Intel Core i7 8665U

Cores: 4
L3 cache: 8MB (shared)
TDP: 15 W
Transistor size: 14 nm

Core i7 8665U - laptop processor produced by Intel for socket BGA-1528 that has 4 cores and 8 threads. The base clock frequency of the CPU is 1900 MHz, but due to Turbo Boost technology, it can perform up to 4800 MHz. The size of the L3 cache is 8 MB. Please note that this chip has integrated graphics Intel UHD Graphics 620.

Review

Single-Core Performance

37

Multi-Core Performance

9

Power Efficiency

47

Integrated Graphics

23

NanoReview Final Score

27

Compare Intel Core i7 8665U with other CPUs

Cinebench

Reputable cross-platform benchmark for high-performance processors

Cinebench 2024 (Single)

56

Cinebench 2024 (Multi)

162

Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps

Geekbench 6 (Single-Core)

1269

Geekbench 6 (Multi-Core)

3426

File compression	337.7 MB/sec
Clang compilation	18.3 Klines/sec
HTML 5 Browser	84.1 pages/sec
PDF Renderer	104.8 Mpixels/sec
Text processing	108.6 pages/sec
Background blur	17.8 images/sec
Photo processing	36.1 images/sec
Ray tracing	4.18 Mpixels/sec

Sources: GeekBench [1] – 946 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions

Passmark CPU (Single-Core)

2163

Passmark CPU (Multi-Core)

6172

Integer math	22.9 GOps/sec
Floating point math	13.5 GOps/sec
Find prime numbers	22M Primes/sec
Random string sorting	10.4M Strings/sec
Data encryption	2.1 GBytes/sec
Data compression	76.7 MBytes/sec
Physics	461 Frames/sec
Extended instructions	5B Matrices/sec

Sources: PassMark [3] – 2565 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)

Blender CPU

38.39

Performance Per Watt

Shows the score you get per each watt of PL1 TDP

Cinebench 2024 / Watt	10.8 PPW
Geekbench 6 Multi / Watt	228.4 PPW
Passmark CPU Mark / Watt	411.5 PPW
Blender / Watt	2.56 PPW

These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users

Date	Benchmark	Result
📘 2025-03-09 (kokyica1)	Cinebench 2024	56 / 162

Add View all (1)

General

Vendor	Intel
Released	April 16, 2019
Type	Laptop
Instruction Set	x86-64
Codename	Whiskey Lake
Model number	i7-8665U
Integrated GPU	UHD Graphics 620

CPU

Performance Cores
P-Cores	4
P-Threads	8
Base Frequency (P)	1.9 GHz
Turbo Boost Frequency (P)	4.8 GHz

Total
Total Cores	4
Total Threads	8
Multiplier	19x
Bus Bandwidth	4 GT/s
L1 Cache	32K (per core)
L2 Cache	256K (per core)
L3 Cache	8MB (shared)
Unlocked Multiplier	No

Package

Fabrication Process	14 nm
TDP (PL1)	15 W
Socket	BGA-1528
Peak Temperature	100°C

iGPU

Integrated Graphics	Intel UHD Graphics 620
GPU Base Clock	300 MHz
GPU Boost Clock	1150 MHz
Shading Units	192
TMUs	24
ROPs	3
Execution Units	24
TGP	15 W

iGPU FLOPS

0.4 TFLOPS

See also: Intel UHD Graphics 620 – integrated graphics of Intel Core i7 8665U

Memory Support

Memory Types	- DDR4-2400 - LPDDR3-2133
Max. Memory Size	64 GB
Memory Channels	2
Max. Memory Bandwidth	37.5 GB/s
ECC Support	No

Misc

Official Site	Intel Core i7 8665U official page
PCI Express Version	3.0
PCI Express Lanes	16