Core i7-7740K vs Core i9-7900X

Primary details

Comparing Core i9-7900X and Core i7-7740K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	509	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.71	no data
Market segment	Desktop processor	Desktop processor
Series	Core i9 (Desktop)	no data
Architecture codename	Skylake-X (2018)	Kaby Lake-X (2017)
Release date	26 June 2017 (7 years ago)	no data
Launch price (MSRP)	$999	no data
Current price	$864 (0.9x MSRP)	$618

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-7900X and Core i7-7740K 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	10 (Deca-Core)	4 (Quad-Core)
Threads	20	no data
Base clock speed	3.3 GHz	no data
Boost clock speed	4.5 GHz	4.3 GHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (per core)	256 KB (per core)
L3 cache	14 MB (shared)	8192 KB (shared)
Chip lithography	14 nm	14 nm
Maximum core temperature	95 °C	no data
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	Yes	Yes

Compatibility

Information on Core i9-7900X and Core i7-7740K 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	Socket R4	1151
Power consumption (TDP)	140 Watt	112 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7900X and Core i7-7740K. 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	+	+
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
Status	Discontinued	no data

Security technologies

Core i9-7900X and Core i7-7740K 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 i9-7900X and Core i7-7740K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7900X and Core i7-7740K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4
Maximum memory size	128 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

HD 630

Peripherals

Specifications and connection of peripherals supported by Core i9-7900X and Core i7-7740K.

PCIe version	3.0	no data
PCI Express lanes	44	no data

Pros & cons summary

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Physical cores	10	4
Power consumption (TDP)	140 Watt	112 Watt

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Should you still have questions on choice between Core i9-7900X and Core i7-7740K, ask them in Comments section, and we shall answer.

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