Intel Xeon 6745P

Name: Intel Xeon 6745P
Brand: Intel
SKU: 9181

Manufacturer: Intel

The Intel Xeon 6745P is a server-grade processor designed for demanding enterprise workloads, sitting firmly in the enterprise CPU category. It operates across 32 cores with 64 threads via multithreading support, running at a base clock speed of 3.1 GHz per core and capable of reaching a turbo frequency of 4.3 GHz. Built on a 3nm semiconductor process, it carries a thermal design power rating of 300W and a maximum operating temperature of 97°C.

On the memory side, the Xeon 6745P supports eight-channel DDR5 ECC memory at speeds up to 6400 MHz, with a maximum capacity of 4000GB and a peak bandwidth of 409.6 GB/s. The processor connects via PCIe 5.0 with a bus transfer rate of 24 GT/s. Its 336 MB L3 cache — or roughly 10.5 MB per core — complements a broad instruction set that includes AVX2, FMA3, AES, and SSE 4.2, among others. The clock multiplier is fixed at 31 with no unlocked multiplier option, and the chip does not include integrated graphics.

Pros

Eight-channel DDR5 memory support with speeds up to 6400 MHz enables substantial throughput for data-intensive server workloads
A 336 MB L3 cache spread across 32 cores provides 10.5 MB per core, reducing memory latency for parallel tasks
ECC memory support adds hardware-level error correction, improving reliability in critical enterprise environments
PCIe 5.0 connectivity with a 24 GT/s bus transfer rate allows fast communication with high-speed storage and networking components
NX bit support provides hardware-enforced memory protection against certain types of code execution attacks
Multithreading delivers 64 threads across 32 cores, improving throughput for highly parallel workloads

Cons

A 300W TDP places significant demands on server cooling infrastructure and power delivery
No integrated graphics means an additional discrete component is required for any display output, adding system complexity
The clock multiplier is locked, removing any ability to adjust operating frequency beyond factory settings
With no unlocked multiplier and a fixed base clock, operational tuning flexibility is limited for specialized deployments

Who is this for?

This processor is well-matched for large-scale enterprise server deployments where memory capacity and throughput are critical — its eight-channel DDR5 support with up to 4000 GB capacity makes it a natural fit for in-memory databases, virtualization hosts, and analytics platforms that need to hold massive datasets close to the CPU. The combination of 64 threads, a broad instruction set including AVX2 and hardware AES acceleration, and PCIe 5.0 connectivity suits environments running highly parallel compute tasks, encrypted data pipelines, or high-throughput storage fabrics. ECC memory support and the NX bit also make it appropriate for mission-critical workloads where data integrity and security are non-negotiable.

Who is this NOT for?

This processor is not suited for desktop or workstation builds, as it lacks integrated graphics and carries a 300W TDP that demands enterprise-grade cooling and power infrastructure well beyond what standard consumer or small-office systems can provide. Its locked clock multiplier means it offers no flexibility for frequency tuning, making it a poor match for scenarios that rely on overclocking or manual performance customization. Additionally, single-threaded or lightly threaded applications would not take meaningful advantage of its 32-core architecture, and environments that do not require large memory capacity or ECC reliability would find its capabilities largely underutilized.

General info:

Thermal Design Power (TDP)	300W
semiconductor size	3 nm
PCI Express (PCIe) version	5
Supports 64-bit	✓
CPU temperature	97 °C
Has integrated graphics	✕

The Intel Xeon 6745P carries a Thermal Design Power (TDP) of 300W and is manufactured on a 3nm semiconductor process, reflecting its positioning as a high-performance server processor. It supports 64-bit computing and connects to the platform via PCIe 5.0, while maintaining a maximum operating temperature of 97°C. The processor does not include integrated graphics, making a discrete solution a requirement in any deployment.

Performance:

CPU speed	32 x 3.1 GHz
CPU threads	64 threads
turbo clock speed	4.3GHz
L3 cache	336 MB
clock multiplier	31
Has an unlocked multiplier	✕
L3 core	10.5 MB/core
Turbo Boost version	2

The processor runs 32 cores at a base speed of 3.1 GHz each, delivering 64 threads through multithreading, with a Turbo Boost 2.0 maximum frequency of 4.3 GHz for sustained peak workloads. It carries a substantial 336 MB of L3 cache, which breaks down to 10.5 MB per core, supporting fast data access across the full core count. The clock multiplier is set at 31 and is not unlocked, meaning frequency adjustments beyond the standard operating parameters are not supported.

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
bus transfer rate	24 GT/s

The Xeon 6745P uses DDR5 memory across eight channels, supporting speeds of up to 6400 MHz and a maximum capacity of 4000 GB, making it well-suited for memory-intensive server environments. Peak memory bandwidth reaches 409.6 GB/s, with a bus transfer rate of 24 GT/s facilitating data movement between the processor and system components. ECC memory support is included, providing error detection and correction capabilities that are essential for reliability in enterprise deployments.

Features:

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

The Xeon 6745P supports multithreading, allowing each physical core to handle two threads simultaneously for improved throughput under parallel workloads. It includes the NX bit for hardware-level memory protection, helping prevent certain classes of malicious code execution. The processor also covers a broad range of instruction sets — including AVX, AVX2, FMA3, AES, F16C, MMX, SSE 4.1, and SSE 4.2 — providing support for vectorized math, hardware-accelerated encryption, and a wide variety of compute-intensive operations.

Benchmarks:

Final Verdict

The Intel Xeon 6745P is a clearly defined enterprise processor built around large-scale parallel computing and memory-intensive server workloads. Its eight-channel DDR5 architecture supporting up to 4000 GB of ECC memory stands out as its most compelling attribute, directly addressing the demands of virtualization, in-memory analytics, and data-critical applications. While its 300W thermal footprint and locked clock multiplier place real constraints on deployment flexibility, these are characteristics inherent to its class and intended environment rather than oversights. For organizations running infrastructure that demands high thread counts, broad instruction set coverage, and uncompromising memory reliability, the Xeon 6745P is a purposeful and well-specified choice.