INTEL

Intel Pentium 4 HT 651

Intel processor specifications and benchmark scores

1
Cores
2
Threads
GHz Boost
86W
TDP
🖥️Integrated GPU

Intel Pentium 4 HT 651 Specifications

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Pentium 4 HT 651 Core Configuration

Processing cores and threading

The Intel Pentium 4 HT 651 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 651 Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Pentium 4 HT 651 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 651 by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.4 GHz
Boost Clock
N/A
Multiplier
17x
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Intel's Pentium 4 HT 651 Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the Pentium 4 HT 651 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 651's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
28 KB
L2 Cache
2 MB
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NetBurst Architecture & Process

Manufacturing and design details

The Intel Pentium 4 HT 651 is built on Intel's 65 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 651 incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
NetBurst
Codename
Cedar Mill
Process Node
65 nm
Foundry
Intel
Transistors
188 million
Die Size
81 mm²
Generation
Pentium 4 HT (Cedar Mill)
🔢

NetBurst Instruction Set Features

Supported CPU instructions and extensions

The Pentium 4 HT 651 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 651 Power & Thermal

TDP and power specifications

The Intel Pentium 4 HT 651 has a TDP (Thermal Design Power) of 86W, 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
86W
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Intel Socket 775 Platform & Socket

Compatibility information

The Pentium 4 HT 651 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 651 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 651 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 651 Integrated Graphics

Built-in GPU specifications

The Intel Pentium 4 HT 651 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 651 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 651 Product Information

Release and pricing details

The Intel Pentium 4 HT 651 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 651 by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
Jan 2006
Market
Desktop
Status
End-of-life
Part Number
SL94W

Pentium 4 HT 651 Benchmark Scores

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No benchmark data available for this CPU.

About Intel Pentium 4 HT 651

The Intel Pentium 4 HT 651 represents a pivotal processor from Intel's lineup in the mid-2000s, designed as a single-core CPU with Hyper-Threading technology enabling two threads for improved multitasking efficiency. Manufactured on a 65 nm process using the Cedar Mill architecture, this chip delivers a base clock speed of 3.40 GHz, making it suitable for everyday computing tasks of its era. The Intel Pentium 4 HT 651 fits into the Socket 775 platform, which was widely adopted for desktop systems at the time, offering compatibility with various motherboards from that generation. Its thermal design power stands at 86W, requiring adequate cooling solutions to maintain optimal performance. Released on January 5, 2006, the Intel Pentium 4 HT 651 marked the evolution of Pentium 4 series with enhanced power efficiency over predecessors.

Performance metrics for the Intel Pentium 4 HT 651 highlight its capability in single-threaded applications, bolstered by the 3.40 GHz clock speed that provided solid speeds for office productivity and light multimedia use. While Hyper-Threading allows for two logical threads, the single physical core limits its prowess in modern multi-core workloads, though it was competitive in 2006 benchmarks for gaming and content creation of that period. No contemporary benchmark data is available on our site, but historical tests indicate it outperformed earlier Pentium 4 models by approximately 10-15% in integer and floating-point operations due to architectural refinements. The 65 nm process contributed to lower power draw compared to 90 nm variants, aiding in sustained performance without excessive heat buildup. Overall, these metrics position the Intel Pentium 4 HT 651 as a reliable vintage processor for retro computing enthusiasts seeking data on legacy hardware efficiency.

In terms of price bracket, the Intel Pentium 4 HT 651 now falls into the low-end used market, typically ranging from $10 to $30 on secondary marketplaces, reflecting its age and discontinued status. For pairing suggestions, consider components that align with Socket 775 compatibility to build a functional retro system.

  1. Pair with a LGA 775 motherboard like the Intel D975XBX for stable support and overclocking potential.
  2. Combine with DDR2-800 RAM modules, up to 4GB, to maximize memory bandwidth for the era.
  3. Integrate a mid-range GPU such as the NVIDIA GeForce 8800 GT for balanced graphics performance in older games.
This configuration ensures the Intel Pentium 4 HT 651 operates within its design parameters, delivering a cost-effective setup for historical simulations or basic legacy tasks.

The AMD Equivalent of Pentium 4 HT 651

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

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