Intel Xeon 6731P

Name: Intel Xeon 6731P
Brand: Intel
SKU: 1556

Manufacturer: Intel

The Intel Xeon 6731P is a server-class processor designed for demanding enterprise workloads, offering 32 cores and 64 threads running at a base clock of 2.5 GHz across all cores. Built on a 3 nm semiconductor process, it supports 64-bit computing and includes a broad set of instruction sets including AVX2, AES, and FMA3, making it well-suited for compute-intensive tasks that benefit from wide vector and cryptographic operations.

On the memory side, the Xeon 6731P supports DDR5 at speeds up to 6400 MHz across eight channels, with a maximum memory capacity of 4000 GB, ECC support, and a peak bandwidth of 409.6 GB/s. The cache hierarchy is substantial, with 3584 KB of L1, 64 MB of L2 at 2 MB per core, and a 144 MB L3 cache at 4.5 MB per core. The chip operates within a thermal envelope of 245W and has a maximum junction temperature of 102 °C, while PCIe 5 connectivity is available for high-throughput peripheral and storage configurations.

Pros

Eight memory channels combined with DDR5 support at up to 6400 MHz deliver a peak bandwidth of 409.6 GB/s, well-suited for memory-intensive server workloads
The 144 MB L3 cache and 64 MB L2 cache provide substantial on-chip storage to reduce latency for multi-threaded operations across 64 threads
ECC memory support helps maintain data integrity in environments where memory errors could cause critical failures
PCIe 5 connectivity enables high-throughput communication with compatible storage and networking components
A maximum memory capacity of 4000 GB allows the processor to support workloads that rely on very large in-memory datasets
The NX bit and AES instruction set support provide hardware-level security features relevant to enterprise deployments

Cons

A 245W TDP places significant demands on server cooling infrastructure, requiring robust thermal management solutions
The locked clock multiplier removes any ability to adjust operating frequency beyond the factory-defined settings
The absence of integrated graphics means a discrete or remote management solution is required for display output
With a turbo frequency of only 4.1 GHz across 32 cores, single-threaded peak speed is relatively modest for tasks that do not scale across many cores

Who is this for?

This processor is well-matched for enterprise server environments that run highly parallel, memory-intensive workloads such as large-scale databases, virtualization platforms, and in-memory analytics. With 64 threads, eight DDR5 memory channels, and support for up to 4000 GB of ECC RAM, it is particularly effective for organizations that require both compute density and data integrity at the infrastructure level. The inclusion of AES and AVX2 instruction sets also makes it a practical fit for security-sensitive or compute-heavy server applications such as encrypted data processing and scientific computing pipelines.

Who is this NOT for?

This processor is not a practical choice for desktop or workstation builds, as it lacks integrated graphics and operates at a 245W TDP that demands purpose-built server cooling infrastructure beyond what standard consumer or small-form-factor systems can provide. It is equally unsuitable for tasks that rely on strong single-threaded performance, since the turbo frequency tops out at 4.1 GHz with a locked multiplier, leaving no room to push clock speeds further for latency-sensitive or lightly threaded applications. Users working in compact or power-constrained environments would also find its thermal and power requirements difficult to accommodate.

General info:

Thermal Design Power (TDP)	245W
semiconductor size	3 nm
PCI Express (PCIe) version	5
Supports 64-bit	✓
CPU temperature	102 °C
Has integrated graphics	✕

The Intel Xeon 6731P is built on a 3 nm semiconductor process and operates within a Thermal Design Power of 245W, with a maximum CPU temperature of 102 °C. It supports 64-bit computing and connects to peripherals and storage through PCIe 5, the latest generation of the PCI Express interface. The processor does not include integrated graphics, which is typical for enterprise-grade server CPUs intended for dedicated compute roles.

Performance:

CPU speed	32 x 2.5 GHz
CPU threads	64 threads
turbo clock speed	4.1GHz
L3 cache	144 MB
L1 cache	3584 KB
L2 cache	64 MB
L2 core	2 MB/core
clock multiplier	25
Has an unlocked multiplier	✕
L3 core	4.5 MB/core
Turbo Boost version	2

The Intel Xeon 6731P runs 32 cores at a base clock of 2.5 GHz with 64 threads, and can reach a turbo clock speed of 4.1 GHz via Turbo Boost version 2. The clock multiplier is set at 25 and the multiplier is locked, meaning no manual frequency adjustments are possible. Cache resources are generous across all three levels: 3584 KB of L1, 64 MB of L2 at 2 MB per core, and a 144 MB L3 cache distributed at 4.5 MB per core, providing substantial fast-access memory to support the processor's 64-thread workload capacity.

Memory:

Supports ECC memory	✓
maximum memory bandwidth	409.6 GB/s
DDR memory version	5
RAM speed (max)	6400 MHz
maximum memory amount	4000GB
memory channels	8

The Intel Xeon 6731P supports DDR5 memory at speeds up to 6400 MHz across eight memory channels, enabling a peak bandwidth of 409.6 GB/s. It can address up to 4000 GB of total memory, making it suitable for workloads that require large in-memory datasets. ECC memory support is included, providing error-correcting capability to maintain data integrity in server environments.

Features:

uses multithreading	✓
instruction sets	MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit	✓

The Intel Xeon 6731P supports multithreading, allowing each physical core to handle two threads simultaneously for more efficient parallel processing. It implements the NX bit, a hardware-level security feature that helps prevent certain classes of malicious code execution. The processor also supports a wide range of instruction sets including AVX2, AES, FMA3, F16C, SSE 4.1, SSE 4.2, AVX, and MMX, covering vectorized math operations, hardware-accelerated encryption, and legacy multimedia instructions.

Benchmarks:

Final Verdict

The Intel Xeon 6731P is a purpose-built enterprise processor that delivers where it counts for large-scale server deployments — particularly in environments demanding high thread counts, substantial memory capacity, and reliable data integrity. Its eight-channel DDR5 memory architecture with up to 4000 GB capacity and 409.6 GB/s bandwidth stands out as a defining strength, making it well-positioned for workloads like virtualization, in-memory databases, and encrypted compute tasks. The thermal demands and locked multiplier do narrow its practical scope, but for organizations running purpose-built server infrastructure, the Xeon 6731P represents a coherent and well-specified solution for demanding parallel workloads.