Quick Verdict
A highly integrated, core-dense Xeon SoC aimed squarely at single-socket edge and telecom platforms, where its mix of 64 P-cores, DDR5-6400 bandwidth, and built-in accelerators can replace multiple discrete components and simplify platforms.
Overview
Launch
2025
Status
LaunchedGeneration
6th Gen Xeon (Granite Rapids-D)
Market
Server / Edge / Telecom
The Intel Xeon 6766P-B is a 64-core, 128-thread server SoC from the Granite Rapids-D family, designed for single-socket networking, edge, and vRAN platforms with eight-channel DDR5-6400, integrated accelerators, and 48 PCIe 5.0/4.0 lanes in a 305 W BGA package.
Intel’s Xeon 6766P-B sits in the Granite Rapids-D Xeon 6 SoC family, offering 64 Redwood Cove P-cores and 128 threads in a single-socket BGA5026 package. It supports 2.25 TB of eight-channel DDR5-6400 memory and 48 PCIe lanes split between Gen5 and Gen4, with integrated vRAN Boost, QuickAssist, DLB and DSA accelerators on top of AMX and AVX-512 for AI and media workloads.
Its 305 W TDP and lack of multiplier unlock make it best suited for fixed-function, thermally constrained edge and networking appliances rather than general-purpose data center servers.
Specifications
Performance
No standardized desktop or workstation benchmarks are available; performance is optimized for server and networking workloads, not general office productivity.
With 64 P-cores and 128 threads, eight-channel DDR5, and Intel VT-x/VT-d plus large memory capacity, the 6766P-B is well-suited for running numerous VMs or containers in edge or NFV deployments.
Not applicable; this is a server SoC without integrated graphics and is not intended or validated for gaming use cases.
At 305 W TDP for a 64-core SoC with integrated accelerators, it is competitive on performance-per-watt for its class, but still requires robust cooling and careful power budgeting in dense edge platforms.
- •No integrated graphics and no official validation for gaming workloads.
- •Not designed or marketed for gaming; use cases are server, networking, and edge.
- •Any gaming use would be dependent on discrete GPU and is not a target scenario.
- •AMX and AVX-512 with FP16 provide strong CPU-based inference for edge AI models.
- •No integrated GPU or dedicated AI accelerator beyond the CPU matrix engine.
- •Best suited for inference and smaller batch workloads at the edge rather than large-scale training.
Architecture
Intel 3 (7 nm equivalent class) – not officially listed on consumer ARK, but Granite Rapids compute tile is documented as Intel 3
Process Node
Granite Rapids-D
Codename
64C / 128T
Core Config
256 MB
L3 Cache
305 W
TDP
Architecture Overview
Granite Rapids-D is Intel’s 6th-generation Xeon SoC platform, focusing on single-socket networking and edge use cases with integrated accelerators and high I/O integration.
CPU Design
The 6766P-B uses Redwood Cove P-cores organized in a multi-tile compute complex with up to 64 active cores and 128 threads via Intel Hyper-Threading. The compute tile is manufactured on Intel’s Intel 3 process, an evolution of the Intel 4 node used in earlier generations, offering improved density and efficiency.
Memory Subsystem
An integrated eight-channel DDR5 memory controller supports DDR5-6400 with ECC, providing high bandwidth for data-plane workloads and up to 2.25 TB per socket. The memory subsystem is tightly coupled with the cache hierarchy and accelerators to feed the large core count.
PCIe & I/O
The SoC exposes 48 PCIe lanes, configurable as 32 Gen5 and 16 Gen4, directly from the package. This allows direct attachment of high-speed NICs, FPGAs, and NVMe storage without a separate chipset, reducing latency and board complexity.
Overclocking
The multiplier is locked, and the BGA5026 package is soldered to the board, so overclocking is not supported. The design prioritizes stable, predictable operation in fixed-function appliances rather than enthusiast-style tuning.
- Move from Ice Lake-D to Granite Rapids-D with Redwood Cove P-cores and Intel 3 process.
- Significant increase in core count (up to 64 vs 20) and memory channels (8 vs 4).
