Intel Xeon Gold 6312U socket: LGA 4189
The Intel Xeon Gold 6312U uses the LGA 4189 socket. It is a 185 W 24-core Ice Lake-SP uniprocessor for single-socket servers, with ECC memory support.
- Socket
- LGA 4189
- Launched
- April 2021
- Cores and threads
- 24 and 48
- Base power
- 185 W
- Codename
- Ice Lake-SP
- Segment
- Server
- Family
- Intel Xeon Gold
- Clocks
- 2.4 / 3.6 GHz
Intel Xeon Gold 6312U specifications
| Cores | 24 |
|---|---|
| Threads | 48 |
| Core architecture | Sunny Cove (Ice Lake-SP) |
| Clocks | 2.4 GHz base, up to 3.6 GHz turbo |
| Cache | 36 MB |
| Processor base power (TDP) | 185 W |
| Manufacturing process | 10 nm |
| Memory support | DDR4 up to 3200 MT/s ECC, 8 channels, up to 4 TB |
| PCI Express | 64 PCIe 4.0 lanes |
| Interconnect | DMI 3.0 (uniprocessor, no UPI links) |
| ECC memory | Yes |
| Package | FCLGA4189, 77.5 × 56.5 mm |
| Sockets supported | 1P only |
Motherboard compatibility
Intel Xeon Gold 6312U 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 Gold 6312U is
The Xeon Gold 6312U is a 24-core server processor that Intel released in April 2021 with the Ice Lake-SP range for single-socket systems. Its Sunny Cove cores run 2.4 GHz base to 3.6 GHz turbo with Hyper-Threading for 48 threads. Cache is 36 MB with 1.25 MB of L2 per core.
The U suffix marks uniprocessor operation with DMI links instead of UPI, so the chip runs alone without multi-socket cost. The 10 nm process pairs 8 channels of DDR4-3200 with 64 PCIe 4.0 lanes for fast storage and network cards. Single socket boards cost less than 2-socket platforms with the same cores.
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 6312U fits the LGA 4189 socket on Whitley single-socket 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 single-socket boards for U suffix parts.
Single socket operation is the only option, with DMI links and no UPI on the die. A buyer who needs 24 cores without paying for a 2-socket board chooses this model over dual processor parts. Confirm the board is a single-socket Whitley design before ordering.
Check memory population rules for single-socket boards when ordering. Sixteen DIMM slots is the platform shape, and filling all channels feeds both cores and drives.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 3200 MT/s in 8 channels, up to 4 TB, with ECC support. Single-socket nodes use RDIMM pairs across all channels for bandwidth with integrity. The controller does not accept DDR5.
The CPU supplies 64 PCIe 4.0 lanes for network cards and NVMe storage. Single-socket boards give all lanes to one processor, so slot layout is simpler than on 2-socket boards. The board specifications state which slots reach full speed.
At 185 W, vendor-qualified performance air heatsinks with strong directed chassis airflow are needed. 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 Gold 6314U, the 6312U trades cores for lower power in the same uniprocessor pair. The 32-core part suits denser single nodes, while this 24-core part suits balanced hosts at 185 W. Both share single-socket Whitley boards and DDR4-3200 limits.
Moving to LGA 4677 needs new boards and DDR5 memory for Sapphire Rapids generations. The 6312U fits a single-socket virtual host, a dense edge server, or a storage node with many threads.
For used buyers, the 24-core U part makes sense when one socket must hold the whole workload. When two sockets are possible, dual processor Gold parts scale further on Whitley boards.
Frequently asked questions
What socket does the Intel Xeon Gold 6312U use?
It uses LGA 4189 on single-socket Whitley boards for Ice Lake-SP.
How many cores does the Intel Xeon Gold 6312U have?
24 cores with 48 threads, 2.4 GHz base and up to 3.6 GHz turbo, with 36 MB of cache.
What memory does the Intel Xeon Gold 6312U support?
DDR4 up to 3200 MT/s with ECC in 8 channels, up to 4 TB.
What does the U suffix mean on the Xeon Gold 6312U?
The U marks uniprocessor operation with DMI links and no UPI, so the chip runs alone in one socket.
What is the TDP of the Intel Xeon Gold 6312U?
185 W. Performance air heatsinks with strong directed chassis airflow are needed.
Sources and verification
- List of Intel Xeon processors Ice Lake-based (Gold 6312U 2.4 to 3.6 GHz, 185 W, uniprocessor)
- Intel Xeon Gold 6312U Processor (Intel ARK)
Facts last checked against these sources on . Page last edited on .