| Product SKU | 6556P-B |
|---|---|
| Product Collection | Intel® Xeon® 6 processors |
| Code Name | Products formerly Granite Rapids-D |
| Vertical Segment | Server |
| 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 |
| Intel Deep Learning Boost (Intel DL Boost) on CPU | Yes |
| Marketing Status | Launched |
| Launch Date | Q1'25 |
| Servicing Status | Baseline Servicing |
| Embedded Options Available | Yes |
| Use Conditions | Communications Extended Temp |
| Max Memory Size (dependent on memory type) | 1.13 TB |
| Memory Types | DDR5 |
| Maximum Memory Speed | 6400 MT/s |
| Max # of Memory Channels | 4 |
| Intel Optane Persistent Memory Supported | No |
| ECC Memory Supported | Yes |
| Scalability | 1S Only |
| PCI Express Revision | Gen 4, Gen 5 |
| PCI Express Configurations | 32 Lanes Gen 5; 16 Lanes Gen 4 |
| Max # of PCI Express Lanes | 48 |
| Integrated LAN | yes |
| Sockets Supported | FCBGA4368 |
| T CASE | 85 CASE "> |
| Package Size | 77.5mm x 50mm |
| Intel vRAN Boost | Yes |
| Intel QuickAssist Technology (QAT) | 1 default devices |
| Intel Dynamic Load Balancer (DLB) | 1 default devices |
| Intel Data Streaming Accelerator (DSA) | 1 default devices |
| Intel Advanced Matrix Extensions (AMX) | Yes |
| Intel Speed Select Technology – Core Power | No |
| Intel Speed Select Technology – Turbo Frequency | No |
| Intel Speed Select Technology - Performance Profile | No |
| Intel Speed Select Technology - Base Frequency | No |
| Intel Resource Director Technology (Intel RDT) | Yes |
| Intel Optane Memory Supported | No |
| Intel Speed Shift Technology | No |
| Intel Turbo Boost Technology | 2.0 |
| Intel Hyper-Threading Technology | Yes |
| Intel 64 | Yes |
| Instruction Set | 64-bit |
| Instruction Set Extensions | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| # of AVX-512 FMA Units | 2 |
| Enhanced Intel SpeedStep Technology | No |
| Integrated Intel QuickAssist Technology | Yes |
| Intel Volume Management Device (VMD) | Yes |
| Intel Trust Domain Extensions (Intel TDX) | Yes |
| Intel QuickAssist Software Acceleration | Yes |
| Intel Total Memory Encryption - Multi Key | Yes |
| Intel Total Memory Encryption | Yes |
| Intel AES New Instructions | Yes |
| Intel Software Guard Extensions (Intel SGX) | Yes with Intel® SPS |
| Intel Trusted Execution Technology | Yes |
| Execute Disable Bit | Yes |
| Intel Boot Guard | Yes |
| Mode-based Execute Control (MBEC) | Yes |
| Intel Platform Firmware Resilience Support | Yes |
| Default Maximum Enclave Page Cache (EPC) Size for Intel SGX | 512 GB |
| Intel Crypto Acceleration | Yes |
| Intel Virtualization Technology (VT-x) | Yes |
| Intel Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel VT-x with Extended Page Tables (EPT) | Yes |
CPU, Intel Xeon
Intel Xeon 6556P-B Processor
The Intel Xeon 6556P-B Processor is a 36-core, 72-thread server CPU from the Intel Xeon 6 processor family (Granite Rapids-D), with 144 MB cache, 4-channel memory, PCIe Gen 4, Gen 5 and a 215 W TDP.
Overview
The Intel Xeon 6556P-B processor is a Intel® Xeon® 6 processors server CPU (Products formerly Granite Rapids-D) with 36 cores / 72 threads, a 2.3 GHz base frequency and up to 3.5 GHz max turbo, 144 MB of cache and a 215 W TDP. It uses the FCBGA4368 socket, 4 memory channels and PCI Express Gen 4, Gen 5.
At a glance
- Cores / threads: 36 cores / 72 threads
- Frequency: 2.3 GHz base / 3.5 GHz max turbo
- Cache: 144 MB
- TDP: 215 W
- Memory: DDR5; 4 channels; up to 1.13 TB; ECC Yes
- PCI Express: Gen 4, Gen 5, 48 lanes
- Socket: FCBGA4368; scalability 1S Only
- Launch: Q1’25
- Notable features: Intel AMX, Intel TDX, Intel SGX, Intel QAT (1 default devices)
When to choose the 6556P-B
In Intel’s line-up this processor sits in a server processor. With 36 cores on the FCBGA4368 platform it suits dense virtualisation, databases and high-throughput compute, and its 215 W TDP sets the cooling and power budget for the node.
Platform & compatibility
The Intel Xeon 6556P-B uses the FCBGA4368 socket on 1S Only platforms, supports DDR5, with up to 4 memory channels, and up to 1.13 TB of memory, provides PCI Express Gen 4, Gen 5 (48 lanes). Confirm the exact OEM platform, BIOS level and memory population for your workload before ordering.
Deployment notes
The 6556P-B installs in a FCBGA4368 platform with up to 4 memory channels and up to 1.13 TB of memory. Intel AMX accelerates INT8 and BF16 AI inference directly on the CPU. Intel TDX adds hardware-isolated confidential-computing virtual machines. Intel SGX provides application enclaves. Intel QuickAssist (QAT) offloads compression and cryptography (1 default devices). It is launched as part of Intel® Xeon® 6 processors and is intended for dense virtualisation, databases and high-throughput compute.
FAQ
How many cores does it have? 36 cores and 72 threads.
What socket does it use? FCBGA4368, in 1S Only systems.
What memory does it support? DDR5.
Does it support ECC memory? Yes.
Related
Configuration, availability and lead time depend on the required quantity, server pairing and delivery destination. Send your requirement to receive a quotation.
