i9-11900KB vs i7-11700B

Primary details

Comparing Core i7-11700B and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	524	501
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	17.86
Market segment	Laptop	Desktop processor
Power efficiency	20.46	20.99
Architecture codename	no data	Tiger Lake-H (2021)
Release date	1 April 2021 (3 years ago)	May 2021 (3 years ago)
Launch price (MSRP)	no data	$539

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-11700B and Core i9-11900KB 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	3.2 GHz	3.3 GHz
Boost clock speed	4.8 GHz	4.9 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	no data	80K (per core)
L2 cache	no data	1.25 MB (per core)
L3 cache	24 MB	24 MB (shared)
Chip lithography	10 nm SuperFin	10 nm SuperFin
Die size	no data	190 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Core i7-11700B and Core i9-11900KB 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	FCBGA1787	FCBGA1787
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-11700B and Core i9-11900KB. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Turbo Boost Max 3.0	+	+
Deep Learning Boost	+	+

Security technologies

Core i7-11700B and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	+
SGX	Yes with Intel® ME	Yes with Intel® ME
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-11700B and Core i9-11900KB are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-11700B and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	Up to 3200 MT/s	DDR4
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	51.2 GB/s	51.2 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics for 11th Gen Intel Processors	Intel UHD Graphics for 11th Gen Intel Processors
Quick Sync Video	+	+
Graphics max frequency	1.45 GHz	1.45 GHz
Execution Units	32	32

Graphics interfaces

Available interfaces and connections of Core i7-11700B and Core i9-11900KB integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core i7-11700B and Core i9-11900KB integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	+
Max resolution over HDMI 1.4	4096x2304@60Hz	4096x2304@60Hz
Max resolution over eDP	4096 x 2304@60Hz	4096 x 2304@60Hz
Max resolution over DisplayPort	7680x4320@60Hz	7680x4320@60Hz

Graphics API support

APIs supported by Core i7-11700B and Core i9-11900KB integrated GPUs, sometimes API versions are included.

DirectX	12	12
OpenGL	4.6	4.6

Peripherals

Specifications and connection of peripherals supported by Core i7-11700B and Core i9-11900KB.

PCIe version	no data	4.0
PCI Express lanes	20	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

14.05

14.42

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Should you still have questions on choice between Core i7-11700B and Core i9-11900KB, ask them in Comments section, and we shall answer.

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