Pentium D 840 EE vs i7-7800X

Primary details

Comparing Core i7-7800X and Pentium D 840 EE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	924	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.14	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i7	no data
Power efficiency	5.47	no data
Architecture codename	Skylake (server) (2017−2019)	Smithfield (2005)
Release date	30 May 2017 (7 years ago)	May 2005 (19 years ago)
Launch price (MSRP)	$383	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7800X and Pentium D 840 EE 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	6 (Hexa-Core)	2 (Dual-core)
Threads	12	4
Base clock speed	3.5 GHz	no data
Boost clock speed	4 GHz	3.2 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	35	no data
L1 cache	384 KB	28 KB
L2 cache	6 MB	2 MB
L3 cache	8.25 MB (shared)	0 KB
Chip lithography	14 nm	90 nm
Die size	no data	206 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	169 million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-7800X and Pentium D 840 EE 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 (Uniprocessor)	2
Socket	FCLGA2066	775
Power consumption (TDP)	140 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7800X and Pentium D 840 EE. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-

Security technologies

Core i7-7800X and Pentium D 840 EE technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7800X and Pentium D 840 EE are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7800X and Pentium D 840 EE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR1, DDR2, DDR3
Maximum memory size	128 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-7800X and Pentium D 840 EE.

PCIe version	3.0	no data
PCI Express lanes	28	no data

Pros & cons summary

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Physical cores	6	2
Threads	12	4
Chip lithography	14 nm	90 nm
Power consumption (TDP)	140 Watt	130 Watt

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Should you still have questions on choice between Core i7-7800X and Pentium D 840 EE, ask them in Comments section, and we shall answer.

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