- Integrated vRAN Boost, QAT, DLB, DSA and AMX accelerators on-die.
- PCIe 5.0 support and higher DDR5 speeds (6400 vs 3200 MT/s).
Key Highlights
- 64 P-cores and 128 threads in a single-socket SoC.
- Eight-channel DDR5-6400 with up to 2.25 TB capacity.
- 48 PCIe lanes with Gen5/Gen4 for NICs, storage, and accelerators.
- Integrated vRAN Boost, QAT, DLB, and DSA reduce need for discrete cards.
- AMX and AVX-512 with FP16 accelerate edge AI and media workloads.
- BGA5026 package reduces board complexity and component count.
- 305 W TDP demands robust cooling and power delivery.
- Locked multiplier and BGA package eliminate overclocking and easy upgrades.
- Single-socket only; no multi-socket scalability.
- Per-core frequency is lower than high-frequency Xeon Gold/Platinum or EPYC alternatives.
- Not intended for client or gaming workloads; no integrated GPU.
History
The Xeon 6766P-B emerges from Intel’s effort to unify its data center and edge product lines under the Xeon 6 brand, with Granite Rapids-D representing the single-socket SoC track focused on networking and telco. Where earlier Xeon D families like Ice Lake-D provided modest core counts and four-channel memory, Granite Rapids-D jumps to 64 P-cores and eight DDR5 channels, reflecting the growing need for core density and bandwidth at the far edge. Intel’s Xeon 6 SoC strategy, formerly codenamed Granite Rapids-D, is specifically aimed at consolidating 5G vRAN and UPF workloads that previously relied on multiple discrete appliances or older Xeon-D platforms.
</br></br>By integrating vRAN Boost, QAT, DLB, and DSA accelerators alongside AMX and AVX-512, the 6766P-B is designed to replace both a host CPU and several PCIe accelerator cards in compact edge servers, simplifying designs and reducing power and board space. Its BGA5026 package and locked multiplier emphasize fixed-function, long-life deployments over the flexibility and upgradeability of socketed Xeon Scalable processors.
Improvements over Previous Generation
- Move from Ice Lake-D to Granite Rapids-D with Redwood Cove P-cores and Intel 3 process.
- Significant increase in core count (up to 64 vs 20) and memory channels (8 vs 4).
- Integrated vRAN Boost, QAT, DLB, DSA and AMX accelerators on-die.
- PCIe 5.0 support and higher DDR5 speeds (6400 vs 3200 MT/s).
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Single-socket 5G vRAN, UPF, or edge security appliances where core density, integrated accelerators, and DDR5 bandwidth matter more than peak per-core frequency.
Avoid if…
- You need dual-socket scalability for large VM farms.
- You require very high per-core frequency for latency-sensitive trading or HPC codes.
- You want a general-purpose server with flexible socket upgrades.
- You lack the thermal and power infrastructure to support a 305 W SoC in a compact chassis.
Use Cases
Interesting Facts
The 6766P-B is part of Intel’s Xeon 6 SoC family formerly codenamed Granite Rapids-D, which integrates 5G vRAN and networking accelerators directly onto the server SoC.
Granite Rapids-D uses Redwood Cove P-cores built on Intel’s Intel 3 process, the same node used for the compute tile in larger Granite Rapids-SP Xeons.
Unlike socketed Xeon Scalable CPUs, the 6766P-B uses a BGA5026 package that is soldered to the board, emphasizing compact, fixed-function designs.
Intel positions Xeon 6 SoC as a key enabler for consolidated vRAN and UPF at the far edge, replacing multiple discrete appliances with a single-chip solution.
All Granite Rapids-D -B SKUs share the same 3.5 GHz max turbo, but differ in core count, cache size, and TDP; the 6766P-B sits in the middle with 64 cores and 256 MB cache.
The SoC integrates both Intel QuickAssist Technology (QAT) and Intel Dynamic Load Balancer (DLB), which are particularly useful for crypto and network load balancing in telco edge nodes.
AMX on Granite Rapids-D adds matrix operations for AI inference, enabling FP16 and INT8 acceleration without a discrete GPU.
