Intel Xeon 6781P specifications and in-depth review

Intel Xeon 6781P

Manufacturer: Intel

The Intel Xeon 6781P is a high-performance enterprise CPU designed for demanding tasks. With a base clock of 80 x 2 GHz and a turbo boost of 3.8 GHz, it features a 350W TDP and is built on a 3 nm semiconductor process for efficient performance.

Supporting 160 threads and up to 4000GB of RAM, this CPU uses DDR5 memory and offers a maximum memory bandwidth of 512 GB/s. It also supports multithreading and ECC memory, and includes advanced instruction sets like AVX and AES for optimized processing power.

Pros
  • Supports ECC memory for enhanced data reliability and error correction.
  • Offers a high memory bandwidth of 512 GB/s for efficient data handling.
  • Equipped with multithreading to optimize performance across multiple tasks.
  • Includes advanced instruction sets such as AVX and AES for optimized processing power.
  • Built on a 3 nm semiconductor process, which helps in achieving better power efficiency.
Cons
  • Does not include integrated graphics, requiring a separate GPU for display output.
  • Lacks an unlocked multiplier, limiting overclocking potential.
  • Relatively high CPU temperature of 97°C, which could require enhanced cooling solutions.
Who is this for?

The Intel Xeon 6781P is ideal for high-performance enterprise applications, such as data processing, virtualization, and server workloads. Its support for ECC memory ensures data integrity, while its multithreading capability allows for efficient task management in multi-core environments. The processor's large cache sizes and high memory bandwidth make it well-suited for demanding computational tasks, making it an excellent choice for data centers and intensive server operations.

Who is this NOT for?

This CPU is not suitable for users looking for an integrated graphics solution, as it does not include integrated graphics. Additionally, its high operating temperature of 97°C and lack of an unlocked multiplier may be limiting for users who need overclocking capabilities or those looking for low-power, compact systems. It is also not designed for casual or light computing tasks, as its features are tailored for enterprise-level performance demands.

General info:

Thermal Design Power (TDP) 350W
release date February 2025
semiconductor size 3 nm
PCI Express (PCIe) version 5
Supports 64-bit
CPU temperature 97 °C
Has integrated graphics

The Intel Xeon 6781P features a 350W TDP and is built on a 3 nm semiconductor process, ensuring efficient power consumption and performance. It supports PCI Express 5.0 for high-speed data transfer, and operates at a CPU temperature of 97 °C. This processor also supports 64-bit processing but does not include integrated graphics.

Performance:

CPU speed 80 x 2 GHz
CPU threads 160 threads
turbo clock speed 3.8GHz
L3 cache 336 MB
L1 cache 8960 KB
L2 cache 160 MB
L2 core 2 MB/core
clock multiplier 20
Has an unlocked multiplier
L3 core 4.2 MB/core
Turbo Boost version 2

The Intel Xeon 6781P delivers robust performance with a base CPU speed of 80 x 2 GHz and a turbo boost of 3.8 GHz. It features 160 threads and substantial cache sizes, including 336 MB of L3 cache and 160 MB of L2 cache. The processor also includes a clock multiplier of 20, but lacks an unlocked multiplier for overclocking flexibility.

Memory:

Supports ECC memory
maximum memory bandwidth 512 GB/s
DDR memory version 5
RAM speed (max) 8000 MHz
maximum memory amount 4000GB
memory channels 8

The Intel Xeon 6781P offers impressive memory capabilities, supporting ECC memory for error correction and ensuring reliable performance. It features a maximum memory bandwidth of 512 GB/s, with support for DDR5 memory at speeds up to 8000 MHz. The processor can handle up to 4000GB of memory across 8 memory channels, enabling efficient data management for demanding applications.

Features:

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

The Intel Xeon 6781P leverages multithreading to enhance processing efficiency across its multiple cores. It supports a wide range of instruction sets, including MMX, FMA3, AVX, and AES, among others, to accelerate diverse workloads. Additionally, the processor features the NX bit for enhanced security by preventing the execution of code from non-executable memory regions.

Benchmarks:

Final Verdict

The Intel Xeon 6781P is a robust enterprise CPU tailored for high-demand workloads in data centers and computational tasks. Its support for ECC memory and impressive multithreading capabilities make it well-suited for applications requiring reliability and parallel processing. With a high memory bandwidth and large cache sizes, this processor excels in environments where performance and data integrity are paramount. However, its lack of integrated graphics and overclocking capabilities, along with its high operating temperature, may limit its appeal for non-enterprise users or those with specific needs for graphics or customization. Overall, this processor is a strong choice for enterprise-level tasks that demand raw processing power and efficiency.

Popular Comparisons

Intel Xeon 6781P
Intel Xeon 6781P
VS
Intel Xeon 6516P-B
Intel Xeon 6516P-B