Intel Xeon Platinum 8354H socket: LGA 4189
The Intel Xeon Platinum 8354H uses the LGA 4189 socket. It is a 205 W 18-core Cooper Lake-SP server processor for 8-socket systems, with ECC memory support.
- Socket
- LGA 4189
- Launched
- June 2020
- Cores and threads
- 18 and 36
- Base power
- 205 W
- Codename
- Cooper Lake-SP
- Segment
- Server
- Family
- Intel Xeon Platinum
- Clocks
- 3.1 / 4.3 GHz
Intel Xeon Platinum 8354H specifications
| Cores | 18 |
|---|---|
| Threads | 36 |
| Core architecture | Skylake-SP (Cooper Lake-SP) |
| Clocks | 3.1 GHz base, up to 4.3 GHz turbo |
| Cache | 24.75 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 205 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4 up to 3200 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 8 sockets |
Motherboard compatibility
Intel Xeon Platinum 8354H 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 Platinum 8354H is
The Xeon Platinum 8354H is an 18-core server processor that Intel released in June 2020 with the Cooper Lake-SP range for 8-socket systems. Its Skylake-SP cores run 3.1 GHz base to 4.3 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 chip holds the highest clocks of the 18-core Cooper parts at 205 W for roles that prize single thread speed across many sockets. The 3.1 GHz base keeps all socket work fast for databases that span the system. The 14 nm process carries bfloat16 instructions for inference work through Deep Learning Boost.
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 8354H 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.
Eight-socket operation is the design point for Xeon Platinum H parts, with smaller configurations possible where the vendor qualifies them. A buyer scaling past four sockets must choose Platinum, since Gold H parts stop at four. Confirm power delivery for 205 W parts before ordering.
Check memory population rules for large boards when ordering. Twelve DIMMs per socket is the platform shape, and all sockets should match in capacity and speed.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 3200 MT/s in 6 channels, up to 1.12 TB per socket, with ECC support. Fast multi-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. Multi-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 205 W, vendor-qualified performance air or liquid 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 Platinum 8353H, the 8354H adds clocks at higher power in the same 18-core layout. The 150 W part suits dense nodes at lower heat, while this 205 W part suits databases that hold high speed across sockets. Both share 8-socket boards and DDR4-3200 limits.
Moving to LGA 4677 needs new boards and DDR5 memory for Sapphire Rapids generations. The 8354H fits a fast 8-socket database cluster, a large analytics system, or a cloud node with burst needs.
For used buyers, the clock-focused Platinum H part makes sense when single thread speed spans sockets. When heat limits dominate, the 150 W twin gives the same cores for less cooling on the same platform.
Frequently asked questions
What socket does the Intel Xeon Platinum 8354H 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 Platinum 8354H have?
18 cores with 36 threads, 3.1 GHz base and up to 4.3 GHz turbo, with 24.75 MB of Intel Smart Cache.
What memory does the Intel Xeon Platinum 8354H support?
DDR4 up to 3200 MT/s with ECC in 6 channels, up to 1.12 TB per socket.
What graphics does the Intel Xeon Platinum 8354H include?
None on the chip. Setup relies on board BMC graphics.
What is the TDP of the Intel Xeon Platinum 8354H?
205 W. Performance air or liquid heatsinks with strong directed chassis airflow are needed.
Sources and verification
- Cooper Lake (Wikipedia, Xeon Platinum H list, 8S, DDR4, bfloat16)
- Intel Xeon Platinum 8354H Processor (Intel ARK)
Facts last checked against these sources on . Page last edited on .