Intel Xeon Gold 5418N socket: LGA 4677
The Intel Xeon Gold 5418N uses LGA 4677, the 4677-contact LGA socket for Sapphire Rapids server processors. The 24-core chip at 165 W needs a server board with DDR5 memory.
- Socket
- LGA 4677
- Launched
- January 2023
- Cores and threads
- 24 and 48
- Base power
- 165 W
- Codename
- Sapphire Rapids
- Segment
- Server
- Family
- Intel Xeon Gold
- Clocks
- 1.8 / 3.8 GHz
Intel Xeon Gold 5418N specifications
| Cores | 24 |
|---|---|
| Threads | 48 |
| Core architecture | Golden Cove (Sapphire Rapids) |
| Clocks | 1.8 GHz base, up to 3.8 GHz turbo |
| Cache | 45 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 165 W |
| Manufacturing process | Intel 7 |
| Memory support | DDR5 to 4800 MT/s, 8 channels |
| PCI Express | 80 PCIe Gen5 lanes with Flex Bus and CXL per CPU |
| Multiplier | Locked |
| Package | LGA 4677 |
| Cooler in the box | None (server heatsink required) |
Motherboard and chipset compatibility
Intel Xeon Gold 5418N needs a motherboard with a LGA 4677 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| W790 workstation | W790 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 4677.
LGA 4677 at a glance
| Type | LGA, 4,677 contacts |
|---|---|
| Package size | 77.5 × 56.5 mm |
| Introduced | 2023 |
| Memory | DDR5-4800 Registered DIMMs with ECC, 8 channels up to 4 TB on W-3500 and W-3400, 4 channels on W-2500 and W-2400 |
| Cooler mounting holes | Board specific (workstation heatsink) |
What the Xeon Gold 5418N is
The Xeon Gold 5418N is the 24-core network optimized Gold part of Sapphire Rapids server processors for LGA 4677 boards from the first quarter of 2023. Twenty-four Golden Cove cores with hyperthreading give 24 cores and 48 threads, with base at 1.8 GHz and up to 3.8 GHz turbo. The package carries 45 MB of Smart Cache. The 165 W envelope suits single and dual socket network servers with carrier lifecycle.
Balanced threads with large cache suit virtualized network functions that consolidate workloads per socket. Eight channels of DDR5 feed 24 cores for packet buffers. Eighty Gen5 lanes with Flex Bus and CXL serve high-speed NICs and accelerators across sockets. Speed Select profiles tune cores for clocks within the SKU.
Network buyers land here for 24 threads with carrier features at 165 W. Mixed functions plus management tasks fit well, while 32-core Gold parts suit denser hosts. Server boards need C741 class chipsets with the Gold SKU on the CPU list, not W790 workstation boards. The Socket vs chipset: what decides whether a CPU works guide covers server board choice.
Socket and motherboard compatibility
The 5418N fits LGA 4677 on single and dual socket server boards with LGA 4677 retention and server power delivery. Board lists must name the N suffix part for network qualification. W790 workstation boards target W-series chips instead.
Server chipset choice decides management and IO breadth rather than CPU fit.
Memory, PCIe and cooling
DDR5 to 4800 MT/s in 8 channels feeds 24 cores for network duty. Population with matched DIMMs holds rated speed.
Eighty Gen5 lanes with Flex Bus and CXL per CPU wire NICs, accelerators and NVMe. Cooling is a 165 W server heatsink with front-to-back airflow.
Upgrade paths
On LGA 4677 the upward moves are higher-core Gold parts where VM counts grow, or adding a second 5418N socket where boards allow 2P. Memory growth and NIC additions often help more than cores.
Outside network Gold, Silver parts on LGA 4677 trim cost for lighter loads.
Frequently asked questions
What socket does the Xeon Gold 5418N use?
LGA 4677 on single and dual socket server boards.
What does N mean on the 5418N?
A network optimized SKU with carrier features for virtualized network functions.
What memory does the 5418N need?
DDR5 to 4800 MT/s in 8 channels.
Can the 5418N run in dual socket?
Yes, on server boards with the N suffix part on the CPU list.
Sources and verification
Facts last checked against these sources on . Page last edited on .