Intel Core i7-8665UE vs Intel Core i7-2649M

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CPU comparison with benchmarks


Intel Core i7-8665UE CPU1 vs CPU2 Intel Core i7-2649M
Intel Core i7-8665UE Intel Core i7-2649M

CPU comparison

Intel Core i7-8665UE or Intel Core i7-2649M - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i7-8665UE has 4 cores with 8 threads and clocks with a maximum frequency of 4.40 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-8665UE was released in Q2/2019.

The Intel Core i7-2649M has 2 cores with 4 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to 8 GB of memory in 2 memory channels. The Intel Core i7-2649M was released in Q1/2011.
Intel Core i7 (293) Family Intel Core i7 (293)
Intel Core i 8000U (8) CPU group Intel Core i 2000M (46)
8 Generation 2
Whiskey Lake U Architecture Sandy Bridge H
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i7-8665UE has 4 CPU cores and can calculate 8 threads in parallel. The clock frequency of the Intel Core i7-8665UE is 1.70 GHz (4.40 GHz) while the Intel Core i7-2649M has 2 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the Intel Core i7-2649M is at 2.30 GHz (3.20 GHz).

Intel Core i7-8665UE Characteristic Intel Core i7-2649M
4 Cores 2
8 Threads 4
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
1.70 GHz Frequency 2.30 GHz
4.40 GHz Turbo Frequency (1 Core) 3.20 GHz
-- Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i7-8665UE Characteristic Intel Core i7-2649M
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i7-8665UE or Intel Core i7-2649M has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Intel UHD Graphics 620 GPU Intel HD Graphics 3000
0.30 GHz GPU frequency 0.50 GHz
1.15 GHz GPU (Turbo) 1.10 GHz
9.5 GPU Generation 6
14 nm Technology 32 nm
3 Max. displays 2
24 Compute units 12
192 Shader 96
No Hardware Raytracing No
No Frame Generation No
16 GB Max. GPU Memory 2 GB
12 DirectX Version 10.1

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 620 GPU Intel HD Graphics 3000
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Core i7-8665UE can use up to 64 GB of memory in 2 memory channels. The maximum memory bandwidth is 38.4 GB/s. The Intel Core i7-2649M supports up to 8 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s.

Intel Core i7-8665UE Characteristic Intel Core i7-2649M
DDR4-2400 Memory DDR3-1066, DDR3-1333
64 GB Max. Memory 8 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
-- L2 Cache --
8.00 MB L3 Cache 4.00 MB
3.0 PCIe version 2.0
16 PCIe lanes 16
15.8 GB/s PCIe Bandwidth 8.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core i7-8665UE is 15 W, while the Intel Core i7-2649M has a TDP of 25 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i7-8665UE Characteristic Intel Core i7-2649M
15 W TDP (PL1 / PBP) 25 W
-- TDP (PL2) --
25 W TDP up --
12.5 W TDP down --
100 °C Tjunction max. 100 °C

Technical details

The Intel Core i7-8665UE is manufactured in 14 nm and has 8.00 MB cache. The Intel Core i7-2649M is manufactured in 32 nm and has a 4.00 MB cache.

Intel Core i7-8665UE Characteristic Intel Core i7-2649M
14 nm Technology 32 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX
BGA 1356 Socket BGA 1023
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Linux
Q2/2019 Release date Q1/2011
409 $ Release price 270 $
show more data show more data


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iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i7-8665UE Intel Core i7-8665UE
Intel UHD Graphics 620 @ 1.15 GHz
442 (100%)
Intel Core i7-2649M Intel Core i7-2649M
Intel HD Graphics 3000 @ 1.10 GHz
211 (48%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i7-8665UE Intel Core i7-8665UE
4C 8T @ 4.40 GHz
1075 (100%)
Intel Core i7-2649M Intel Core i7-2649M
2C 4T @ 3.20 GHz
0 (0%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i7-8665UE Intel Core i7-8665UE
4C 8T @ 1.70 GHz
2874 (100%)
Intel Core i7-2649M Intel Core i7-2649M
2C 4T @ 2.30 GHz
0 (0%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i7-8665UE Intel Core i7-8665UE
4C 8T @ 1.70 GHz
5324 (100%)
Intel Core i7-2649M Intel Core i7-2649M
2C 4T @ 2.30 GHz
0 (0%)

Devices using this processor

Intel Core i7-8665UE Intel Core i7-2649M
Unknown Unknown

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