Intel Xeon Gold 6434 socket: LGA 4677
The Intel Xeon Gold 6434 uses LGA 4677, the 4677-contact LGA socket for Sapphire Rapids server processors. The 8-core chip at 195 W needs a server board with DDR5 memory.
- Socket
- LGA 4677
- Launched
- January 2023
- Cores and threads
- 8 and 16
- Base power
- 195 W
- Codename
- Sapphire Rapids
- Segment
- Server
- Family
- Intel Xeon Gold
- Clocks
- 3.7 / 4.1 GHz
Intel Xeon Gold 6434 specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Golden Cove (Sapphire Rapids) |
| Clocks | 3.7 GHz base, up to 4.1 GHz turbo |
| Cache | 22.5 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 195 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 | 3 at 16 GT/s |
| Multiplier | Locked |
| Package | LGA 4677 |
| Cooler in the box | None (server heatsink required) |
| Launch price | $2607.00 Intel recommended customer price |
Motherboard and chipset compatibility
Intel Xeon Gold 6434 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 6434 is
The Xeon Gold 6434 is the 8-core high-clock member of Sapphire Rapids server processors for LGA 4677 boards from the first quarter of 2023. Eight Golden Cove cores with hyperthreading give 8 cores and 16 threads, with base at 3.7 GHz and up to 4.1 GHz turbo. The package carries 22.5 MB of Smart Cache. The 195 W envelope suits single and dual socket servers where per-core speed matters most.
High base clock with 4.1 GHz turbo leads Gold per-core speed for latency-sensitive databases and financial services. Eight channels of DDR5 feed 8 cores for in-memory work. Eighty Gen5 lanes with Flex Bus and CXL serve NICs and NVMe across sockets.
Latency-sensitive buyers land here for peak Gold clocks at 195 W. Eight fast threads cover transactional workloads, while 16-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 6434 fits LGA 4677 on single and dual socket server boards with LGA 4677 retention and server power delivery. Three 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.
Memory, PCIe and cooling
DDR5 to 4800 MT/s in 8 channels feeds 8 fast cores for transactional 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 195 W server heatsink with front-to-back airflow.
Upgrade paths
On LGA 4677 the upward moves are higher-core Gold parts where thread counts grow, or adding a second 6434 socket where boards allow 2P. Memory growth and NIC additions often help more than clocks.
Outside high-clock Gold, Silver parts on LGA 4677 trim cost for lighter loads.
Frequently asked questions
What socket does the Xeon Gold 6434 use?
LGA 4677 on single and dual socket server boards.
How is 6434 different from 6434H?
Same 8-core clocks and cache; the H suffix marks a higher thermal envelope variant for hot aisles.
What is the launch price of the 6434?
$2607.00 Intel recommended customer price.
Can the 6434 run in dual socket?
Yes, three UPI links at 16 GT/s enable dual socket pairing.
Sources and verification
Facts last checked against these sources on . Page last edited on .