and threads
- 8 and 16
- Base power
- 105 W
- Codename
- Ice Lake-SP
- Segment
- Server
- Family
- Intel Xeon Silver
- Clocks
- 2.8 / 3.6 GHz
Intel Xeon Silver 4309Y specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Sunny Cove (Ice Lake-SP) |
| Clocks | 2.8 GHz base, up to 3.6 GHz turbo |
| Cache | 12 MB |
| Processor base power (TDP) | 105 W |
| Manufacturing process | 10 nm |
| Memory support | DDR4 up to 2666 MT/s ECC, 8 channels, up to 6 TB per socket |
| PCI Express | 64 PCIe 4.0 lanes per socket |
| Interconnect | 2× UPI at 10.4 GT/s |
| ECC memory | Yes |
| Package | FCLGA4189, 77.5 × 56.5 mm |
| Sockets supported | Up to 2 sockets |
Motherboard compatibility
Intel Xeon Silver 4309Y needs a motherboard with a LGA 4189 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 4189 chipset list and the board maker's CPU support list.
LGA 4189 at a glance
| Type | LGA, 4,189 contacts |
|---|---|
| Package size | 77.5 × 56.5 mm |
| Introduced | April 2020 |
| Memory | DDR4 with ECC, up to 8 channels on Ice Lake-SP and 6 channels on Cooper Lake-SP |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon Silver 4309Y is
The Xeon Silver 4309Y is an 8-core server processor that Intel released in April 2021 with the Ice Lake-SP range for 2-socket systems. Its Sunny Cove cores run 2.8 GHz base to 3.6 GHz turbo with Hyper-Threading for 16 threads. Cache is 12 MB with 1.25 MB of L2 per core.
The Y suffix marks Speed Select Performance Profile support for cloud roles that tune cores to workload needs. The 10 nm process pairs 8 channels of DDR4 with 64 PCIe 4.0 lanes for fast storage and accelerators. Two-socket operation keeps scale out cost below larger Platinum builds.
There is no integrated graphics on this model, so setup relies on board BMC graphics. ECC memory support guards data across long uptime. The socket package is FCLGA4189 at 77.5 × 56.5 mm.
Socket and motherboard compatibility
The 4309Y fits the LGA 4189 socket on Whitley boards for Ice Lake-SP. Cedar Island boards for Cooper Lake share the socket name but do not accept this chip, so the board generation must match the processor generation. The server vendor CPU support list names the exact boards for Silver parts.
Two-socket operation is the design point for Xeon Silver parts, with single socket boards possible where the vendor qualifies them. A buyer building dense 2-socket nodes should confirm per-socket licensing before choosing 8 cores over larger Silvers.
Check memory population rules for 2-socket boards when ordering. Sixteen DIMM slots per socket is the platform shape, and both sockets should match in capacity and speed.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 2666 MT/s in 8 channels, up to 6 TB per socket, with ECC support. Cloud nodes use RDIMM pairs across all channels for bandwidth with integrity. Optane persistent memory is a board option on qualifying platforms.
The CPU supplies 64 PCIe 4.0 lanes per socket for network cards and NVMe storage. Two-socket boards split lanes across slots and onboard controllers, so the board specifications state which slots reach full speed. Two UPI links at 10.4 GT/s carry socket to socket traffic.
At 105 W, vendor-qualified air heatsinks with strong directed chassis airflow suffice. Mounting is board specific with no retail pattern, and the CPU cooler compatibility by socket guide explains why server sockets list no desktop bracket.
Upgrade paths
Against the Intel Xeon Silver 4310, the 4309Y trades cores for higher clocks at lower power. The 12-core part suits denser guests, while this 8-core Y part suits tuned cloud roles with profile support. Both share Whitley boards and DDR4-2666 limits.
Moving to LGA 4677 needs new boards and DDR5 memory for Sapphire Rapids generations. The 4309Y fits a cloud node, a scale out web tier, or a storage controller with light compute.
For used buyers, the Y part makes sense when profile tuning matters. When thread density matters more, the 12-core Silver adds threads on the same board.
Frequently asked questions
What socket does the Intel Xeon Silver 4309Y use?
It uses LGA 4189 on Whitley boards for Ice Lake-SP. Cedar Island Cooper boards share the socket name but do not accept it.
How many cores does the Intel Xeon Silver 4309Y have?
8 cores with 16 threads, 2.8 GHz base and up to 3.6 GHz turbo, with 12 MB of cache.
What memory does the Intel Xeon Silver 4309Y support?
DDR4 up to 2666 MT/s with ECC in 8 channels, up to 6 TB per socket.
What does the Y suffix mean on the Xeon Silver 4309Y?
The Y marks Speed Select Performance Profile support for tuned cloud roles.
What is the TDP of the Intel Xeon Silver 4309Y?
105 W. Vendor-qualified air heatsinks with directed chassis airflow suffice.
Sources and verification
- List of Intel Xeon processors Ice Lake-based (Silver 4309Y 2.8 to 3.6 GHz, 105 W)
- Intel Xeon Silver 4314 specifications (Intel, same Silver family platform data)
Facts last checked against these sources on . Page last edited on .