Atom x7405C vs i7-7820X

Primary details

Comparing Core i7-7820X and Atom x7405C processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	714	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.36	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i7	no data
Power efficiency	7.31	no data
Architecture codename	Skylake (server) (2017−2018)	Amston Lake (2024)
Release date	26 June 2017 (7 years ago)	8 April 2024 (less than a year ago)
Launch price (MSRP)	$599	$57

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7820X and Atom x7405C 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	8 (Octa-Core)	4 (Quad-Core)
Threads	16	4
Base clock speed	3.6 GHz	1.7 GHz
Boost clock speed	4.5 GHz	3.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	36	no data
L1 cache	64 KB (per core)	96 KB (per core)
L2 cache	1 MB (per core)	2 MB (shared)
L3 cache	11 MB (shared)	6 MB (shared)
Chip lithography	14 nm	10 nm
Maximum core temperature	99 °C	no data
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i7-7820X and Atom x7405C 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
Socket	FCLGA2066	Intel BGA 1264
Power consumption (TDP)	140 Watt	12 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820X and Atom x7405C. 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	+	-
Turbo Boost Max 3.0	+	no data

Security technologies

Core i7-7820X and Atom x7405C technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820X and Atom x7405C are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Atom x7405C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4, DDR5
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

N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-7820X and Atom x7405C.

PCIe version	3.0	3.0
PCI Express lanes	28	9

Pros & cons summary

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Recency	26 June 2017	8 April 2024
Physical cores	8	4
Threads	16	4
Chip lithography	14 nm	10 nm
Power consumption (TDP)	140 Watt	12 Watt

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Should you still have questions on choice between Core i7-7820X and Atom x7405C, ask them in Comments section, and we shall answer.

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