i7-11700KF vs i7-640UM

Place in the ranking	2627	450
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Architecture codename	Arrandale (2010−2011)	Rocket Lake (2021)
Release date	7 January 2010 (14 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$305	no data

Detailed specifications

Core i7-640UM and Core i7-11700KF 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	3.6 GHz
Boost clock speed	2.27 GHz	5 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)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	4 MB (shared)	16 MB (shared)
Chip lithography	32 nm	14 nm
Die size	81+114 mm²	no data
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 i7-11700KF 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	FCLGA1200
Power consumption (TDP)	18 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-640UM and Core i7-11700KF. 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, Intel® AVX-512
AES-NI	+	+
FMA	+	-
AVX	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
PAE	36 Bit	no data
Turbo Boost Max 3.0	no data	+
FDI	+	no data
Fast Memory Access	+	no data
Status	Discontinued	Discontinued
Deep Learning Boost	-	+

Security technologies

Core i7-640UM and Core i7-11700KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-640UM and Core i7-11700KF 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 i7-11700KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800	DDR4-3200
Maximum memory size	8 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	12.799 GB/s	50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	no data
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	500 MHz	no data

Graphics interfaces

Available interfaces and connections of Core i7-640UM and Core i7-11700KF integrated GPUs.

Number of displays supported

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-640UM and Core i7-11700KF.

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.

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.

i7-640UM 0.77

i7-11700KF 15.69
+1938%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-640UM 1183

i7-11700KF 23963
+1926%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-640UM 226

i7-11700KF 2299
+917%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-640UM 442

i7-11700KF 10322
+2235%

Gaming performance

Pros & cons summary

Performance score	0.77	15.69
Recency	7 January 2010	16 March 2021
Physical cores	2	8
Threads	4	16
Chip lithography	32 nm	14 nm
Power consumption (TDP)	18 Watt	125 Watt

i7-640UM has 594.4% lower power consumption.

i7-11700KF, on the other hand, has a 1937.7% higher aggregate performance score, an age advantage of 11 years, 300% more physical cores and 300% more threads, and a 128.6% more advanced lithography process.

The Core i7-11700KF is our recommended choice as it beats the Core i7-640UM in performance tests.

Be aware that Core i7-640UM is a notebook processor while Core i7-11700KF is a desktop one.

Should you still have questions on choice between Core i7-640UM and Core i7-11700KF, ask them in Comments section, and we shall answer.