Pentium 4 HT 651: specs and benchmarks

Summary

Intel started Pentium 4 HT 651 sales on January 2006. Based on a Cedar Mill architecture, this desktop processor is primarily aimed at home systems. It has 1 core and 2 threads, and is based on 65 nm manufacturing technology, with a maximum frequency of 3400 MHz and a locked multiplier.

Compatibility-wise, this is Intel Socket 775 processor with a TDP of 86 Watt. It supports DDR1, DDR2, DDR3 memory.

General info

Pentium 4 HT 651 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance ranking	not rated
Place by popularity	not in top-100
Market segment	Desktop processor
Architecture codename	Cedar Mill (2006)
Release date	January 2006 (18 years ago)
Current price	$95	of 15701 (Xeon Platinum 8276L)

Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	1 (Single-Core)
Threads	2
Boost clock speed	3.4 GHz	of 6.2 (Core i9-14900KS)
L1 cache	28 KB	of 7475.2 (Apple M2 Pro 10-Core)
L2 cache	2 MB	of 96 (Ryzen Threadripper PRO 7995WX)
L3 cache	0 KB	of 786432 (EPYC 7373X)
Chip lithography	65 nm	of 3 (Apple M3 Max 16-Core)
Die size	81 mm2
Number of transistors	188 million	of 9900000 (Ryzen 5 7645HX)
64 bit support	+
Windows 11 compatibility	-
Unlocked multiplier	No

Compatibility

Information on Pentium 4 HT 651 compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	of 8 (Opteron 842)
Socket	775
Power consumption (TDP)	86 Watt	of 400 (Xeon Platinum 9282)

Memory specs

Types, maximum amount and channel number of RAM supported by Pentium 4 HT 651's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types

DDR1, DDR2, DDR3

Benchmark performance

Single-core and multi-core benchmark results of Pentium 4 HT 651. Overall benchmark performance is measured in points in 0-100 range, higher is better.

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