INTEL

Intel Xeon X5550

Intel processor specifications and benchmark scores

4
Cores
8
Threads
3.07
GHz Boost
95W
TDP
🛡️ECC Memory

Intel Xeon X5550 Specifications

⚙️

Xeon X5550 Core Configuration

Processing cores and threading

The Intel Xeon X5550 features 4 physical cores and 8 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
4
Threads
8
SMP CPUs
2
⏱️

X5550 Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Xeon X5550 benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Xeon X5550 by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
2.67 GHz
Boost Clock
3.07 GHz
Multiplier
20x
đź’ľ

Intel's Xeon X5550 Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the X5550 processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Xeon X5550's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
64 KB (per core)
L2 Cache
256 KB (per core)
L3 Cache
8 MB (shared)
🏗️

Nehalem Architecture & Process

Manufacturing and design details

The Intel Xeon X5550 is built on Intel's 45 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in X5550 incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Nehalem
Codename
Gainestown
Process Node
45 nm
Foundry
Intel
Transistors
731 million
Die Size
263 mm²
Generation
Xeon (Gainestown)
🔢

Nehalem Instruction Set Features

Supported CPU instructions and extensions

The Xeon X5550 by Intel supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSSE3
SSE4.1
SSE4.2
Intel 64
VT-x
VT-d
🔌

X5550 Power & Thermal

TDP and power specifications

The Intel Xeon X5550 has a TDP (Thermal Design Power) of 95W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
95W
đź”§

Intel Socket 1366 Platform & Socket

Compatibility information

The Xeon X5550 uses the Intel Socket 1366 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
Intel Socket 1366
PCIe
Gen 2
Package
FC-LGA8
DDR5

Intel Socket 1366 Memory Support

RAM compatibility and speeds

Memory support specifications for the X5550 define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Xeon X5550 determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR3
Memory Bus
Triple-channel
ECC Memory
Supported
📦

Xeon X5550 Product Information

Release and pricing details

The Intel Xeon X5550 is manufactured by Intel and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Xeon X5550 by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
Mar 2009
Market
Server/Workstation
Status
End-of-life
Part Number
SLBF5

Xeon X5550 Benchmark Scores

cinebench_cinebench_r15_multicoreSource

Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how Intel Xeon X5550 performs in parallel rendering workloads like video production and 3D animation. Higher scores mean faster render times in professional applications.

cinebench_cinebench_r15_multicore #1401 of 1788
259
2%
Max: 14,978
Compare with other CPUs

cinebench_cinebench_r20_multicoreSource

Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on Intel Xeon X5550.

cinebench_cinebench_r20_multicore #1401 of 1788
1,083
2%
Max: 62,412
Compare with other CPUs

🏆 Top 5 Performers

cinebench_cinebench_r20_singlecoreSource

Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of Intel Xeon X5550.

cinebench_cinebench_r20_singlecore #1404 of 1784
152
2%
Max: 8,811
Compare with other CPUs

cinebench_cinebench_r23_multicoreSource

Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of Intel Xeon X5550 after thermal limits kick in.

cinebench_cinebench_r23_multicore #1401 of 1788
2,580
2%
Max: 148,601
Compare with other CPUs

🏆 Top 5 Performers

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Xeon X5550 maintains boost clocks under continuous load.

cinebench_cinebench_r23_singlecore #1401 of 1788
364
2%
Max: 20,979
Compare with other CPUs

About Intel Xeon X5550

The Intel X5550 CPU belongs to the Gainestown family of Xeon processors and is built on Intel’s 45 nm process technology. It uses the LGA 1366 socket, making it compatible with a range of workstation and server motherboards released in the late 2000s. With four physical cores and eight threads, the chip delivers solid multi‑tasking capability for its era. A base frequency of 2.67 GHz and a turbo boost up to 3.07 GHz provide a balanced performance envelope. The 8 MB shared L3 cache helps reduce latency for data‑intensive workloads. Released on 30 March 2009, the processor carries a 95 W TDP, which influences cooling and power‑supply choices.

  • Cores: 4
  • Threads: 8
  • Base Clock: 2.67 GHz
  • Turbo Clock: 3.07 GHz
  • L3 Cache: 8 MB (shared)
  • TDP: 95 W

Benchmark testing shows the Intel X5550 CPU scoring 2,580 points in Cinebench R23 multi‑core, indicating respectable parallel processing for a four‑core design. In the single‑core R23 test it reaches 364 points, reflecting the modest clock speeds of the 45 nm architecture. Earlier Cinebench R20 results list 1,083 multi‑core and 152 single‑core points, confirming consistent performance across versions. The older R15 multi‑core score of 259 points further illustrates the chip’s capability in legacy workloads. These figures place the processor in the mid‑range tier when compared to modern CPUs, yet it remains competitive for specific legacy applications. The combination of base and turbo clocks, together with the 8 MB cache, explains the observed benchmark behavior.

The Intel X5550 CPU is targeted at entry‑level servers, workstations, and high‑performance desktop builds that require ECC memory support. Its socket 1366 platform pairs well with DDR3‑1333/1600 memory kits, allowing users to maximize bandwidth without exceeding the processor’s memory controller limits. For optimal stability, a quality heatsink with a 95 W thermal rating and a reliable 450 W power supply are recommended. When assembling a system, choose a motherboard that offers robust VRM design and sufficient PCIe lanes for expansion cards. Users looking to repurpose the chip for virtualization should allocate at least 8 GB of RAM per virtual machine to avoid bottlenecks. Overall, the Intel X5550 CPU delivers a cost‑effective solution for legacy software environments and niche compute tasks.

The AMD Equivalent of Xeon X5550

Looking for a similar processor from AMD? The AMD Ryzen 5 1400 offers comparable performance and features in the AMD lineup.

AMD Ryzen 5 1400

AMD • 4 Cores

View Specs Compare

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