Intel® Xeon® 6556P-B Processor

Model code

Intel® Xeon® 6556P-B Processor

Identifier scope

Official model designation, not a verified ordering part number. Region, revision and bundle require separate confirmation.

Manufacturer model

Intel® Xeon® 6556P-B Processor

Product Collection

Intel® Xeon® 6 processors

Code Name

Products formerly Granite Rapids-D

Vertical Segment

Server

Processor Number

6556P-B

Lithography

Intel 3

Total Cores

36

# of Performance-cores

36

Total Threads

72

Max Turbo Frequency

3.5 GHz

Processor Base Frequency

2.3 GHz

Cache

144 MB

TDP

215 W

Launch Date

Q1'25

Max Memory Size (dependent on memory type)

1.13 TB

Memory Types

DDR5

Maximum Memory Speed

6400 MT/s

Max # of Memory Channels

4

ECC Memory Supported ‡

Yes

Scalability

1S Only

PCI Express Revision

Gen 4, Gen 5

Max # of PCI Express Lanes

48

Sockets Supported

FCBGA4368

Package Size

77.5mm x 50mm

Documented selection limits

Model only; boxed/tray ordering variant and included cooler are not established. Confirm exact motherboard/server CPU support list, socket, firmware/BIOS, memory type and topology, VRM and CPU cooling limits. CPU TDP is a thermal specification, not a system PSU recommendation; Intel Processor Base Power and Maximum Turbo Power remain separate ratings, not AMD Default TDP. Memory limits, channels, ECC, PCIe lanes and clock rates describe processor support, not installed hardware. Maximum turbo/boost frequency is conditional, not a sustained all-core guarantee. Do not interchange generations merely because socket names match.

Specification source: Intel ↗
Checked against documentation: 17.10.2026