i5-2547M vs i9-7940X

Primary details

Comparing Core i9-7940X and Core i5-2547M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	400	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.01	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i9	Intel Core i5
Power efficiency	9.37	no data
Architecture codename	Skylake (server) (2017−2019)	Sandy Bridge (2011−2013)
Release date	30 May 2017 (7 years ago)	no data (2024 years ago)
Launch price (MSRP)	$1,399	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-7940X and Core i5-2547M 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	14 (Tetradeca-Core)	2 (Dual-core)
Threads	28	4
Base clock speed	3.1 GHz	no data
Boost clock speed	4.4 GHz	1.6 GHz
Bus type	DMI 3.0	DMI 2.0
Bus rate	4 × 8 GT/s	4 × 5 GT/s
Multiplier	no data	16
L1 cache	896 KB	128 KB
L2 cache	14 MB	512 KB
L3 cache	19.25 MB (shared)	3 MB
Chip lithography	14 nm	32 nm
Die size	484 mm2	149 mm2
Maximum core temperature	102 °C	no data
Number of transistors	no data	624 Million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-

Compatibility

Information on Core i9-7940X and Core i5-2547M 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)	1 (Uniprocessor)
Socket	FCLGA2066	no data
Power consumption (TDP)	165 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7940X and Core i5-2547M. 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	+	+
FMA	-	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	+	no data

Security technologies

Core i9-7940X and Core i5-2547M 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 i9-7940X and Core i5-2547M are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7940X and Core i5-2547M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR3-1333
Maximum memory size	128 GB	16 GB
Max memory channels	4	2
Maximum memory bandwidth	85.33 GB/s	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

Intel HD Graphics 3000

Peripherals

Specifications and connection of peripherals supported by Core i9-7940X and Core i5-2547M.

PCIe version	3.0	no data
PCI Express lanes	44	no data

Pros & cons summary

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Physical cores	14	2
Threads	28	4
Chip lithography	14 nm	32 nm
Power consumption (TDP)	165 Watt	35 Watt

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Should you still have questions on choice between Core i9-7940X and Core i5-2547M, ask them in Comments section, and we shall answer.

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