Core i5-8420T vs Core i7-7740X

Primary details

Comparing Core i7-7740X and Core i5-8420T processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1013	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	8.68	no data
Market segment	Desktop processor	Desktop processor
Series	Core i7 (Desktop)	Intel Core i5
Architecture codename	Kaby Lake-X (2017)	Coffee Lake (2017−2019)
Release date	26 June 2017 (7 years ago)	1 September 2018 (5 years ago)
Launch price (MSRP)	$339	no data
Current price	$139 (0.4x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7740X and Core i5-8420T 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)	6 (Hexa-Core)
Threads	8	6
Base clock speed	4.3 GHz	1.8 GHz
Boost clock speed	4.5 GHz	3.4 GHz
Bus support	no data	4 × 8 GT/s
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	8 MB (shared)	9 MB (shared)
Chip lithography	14 nm	14 nm
Die size	no data	126 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	No

Compatibility

Information on Core i7-7740X and Core i5-8420T 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 (Uniprocessor)
Socket	FCLGA2066	1151
Power consumption (TDP)	112 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7740X and Core i5-8420T. You'll probably need this information if you require some particular technology.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7740X and Core i5-8420T are enumerated here.

AMD-V	+	no data
VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7740X and Core i5-8420T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4 Dual-channel
Maximum memory size	64 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	42 GB/s	42.671 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

HD 630

Intel UHD Graphics 630

Peripherals

Specifications and connection of peripherals supported by Core i7-7740X and Core i5-8420T.

PCIe version	3.0	3.0
PCI Express lanes	16	no data

Pros & cons summary

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Recency	26 June 2017	1 September 2018
Physical cores	4	6
Threads	8	6
Power consumption (TDP)	112 Watt	35 Watt

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Should you still have questions on choice between Core i7-7740X and Core i5-8420T, ask them in Comments section, and we shall answer.

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