Pentium 4 HT 651 vs i7-880

Primary details

Comparing Core i7-880 and Pentium 4 HT 651 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1889	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.09	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	2.08	no data
Architecture codename	Lynnfield (2009−2010)	Cedar Mill (2006)
Release date	30 May 2010 (14 years ago)	January 2006 (18 years ago)
Launch price (MSRP)	$583	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-880 and Pentium 4 HT 651 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	1 (Single-Core)
Threads	8	2
Base clock speed	3.06 GHz	no data
Boost clock speed	3.73 GHz	3.4 GHz
Bus rate	2.5 GT/s	no data
L1 cache	64 KB (per core)	28 KB
L2 cache	256 KB (per core)	2 MB
L3 cache	8 MB (shared)	0 KB
Chip lithography	45 nm	65 nm
Die size	296 mm2	81 mm2
Maximum core temperature	73 °C	no data
Number of transistors	774 million	188 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-880 and Pentium 4 HT 651 compatibility with other computer components: 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	1
Socket	FCLGA1156,LGA1156	775
Power consumption (TDP)	95 Watt	86 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-880 and Pentium 4 HT 651. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Demand Based Switching	-	no data
PAE	36 Bit	no data

Security technologies

Core i7-880 and Pentium 4 HT 651 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-880 and Pentium 4 HT 651 are enumerated here.

VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-880 and Pentium 4 HT 651. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21 GB/s	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-880 and Pentium 4 HT 651.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Physical cores	4	1
Threads	8	2
Chip lithography	45 nm	65 nm
Power consumption (TDP)	95 Watt	86 Watt

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Should you still have questions on choice between Core i7-880 and Pentium 4 HT 651, ask them in Comments section, and we shall answer.

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