Core i7-5820K vs Core i9-7920X

Primary details

Comparing Core i9-7920X and Core i7-5820K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	422	1000
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	12.27	2.16
Market segment	Desktop processor	Desktop processor
Series	Intel Core i9	no data
Architecture codename	Skylake (server) (2017−2019)	Haswell-E (2014)
Release date	10 September 2017 (6 years ago)	1 September 2014 (9 years ago)
Launch price (MSRP)	$1,199	$410
Current price	$432 (0.4x MSRP)	$247 (0.6x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-7920X has 468% better value for money than i7-5820K.

Detailed specifications

Core i9-7920X and Core i7-5820K 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	12 (Dodeca-Core)	6 (Hexa-Core)
Threads	24	12
Base clock speed	2.9 GHz	3.3 GHz
Boost clock speed	4.4 GHz	3.6 GHz
Bus support	4 × 8 GT/s	no data
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (per core)	256 KB (per core)
L3 cache	16.5 MB (shared)	15 MB (shared)
Chip lithography	14 nm	22 nm
Die size	484 mm2	356 mm2
Maximum core temperature	95 °C	67 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	2,600 million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	Yes	Yes

Compatibility

Information on Core i9-7920X and Core i7-5820K 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	FCLGA2066	FCLGA2011
Power consumption (TDP)	140 Watt	140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7920X and Core i7-5820K. 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	Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	no data	+
Thermal Monitoring	no data	+
Smart Response	no data	+
Demand Based Switching	no data	-
Turbo Boost Max 3.0	+	no data
Status	Discontinued	Discontinued

Security technologies

Core i9-7920X and Core i7-5820K technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
Identity Protection	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7920X and Core i7-5820K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7920X and Core i7-5820K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4
Maximum memory size	128 GB	64 GB
Max memory channels	4	4
Maximum memory bandwidth	85 GB/s	68 GB/s
ECC memory support	-	-

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 i9-7920X and Core i7-5820K.

PCIe version	3.0	3.0
PCI Express lanes	44	28

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core i9-7920X outperforms Core i7-5820K by 140% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	15.29	6.36
Recency	10 September 2017	1 September 2014
Physical cores	12	6
Threads	24	12
Cost	$1199	$410
Chip lithography	14 nm	22 nm

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Should you still have questions on choice between Core i9-7920X and Core i7-5820K, ask them in Comments section, and we shall answer.

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