Xeon E7-2870 v2 vs Pentium 4 HT 651

Primary details

Comparing Pentium 4 HT 651 and Xeon E7-2870 v2 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Architecture codename	Cedar Mill (2006)	no data
Release date	January 2006 (18 years ago)	1 January 2014 (10 years ago)
Current price	$95	$58

Detailed specifications

Pentium 4 HT 651 and Xeon E7-2870 v2 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	1 (Single-Core)	15 (Pentadeca-Core)
Threads	2	30
Base clock speed	no data	2.3 GHz
Boost clock speed	3.4 GHz	2.9 GHz
L1 cache	28 KB	no data
L2 cache	2 MB	no data
L3 cache	0 KB	30 MB
Chip lithography	65 nm	22 nm
Die size	81 mm2	no data
Maximum core temperature	no data	73 °C
Number of transistors	188 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Pentium 4 HT 651 and Xeon E7-2870 v2 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	2
Socket	775	FCLGA2011
Power consumption (TDP)	86 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium 4 HT 651 and Xeon E7-2870 v2. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX
AES-NI	no data	+
Enhanced SpeedStep (EIST)	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	no data	-
Idle States	no data	+
Thermal Monitoring	no data	+
PAE	no data	46 Bit
Instruction Replay	no data	-
Status	no data	Discontinued

Security technologies

Pentium 4 HT 651 and Xeon E7-2870 v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium 4 HT 651 and Xeon E7-2870 v2 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 Pentium 4 HT 651 and Xeon E7-2870 v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR3-1066, DDR3-1333, DDR3-1600
Maximum memory size	no data	1.5 TB
Max memory channels	no data	4
Maximum memory bandwidth	no data	85 GB/s
ECC memory support	no data	+

Peripherals

Specifications and connection of peripherals supported by Pentium 4 HT 651 and Xeon E7-2870 v2.

PCIe version	no data	3.0
PCI Express lanes	no data	32

Pros & cons summary

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Physical cores	1	15
Threads	2	30
Chip lithography	65 nm	22 nm
Power consumption (TDP)	86 Watt	130 Watt

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Should you still have questions on choice between Pentium 4 HT 651 and Xeon E7-2870 v2, ask them in Comments section, and we shall answer.

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