i9-11900KF vs i7-7820X

Primary details

Comparing Core i7-7820X and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	714	426
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.36	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i7	no data
Power efficiency	7.31	11.92
Architecture codename	Skylake (server) (2017−2018)	Rocket Lake (2021)
Release date	26 June 2017 (7 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$599	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7820X and Core i9-11900KF 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)	8 (Octa-Core)
Threads	16	16
Base clock speed	3.6 GHz	3.5 GHz
Boost clock speed	4.5 GHz	5.2 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	8 GT/s
Multiplier	36	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	1 MB (per core)	256K (per core)
L3 cache	11 MB (shared)	16 MB (shared)
Chip lithography	14 nm	14 nm
Maximum core temperature	99 °C	100 °C
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Core i7-7820X and Core i9-11900KF 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	FCLGA1200
Power consumption (TDP)	140 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820X and Core i9-11900KF. 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® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	no data	+
Thermal Monitoring	-	+
Turbo Boost Max 3.0	+	+
Deep Learning Boost	-	+

Security technologies

Core i7-7820X and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	-
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820X and Core i9-11900KF are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-3200
Maximum memory size	128 GB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	85.33 GB/s	50 GB/s

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 i7-7820X and Core i9-11900KF.

PCIe version	3.0	4.0
PCI Express lanes	28	20

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.

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Pros & cons summary

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Performance score	10.81	15.74
Recency	26 June 2017	16 March 2021
Power consumption (TDP)	140 Watt	125 Watt

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Should you still have questions on choice between Core i7-7820X and Core i9-11900KF, ask them in Comments section, and we shall answer.

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