The 6766P-B supports Intel Total Memory Encryption (TME) and TME-MK, providing hardware-based memory encryption for edge deployments handling sensitive data.
With eight DDR5 channels, the 6766P-B can deliver significantly more memory bandwidth than older four-channel Xeon-D designs, benefiting packet processing and analytics.
Despite its 64 cores, the 6766P-B’s 3.5 GHz all-core turbo is relatively modest compared to high-frequency Xeon Gold/Platinum models, reflecting its emphasis on throughput and integration rather than single-thread performance.
People Also Ask
What is the Intel Xeon 6766P-B used for?
It is designed for single-socket servers in 5G vRAN, UPF, edge security, and other networking workloads where high core density, integrated accelerators, and DDR5 bandwidth are important.
How many cores does the Xeon 6766P-B have?
It has 64 physical cores and supports 128 threads with Intel Hyper-Threading.
What memory does the Xeon 6766P-B support?
It supports eight-channel DDR5 memory at up to 6400 MT/s, with a maximum capacity of 2.25 TB depending on memory type and configuration.
What socket does the Xeon 6766P-B use?
It uses the FCBGA5026 socket, which is a BGA package soldered directly to the board.
Is the Xeon 6766P-B unlocked for overclocking?
No, it has a locked multiplier and is not designed for overclocking; it is optimized for stable, long-life operation in edge and networking appliances.
Does the Xeon 6766P-B have integrated graphics?
No, it does not include integrated graphics and is not intended for display or gaming workloads.
What accelerators are integrated into the Xeon 6766P-B?
It includes Intel vRAN Boost, Intel QuickAssist Technology (QAT), Intel Dynamic Load Balancer (DLB), Intel Data Streaming Accelerator (DSA), and Intel AMX for AI workloads.
How many PCIe lanes does the Xeon 6766P-B have?
It provides 48 PCIe lanes, configurable as 32 Gen5 and 16 Gen4 from the SoC.
What process node is the Xeon 6766P-B built on?
Intel’s public ARK does not list lithography for this SKU, but Granite Rapids compute tiles are documented as Intel 3; third-party databases commonly list similar Granite Rapids-D parts as 5 nm class.
Is the Xeon 6766P-B suitable for gaming?
No; it is a server SoC without integrated graphics and is not validated for gaming. Any gaming use would require a discrete GPU and is outside its intended market.
Frequently Asked Questions
Can the Xeon 6766P-B be used in a dual-socket server?
No, it is a 1S-only part and does not support multi-socket coherency (UPI links are listed as 0).
What is the TDP of the Xeon 6766P-B?
Intel specifies a TDP of 305 W for this processor.
Does the Xeon 6766P-B support ECC memory?
Yes, it supports ECC DDR5 memory as part of its server feature set.
What instruction set extensions does the Xeon 6766P-B support?
It supports Intel SSE4.2, AVX, AVX2, AVX-512, and AMX, including AVX-512 FP16 and AMX FP16 for AI acceleration.
Is the Xeon 6766P-B a socketed CPU?
No, it uses a BGA5026 package that is soldered to the board, so it cannot be upgraded or replaced separately like an LGA processor.
What is the maximum turbo frequency of the Xeon 6766P-B?
The maximum turbo frequency is 3.5 GHz, with an all-core turbo of 2.9 GHz as specified by Intel.
Does the Xeon 6766P-B support Intel Optane persistent memory?
No, Intel lists Intel Optane persistent memory support as “No” for this SKU.
What security features does the Xeon 6766P-B include?
It supports Intel SGX, TDX, Total Memory Encryption (TME and TME-MK), AES-NI, and Boot Guard among other security and reliability features.
Can I use the Xeon 6766P-B in a desktop motherboard?
No, it requires a dedicated server or edge platform with the BGA5026 socket and appropriate power and cooling; it is not compatible with consumer desktop boards.
What is the difference between Xeon 6766P-B and Xeon 6776P-B?
The 6776P-B has 72 cores and 288 MB of L3 cache with a 325 W TDP, while the 6766P-B has 64 cores and 256 MB of cache with a 305 W TDP; both are Granite Rapids-D SoCs with the same max turbo and I/O capabilities.