PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Overview

The Core i7-8665U is manufactured by Intel. It was released in 1 October 2018 (7 years ago). It is based on the Whiskey Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 1.9 GHz, with boost up to 4.8 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 6,202 points. Launch price was $409.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar

Based on actual market prices and performance synthetic scores.

FPS Benchmarks

Predicted performance for Core i7-8665U across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Technical Analysis

Detailed breakdown of Core i7-8665U specifications and capabilities.

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Processing Power

The Core i7-8665U is a 4-core / 8-thread processor based on the Whiskey Lake-U (2018−2019) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 4.8 GHz from a base frequency of 1.9 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 8 MB (total) of L3 cache, plus 256 kB (per core) of L2 cache and 64 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 6,202, placing it in the Entry Level performance tier as a Legacy generation product.

Specification	Core i7-8665U
Cores / ThreadsPhysical/logical processing units	4C / 8T
Max Boost ClockPeak single-core speed under boost	4.8 GHz
Base ClockGuaranteed minimum operating frequency	1.9 GHz
ArchitectureCPU microarchitecture design	Whiskey Lake-U (2018−2019)
Process NodeFabrication technology — smaller = more efficient	14 nm
L3 CacheShared cache — reduces memory latency for all cores	8 MB (total)
L2 CachePer-core fast cache for frequently accessed data	256 kB (per core)
L1 CacheUltra-fast per-core cache	64 kB (per core)
Bus SpeedData bus frequency	4 GT/s
Max TemperatureMaximum safe operating temperature (Tjmax)	100 °C
64-bit Support	Yes
Windows 11 Compatible	Yes
PassMark ScoreOverall multi-threaded benchmark score	6,202

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Memory & Platform

The Core i7-8665U fits into the FCBGA1528 socket and supports PCIe 3.0. It supports DDR4 memory.

Specification	Core i7-8665U
TypeDesktop or Laptop processor	Laptop
SeriesProduct family	Intel Core i7
SocketMotherboard socket required	FCBGA1528
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 3.0
RAM TypeSupported memory standard	DDR4
Max CPUs in ConfigMulti-socket support for servers	1 (Uniprocessor)

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Power & Cooling

The Core i7-8665U has a rated TDP (Thermal Design Power) of 15 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.

Specification	Core i7-8665U
TDPThermal Design Power — heat output under sustained workload	15 Watt
Max TemperatureMaximum safe junction temperature (Tjmax)	100 °C

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Value Analysis

Performance ranking position: #1692 out of all indexed processors.

Specification	Core i7-8665U
Launch PriceOriginal retail price at launch	$409
Performance RankPosition in overall performance ranking	#1692
Release DateLaunch date	1 October 2018 (7 years ago)
Release Year	2019
DesignerArchitecture designer (e.g. Intel, AMD)	Intel
ManufacturerFabrication foundry (e.g. TSMC)	Intel

Specifications Reference

Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.

4 categories

General Information

8 specs

Type	Laptop
Series	Intel Core i7
Designer	Intel
Launch Price	$409
Manufacturer	Intel
Release Date	1 October 2018 (7 years ago)
Architecture Codename	Whiskey Lake-U (2018−2019)
Performance Ranking Position	1692

Technical Specifications

14 specs

Cores	4
Threads	8
Bus Type	OPI
L1 Cache	64 kB (per core)
L2 Cache	256 kB (per core)
L3 Cache	8 MB (total)
Bus Speed	4 GT/s
Multiplier	19
Max Frequency	4.8 GHz
64-Bit Support	+
Base Frequency	1.9 GHz
Process Technology	14 nm
Max Core Temperature	100 °C
Windows 11 Compatible	+