INTEL

Intel Pentium 4 HT 551

Intel processor specifications and benchmark scores

1
Cores
2
Threads
GHz Boost
115W
TDP
🖥️Integrated GPU

Intel Pentium 4 HT 551 Specifications

⚙️

Pentium 4 HT 551 Core Configuration

Processing cores and threading

The Intel Pentium 4 HT 551 features 1 physical cores and 2 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
1
Threads
2
SMP CPUs
1
⏱️

Pentium 4 HT 551 Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Pentium 4 HT 551 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 Pentium 4 HT 551 by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.4 GHz
Boost Clock
N/A
Multiplier
17x
💾

Intel's Pentium 4 HT 551 Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the Pentium 4 HT 551 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 Pentium 4 HT 551's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
16 KB
L2 Cache
1 MB
🏗️

NetBurst Architecture & Process

Manufacturing and design details

The Intel Pentium 4 HT 551 is built on Intel's 90 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 Pentium 4 HT 551 incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
NetBurst
Codename
Prescott
Process Node
90 nm
Foundry
Intel
Transistors
125 million
Die Size
109 mm²
Generation
Pentium 4 HT (Prescott)
🔢

NetBurst Instruction Set Features

Supported CPU instructions and extensions

The Pentium 4 HT 551 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
Intel 64
🔌

Pentium 4 HT 551 Power & Thermal

TDP and power specifications

The Intel Pentium 4 HT 551 has a TDP (Thermal Design Power) of 115W, 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
115W
🔧

Intel Socket 775 Platform & Socket

Compatibility information

The Pentium 4 HT 551 uses the Intel Socket 775 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 775
PCIe
Gen 2
Package
FC-LGA4
DDR5

Intel Socket 775 Memory Support

RAM compatibility and speeds

Memory support specifications for the Pentium 4 HT 551 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 Pentium 4 HT 551 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
DDR1, DDR2, DDR3
Memory Bus
Dual-channel
🖥️

Intel's Pentium 4 HT 551 Integrated Graphics

Built-in GPU specifications

The Intel Pentium 4 HT 551 includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the Pentium 4 HT 551 provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.

iGPU
On certain motherboards (Chipset feature)
Graphics Model
On certain motherboards (Chipset feature)
📦

Pentium 4 HT 551 Product Information

Release and pricing details

The Intel Pentium 4 HT 551 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 Pentium 4 HT 551 by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
Jun 2005
Market
Desktop
Status
End-of-life
Part Number
SL8J5

Pentium 4 HT 551 Benchmark Scores

📊

No benchmark data available for this CPU.

About Intel Pentium 4 HT 551

The Intel Pentium 4 HT 551 processor, built on a 90nm Prescott core, represents a specific moment in single-core performance evolution. With a base clock of 3.40 GHz and Hyper-Threading enabling two logical threads, this CPU aimed to improve multitasking responsiveness for its era. Real-world performance for general computing tasks was adequate for the mid-2000s, handling office applications and basic multimedia with reasonable efficiency. Its 115W TDP indicates significant heat output, a notable characteristic of the NetBurst architecture, which required robust cooling solutions. Modern users should expect this chip to struggle severely with contemporary software and multi-threaded applications designed for multi-core environments. This aging processor is now primarily of historical and legacy system interest rather than practical daily use.

Gaming capabilities for this Prescott-generation chip were defined by high clock speeds but limited by its single physical core. During its release period, the Pentium 4 HT 551 could handle mainstream DirectX 9 titles when paired with a capable contemporary graphics card. However, the absence of multiple cores and reliance on Hyper-Threading created bottlenecks in newer game engines even a few years post-launch. Modern gaming is entirely impractical, as current titles demand multiple cores and advanced instruction sets absent from this architecture. The 115W thermal design power also posed challenges for system builders seeking quiet, cool-running gaming machines. This CPU's gaming relevance is firmly confined to retro computing enthusiasts exploring period-accurate builds.

The value proposition of this 90nm processor has shifted dramatically since its 2005 launch; it was then a high-frequency option in Intel's desktop lineup. Initially, the chip offered a performance uplift for users upgrading from older NetBurst or Pentium III systems, primarily in lightly-threaded scenarios. Today, its value lies solely in maintaining or restoring legacy systems that require the specific LGA 775 platform. For any modern computing task, even entry-level contemporary processors offer exponentially better performance and power efficiency. The resourceful 551 chip from Intel now serves a niche market, with no viable use-case in current productivity or entertainment workflows. Its enduring legacy is as a testament to the pursuit of raw clock speed in processor design.

Compatibility considerations for this Socket 775 component are extensive, requiring period-correct hardware for a functional system. Motherboard chipset support is typically limited to Intel 915P, 925X, and later 945/955 series chipsets with appropriate BIOS support. System builders must source compatible DDR or DDR2 memory, legacy storage interfaces, and cooling solutions designed for a 115W thermal envelope. The platform's lack of support for modern features like USB 3.0, NVMe storage, or PCI Express 3.0+ severely limits upgrade paths. This particular Intel CPU exemplifies a technological crossroads, bridging older standards with the then-emerging 64-bit and multi-core computing paradigms. Ultimately, deploying this processor today is a specialized endeavor for preserving a specific era of computing history.

The AMD Equivalent of Pentium 4 HT 551

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

Popular Intel Pentium 4 HT 551 Comparisons

See how the Pentium 4 HT 551 stacks up against similar processors from the same generation and competing brands.

Compare Pentium 4 HT 551 with Other CPUs

Select another CPU to compare specifications and benchmarks side-by-side.

Browse CPUs