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Intel Xeon Silver 4208 server CPU in LGA 3647 package with gold contacts and green substrate

Intel

Intel Xeon Silver 4208 8-Core 2.1 GHz LGA 3647 85W BX806954208 Server Processor

SKU CH-YJFG-Y06F5 MPN BX806954208

Eight-core server processor with sixteen threads, 2.1 GHz base and 3.2 GHz turbo, 11 MB L3 cache, DDR4-2400 six-channel support up to 1 TB, 85 W TDP, LGA 3647 socket

  • NameXeon Silver 4208
  • CPU Socket TypeLGA 3647
  • Core NameCascade Lake
  • # of Cores8-Core
  • # of Threads16
  • Operating Frequency2.1 GHz

Option Silver 4208

Struck-through versions exist but are not stocked here.

  • 8 cores and 16 threads handle parallel workloads
  • 1 GHz base clock with 3.2 GHz turbo boost
  • 11 MB L3 cache reduces memory latency
  • 6-channel DDR4 2400 controller supports up to 1 TB
  • 85 W TDP balances performance and power efficiency

Xeon Silver 4208 server processor

The Intel Xeon Silver 4208 is an 8-core, 16-thread CPU built for entry-level data centre compute, network and storage workloads. It operates at a 2.1 GHz base frequency with a 3.2 GHz maximum turbo frequency. The processor fits the LGA 3647 socket and has an 85W thermal design power. It targets IT teams deploying dual-socket servers for virtualisation or general-purpose applications.

14 nm Cascade Lake build with six-channel DDR4

Manufactured on a 14 nm Cascade Lake process, the chip includes 11MB of L3 cache and an integrated memory controller supporting DDR4 2400 across six channels. Maximum memory capacity reaches 1TB per socket. PCI Express 3.0 lanes handle I/O expansion for storage controllers or network adapters. The LGA 3647 package requires a compatible server motherboard and appropriate cooling solution.

Boxed processor with virtualisation

The BX806954208 boxed unit includes the processor only; a heatsink is not supplied. Intel Virtualization Technology and Intel Hyper-Threading are supported for consolidated workloads. Scalability is rated for two-socket configurations, allowing paired deployment in compatible chassis. Buyers needing single-socket only or higher core counts should evaluate other Xeon tiers.

Highlights

  • 8 cores and 16 threads handle parallel workloads
  • 1 GHz base clock with 3.2 GHz turbo boost
  • 11 MB L3 cache reduces memory latency
  • 6-channel DDR4 2400 controller supports up to 1 TB
  • 85 W TDP balances performance and power efficiency

Specifications

BrandIntel
SeriesIntel Xeon Silver
NameXeon Silver 4208
ModelBX806954208
CPU Socket TypeLGA 3647
Core NameCascade Lake
# of Cores8-Core
# of Threads16
Operating Frequency2.1 GHz
Max Turbo Frequency3.2 GHz
L3 Cache11MB
64-Bit SupportYes
Hyper-Threading SupportYes
Manufacturing Tech14 nm
Integrated Memory Controller SpeedDDR4 2400
Maximum Memory Capacity1TB
Memory Channel6 Channel
Virtualization Technology SupportYes
Scalability2S
PCI Express Revision3.0
Max # of PCI Express Lanes48
Thermal Design Power85W
Cooling DeviceCooling device not included - Processor Only
Shipping weight0.20 kg
Package size137 × 112 × 46 mm

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the PCI Express 3.0 interface cap total lane bandwidth for add-in cards?

The processor provides PCI Express 3.0 lanes; total bandwidth depends on the motherboard implementation and the number of lanes allocated to each slot.

What cooler clearance and mounting holes does the LGA 3647 socket require?

LGA 3647 uses a narrow ILM with a specific screw pattern; the cooler must be rated for that socket and the 85 W TDP.

How is the processor seated in the LGA 3647 socket, and what step is often missed?

Align the two notches on the CPU with the socket keys, lower it vertically, then secure the load-plate lever before tightening the ILM screws in the prescribed sequence.

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