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Intel Xeon 6503P-B specifications and in-depth review

Intel Xeon 6503P-B

Manufacturer: Intel

The Intel Xeon 6503P-B is an enterprise-class processor designed for demanding workloads. With a base clock of 12 x 2 GHz and a turbo boost of 3.5 GHz, it offers a solid balance of power and efficiency. The processor features 24 threads, making it ideal for parallel processing tasks. It is built on a 5 nm semiconductor and has a Thermal Design Power (TDP) of 110W, ensuring stable performance under heavy load.

In terms of memory, the Xeon 6503P-B supports ECC memory and has a maximum memory bandwidth of 153.6 GB/s. It also supports DDR5 memory with speeds up to 4800 MHz, offering significant data transfer capabilities. The processor has 4 memory channels and a maximum memory capacity of 1130GB. Additionally, it is equipped with 48 MB of L3 cache and supports multithreading, with instruction sets like AVX2, AES, and SSE 4.2, making it highly capable for various enterprise applications.

Pros
  • Supports multithreading, enhancing performance for parallel tasks.
  • Has ECC memory support, ensuring higher data integrity and reliability.
  • Equipped with a large 48 MB L3 cache for efficient data handling in demanding applications.
  • Offers PCIe 5.0 for faster data transfer speeds with compatible hardware.
Cons
  • Does not include integrated graphics, requiring a separate GPU for visual output.
  • Has a fixed clock multiplier, meaning it cannot be overclocked for higher performance.
Who is this for?

The Intel Xeon 6503P-B is well-suited for enterprise environments that require high-performance processing. With 24 threads and ECC memory support, it excels in handling parallel workloads and ensuring data integrity in critical applications. Its PCIe 5.0 support makes it ideal for systems that demand fast data transfer speeds, such as server applications or high-performance computing tasks.

Who is this NOT for?

This processor may not be suitable for users needing integrated graphics, as it lacks integrated graphics, requiring a dedicated GPU for visual output. Additionally, its fixed clock multiplier means it cannot be overclocked, limiting flexibility for users who seek to push performance beyond the base clock speeds in tasks like gaming or extreme computing.

General info:

Thermal Design Power (TDP) 110W
release date February 2025
semiconductor size 5 nm
PCI Express (PCIe) version 5
Supports 64-bit ✓
CPU temperature 85 °C
Has integrated graphics ✕

The Intel Xeon 6503P-B features a Thermal Design Power (TDP) of 110W, ensuring efficient energy management for high-performance tasks. Built on a 5 nm semiconductor process, it benefits from modern manufacturing technology that enhances power efficiency and processing capabilities. This processor supports PCIe 5.0, offering fast data transfer speeds for compatible hardware, and is fully compatible with 64-bit computing. It operates at a maximum temperature of 85°C and does not include integrated graphics, making it suited for systems relying on dedicated GPUs.

Performance:

CPU speed 12 x 2 GHz
CPU threads 24 threads
turbo clock speed 3.5GHz
L3 cache 48 MB
L1 cache 1344 KB
L2 cache 24 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 6503P-B delivers strong performance with a base clock speed of 12 x 2 GHz and a turbo boost of up to 3.5 GHz. It features a total of 24 CPU threads, making it highly capable for multi-threaded tasks. With a substantial 48 MB of L3 cache and 24 MB of L2 cache, it provides efficient data handling for demanding applications, while each L3 core has 4 MB of cache for improved performance per core.

Memory:

Supports ECC memory ✓
maximum memory bandwidth 153.6 GB/s
DDR memory version 5
RAM speed (max) 4800 MHz
maximum memory amount 1130GB
memory channels 4

The Intel Xeon 6503P-B supports ECC memory for enhanced data integrity and reliability. It features a maximum memory bandwidth of 153.6 GB/s and supports DDR5 memory with speeds up to 4800 MHz. With 4 memory channels and a maximum memory capacity of 1130GB, it is well-equipped to handle large-scale workloads efficiently.

Features:

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

The Intel Xeon 6503P-B supports multithreading, enabling efficient execution of parallel tasks. It includes a comprehensive set of instruction sets such as MMX, AVX2, AES, and SSE 4.2, which enhance its capability for various advanced computing operations. Additionally, it features NX bit support, providing an added layer of security against certain types of malicious software.

Benchmarks:

Final Verdict

The Intel Xeon 6503P-B is a robust enterprise CPU that offers exceptional multi-threaded performance with its 24 threads and reliable ECC memory support, making it ideal for data-critical workloads in server and high-performance computing environments. While it lacks integrated graphics and overclocking capabilities, its PCIe 5.0 support and large cache sizes ensure smooth, efficient processing for demanding tasks. Overall, this processor is a strong choice for enterprises requiring stability and processing power in mission-critical applications.