Intel Xeon Silver 4416+ socket: LGA 4677
The Intel Xeon Silver 4416+ uses LGA 4677, the 4677-contact LGA socket for Sapphire Rapids server processors. The 20-core chip at 165 W needs a server board with DDR5 memory.
- Socket
- LGA 4677
- Launched
- January 2023
- Cores and threads
- 20 and 40
- Base power
- 165 W
- Codename
- Sapphire Rapids
- Segment
- Server
- Family
- Intel Xeon Silver
- Clocks
- 2.0 / 3.9 GHz
Intel Xeon Silver 4416+ specifications
| Cores | 20 |
|---|---|
| Threads | 40 |
| Core architecture | Golden Cove (Sapphire Rapids) |
| Clocks | 2.0 GHz base, up to 3.9 GHz turbo |
| Cache | 37.5 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 |
| UPI links | 2 at 16 GT/s |
| Multiplier | Locked |
| Package | LGA 4677 |
| Cooler in the box | None (server heatsink required) |
| Launch price | $1411.00 to $1421.00 Intel recommended customer price |
Motherboard and chipset compatibility
Intel Xeon Silver 4416+ 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 Silver 4416+ is
The Xeon Silver 4416+ is the 20-core mainstream of Sapphire Rapids server processors for LGA 4677 boards from the first quarter of 2023. Twenty Golden Cove cores with hyperthreading give 20 cores and 40 threads, with base at 2.0 GHz and up to 3.9 GHz turbo. The package carries 37.5 MB of Smart Cache. The 165 W envelope suits single and dual socket mainstream servers with dense virtualization.
High threads with large cache suit virtual machine hosts that pack guests per socket. Eight channels of DDR5 feed 20 cores for consolidated duty. Eighty Gen5 lanes with Flex Bus and CXL serve NICs and NVMe across one or two sockets.
Mainstream buyers land here for 40 threads at 165 W below Gold pricing. Dense VMs plus storage tasks fit well, while Gold parts add cache for larger fabrics. Server boards need C741 class chipsets with the Silver 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 4416+ fits LGA 4677 on single and dual socket server boards with LGA 4677 retention and server power delivery. Two UPI links at 16 GT/s enable dual socket pairing. W790 workstation boards target W-series chips instead.
Server chipset choice decides management and IO breadth rather than CPU fit. The plus suffix marks feature-inclusive SKUs in the Silver line.
Memory, PCIe and cooling
DDR5 to 4800 MT/s in 8 channels feeds 20 cores for virtualization 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 Gold parts where cache and threads grow, or adding a second 4416+ socket where boards allow 2P. Memory growth and NIC additions often help more than cores.
Outside mainstream Silver, Bronze parts on LGA 4677 trim cost for lighter loads.
Frequently asked questions
What socket does the Xeon Silver 4416+ use?
LGA 4677 on single and dual socket server boards.
What does + mean on the 4416+?
A feature-inclusive Silver SKU with the full 20-core layout and dual socket support.
What is the launch price of the 4416+?
$1411.00 to $1421.00 Intel recommended customer price.
Can the 4416+ run in dual socket?
Yes, UPI links enable dual socket pairing on server boards.
Sources and verification
Facts last checked against these sources on . Page last edited on .