i9-11900KB vs i7-640UM

Primary details

Comparing Core i7-640UM and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2654	494
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	17.86
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Power efficiency	3.89	21.01
Architecture codename	Arrandale (2010−2011)	Tiger Lake-H (2021)
Release date	7 January 2010 (14 years ago)	May 2021 (3 years ago)
Launch price (MSRP)	$305	$539

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-640UM 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	2 (Dual-core)	8 (Octa-Core)
Threads	4	16
Base clock speed	1.2 GHz	3.3 GHz
Boost clock speed	2.27 GHz	4.9 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	8 GT/s
Multiplier	9	no data
L1 cache	64 KB (per core)	80K (per core)
L2 cache	256 KB (per core)	1.25 MB (per core)
L3 cache	4 MB (shared)	24 MB (shared)
Chip lithography	32 nm	10 nm SuperFin
Die size	81+114 mm2	190 mm2
Maximum core temperature	105 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	382+177 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Core i7-640UM 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 (Uniprocessor)	1
Socket	BGA1288	FCBGA1787
Power consumption (TDP)	18 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-640UM 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® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
FMA	+	-
AVX	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
PAE	36 Bit	no data
Turbo Boost Max 3.0	no data	+
FDI	+	no data
Fast Memory Access	+	no data
Deep Learning Boost	-	+

Security technologies

Core i7-640UM and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-640UM 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 i7-640UM and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800	DDR4
Maximum memory size	8 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	12.799 GB/s	51.2 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	Intel® UHD Graphics for 11th Gen Intel® Processors
Quick Sync Video	-	+
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	500 MHz	1.45 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Core i7-640UM and Core i9-11900KB integrated GPUs.

Number of displays supported

2

4

Graphics image quality

Maximum display resolutions supported by Core i7-640UM and Core i9-11900KB integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2304@60Hz
Max resolution over eDP	no data	4096 x 2304@60Hz
Max resolution over DisplayPort	no data	7680x4320@60Hz

Graphics API support

APIs supported by Core i7-640UM and Core i9-11900KB integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Core i7-640UM and Core i9-11900KB.

PCIe version	2.0	4.0
PCI Express lanes	16	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	0.74	14.43
Physical cores	2	8
Threads	4	16
Chip lithography	32 nm	10 nm
Power consumption (TDP)	18 Watt	65 Watt

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Should you still have questions on choice between Core i7-640UM and Core i9-11900KB, ask them in Comments section, and we shall answer.

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