Intel Xeon Gold 5318H socket: LGA 4189
The Intel Xeon Gold 5318H uses the LGA 4189 socket. It is a 150 W 18-core Cooper Lake-SP server processor for 4-socket systems, with ECC memory support.
- Socket
- LGA 4189
- Launched
- June 2020
- Cores and threads
- 18 and 36
- Base power
- 150 W
- Codename
- Cooper Lake-SP
- Segment
- Server
- Family
- Intel Xeon Gold
- Clocks
- 2.5 / 3.8 GHz
Intel Xeon Gold 5318H specifications
| Cores | 18 |
|---|---|
| Threads | 36 |
| Core architecture | Skylake-SP (Cooper Lake-SP) |
| Clocks | 2.5 GHz base, up to 3.8 GHz turbo |
| Cache | 24.75 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 150 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4 up to 2666 MT/s ECC, 6 channels, up to 1.12 TB per socket |
| PCI Express | 48 PCIe 3.0 lanes per socket |
| Interconnect | 6× UPI at 10.4 GT/s |
| ECC memory | Yes |
| Package | FCLGA4189, 77.5 × 56.5 mm |
| Sockets supported | Up to 4 sockets |
Motherboard compatibility
Intel Xeon Gold 5318H 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 5318H is
The Xeon Gold 5318H is an 18-core server processor that Intel released in June 2020 with the Cooper Lake-SP range for 4-socket systems. Its Skylake-SP cores run 2.5 GHz base to 3.8 GHz turbo with Hyper-Threading for 36 threads. Cache is 24.75 MB of Intel Smart Cache with 1 MB of L2 per core.
The H suffix marks standard per-socket memory capacity up to 1.12 TB, against HL parts that reach the 4.5 TB tier. The 14 nm process carries bfloat16 instructions for inference work through Deep Learning Boost. Six UPI links at 10.4 GT/s keep four sockets coherent.
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 5318H fits the LGA 4189 socket on Cedar Island boards for Cooper Lake. Whitley boards for Ice Lake-SP 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 H suffix parts.
Four-socket operation is the design point for Xeon Gold H parts, with single and dual socket boards possible where the vendor qualifies them. A buyer building a smaller node should confirm the board supports 4-socket capable parts in fewer sockets before ordering.
Check memory population rules for 4-socket boards when ordering. Twelve DIMMs per socket is the platform shape, and all four sockets should match in capacity and speed for balanced NUMA behavior.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 2666 MT/s in 6 channels, up to 1.12 TB per socket, with ECC support. Dense 4-socket builds use RDIMM pairs across all channels for bandwidth with integrity. Optane persistent memory is a board option on qualifying platforms.
The CPU supplies 48 PCIe 3.0 lanes per socket for network cards and NVMe storage. Four-socket boards split lanes across slots and onboard controllers, so the board specifications state which slots reach full speed. Six UPI links at 10.4 GT/s carry socket to socket traffic.
At 150 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. Multi-socket boards need matched heatsinks with even airflow across all sockets.
Upgrade paths
Against the Intel Xeon Gold 5320H, the 5318H trades two cores for lower cost in the same 150 W envelope. The 20-core part suits denser virtual hosts, while this 18-core part suits balanced database nodes. Both share DDR4-2666 limits and 4-socket boards.
Moving to LGA 4677 needs new boards and DDR5 memory for Sapphire Rapids generations. The 5318H fits a 4-socket database cluster, an in-memory cache tier, or a virtualization farm that stays on DDR4.
For used buyers, the H part makes sense when per-socket memory stays under 1.12 TB. When the workload needs the 4.5 TB tier, an HL part such as the 6328HL class unlocks it on the same platform.
Frequently asked questions
What socket does the Intel Xeon Gold 5318H use?
It uses LGA 4189 on Cedar Island boards for Cooper Lake. Whitley Ice Lake boards share the socket name but do not accept it.
How many cores does the Intel Xeon Gold 5318H have?
18 cores with 36 threads, 2.5 GHz base and up to 3.8 GHz turbo, with 24.75 MB of Intel Smart Cache.
What memory does the Intel Xeon Gold 5318H support?
DDR4 up to 2666 MT/s with ECC in 6 channels, up to 1.12 TB per socket. HL parts reach the 4.5 TB tier.
What graphics does the Intel Xeon Gold 5318H include?
None on the chip. Setup relies on board BMC graphics.
What is the TDP of the Intel Xeon Gold 5318H?
150 W. Vendor-qualified air heatsinks with directed chassis airflow suffice.
Sources and verification
- Cooper Lake (Wikipedia, Xeon Gold H list, 4S, DDR4, bfloat16)
- Intel Xeon Gold 5318H Processor (Intel ARK)
Facts last checked against these sources on . Page last edited on .