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Intel Xeon 6543P-B specifications and in-depth review

Intel Xeon 6543P-B

Manufacturer: Intel

The Intel Xeon 6543P-B is an Enterprise CPU designed for high-performance computing environments. It offers a base clock speed of 32 x 2 GHz, with a turbo clock speed of 3.3GHz, making it a robust choice for demanding workloads. The CPU features a 160W thermal design power (TDP) and supports up to 1130GB of memory, ensuring stability and efficiency in enterprise systems.

This processor supports advanced technologies such as ECC memory and multithreading, allowing for enhanced data integrity and parallel processing. With 64 threads and a large 128MB L3 cache, it is well-suited for multi-tasking and intensive applications. Additionally, the Xeon 6543P-B is built on a 3nm semiconductor and offers PCIe 5.0 for high-speed data transfer.

Pros
  • Supports up to 1130GB of memory, which is suitable for extremely high-demand applications.
  • Uses multithreading, improving performance for parallel tasks and workloads.
  • Supports ECC memory, ensuring data integrity and reliability for mission-critical environments.
  • Has a high maximum RAM speed of 5600 MHz, providing fast memory access.
  • PCIe 5.0 support allows for high-speed data transfer with compatible devices.
Cons
  • Lacks integrated graphics, requiring a discrete GPU for visual processing.
  • Does not have an unlocked multiplier, limiting overclocking potential.
  • The 160W TDP indicates high power consumption, which may require effective cooling solutions in certain environments.
Who is this for?

This product is ideal for enterprise environments and high-performance computing tasks where reliability and memory capacity are essential. With support for ECC memory and a maximum memory size of 1130GB, it excels in mission-critical applications that require data integrity and substantial memory bandwidth. Additionally, its support for multithreading and PCIe 5.0 makes it well-suited for handling complex parallel workloads and fast data transfer, such as in data centers, scientific computing, or server farms.

Who is this NOT for?

This product may not be the best choice for users who require integrated graphics, as it lacks this feature, making it unsuitable for tasks like light gaming or simple multimedia processing without a discrete GPU. Additionally, its 160W TDP suggests that it may not be ideal for energy-conscious users or environments where power efficiency is critical. Furthermore, the absence of an unlocked multiplier means it may not be suitable for users interested in manual overclocking for performance tuning.

General info:

Thermal Design Power (TDP) 160W
release date February 2025
semiconductor size 3 nm
PCI Express (PCIe) version 5
Supports 64-bit ✓
CPU temperature 85 °C
Has integrated graphics ✕

The Intel Xeon 6543P-B features a 160W thermal design power (TDP), indicating its power consumption and heat dissipation requirements. Built on a 3 nm semiconductor process, it offers improved efficiency and performance. The processor supports PCIe 5.0, ensuring fast data transfer speeds, but lacks integrated graphics. It also supports 64-bit processing and operates at a CPU temperature of 85°C, providing solid thermal management.

Performance:

CPU speed 32 x 2 GHz
CPU threads 64 threads
turbo clock speed 3.3GHz
L3 cache 128 MB
L1 cache 3584 KB
L2 cache 64 MB
L2 core 2 MB/core
clock multiplier 20
Has an unlocked multiplier ✕
L3 core 4 MB/core
Turbo Boost version 2

The Intel Xeon 6543P-B processor delivers a total clock speed of 32 x 2 GHz and supports 64 threads, making it well-suited for multitasking and demanding applications. It features a 128 MB L3 cache, with additional L1 and L2 caches of 3584 KB and 64 MB, respectively, helping to improve data access speeds. The processor also includes Turbo Boost 2.0, allowing it to reach a turbo clock speed of 3.3GHz for performance peaks when needed, though it lacks an unlocked multiplier for manual overclocking.

Memory:

Supports ECC memory ✓
DDR memory version 5
RAM speed (max) 5600 MHz
maximum memory amount 1130GB
memory channels 4

The Intel Xeon 6543P-B supports ECC memory, ensuring greater data integrity for mission-critical applications. It is compatible with DDR5 memory, offering a maximum RAM speed of 5600 MHz. The processor can support up to 1130GB of memory, distributed across 4 memory channels, providing significant memory bandwidth for heavy workloads.

Features:

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

The Intel Xeon 6543P-B utilizes multithreading to enhance parallel processing and improve overall performance in multitasking environments. It supports a wide range of instruction sets, including MMX, AES, AVX, and SSE 4.1/4.2, providing versatile capabilities for various computational tasks. Additionally, it features the NX bit for improved security by preventing the execution of malicious code in certain areas of memory.

Benchmarks:

Final Verdict

The Intel Xeon 6543P-B is a high-performance Enterprise CPU that excels in demanding, data-intensive environments. With impressive features like support for ECC memory and up to 1130GB of maximum memory, it is well-suited for applications requiring high reliability and extensive memory capacity. Its multithreading capabilities and support for PCIe 5.0 further enhance its appeal for multi-tasking and data-heavy workloads. However, its lack of integrated graphics and high TDP may limit its suitability for power-conscious or graphics-intensive tasks. Overall, the Xeon 6543P-B is a strong choice for enterprises and servers focused on stability, processing power, and large-scale memory management.