Intel Core i7-8557U processor review

Core i7-8557U processor released by Intel; release date: Q3'19. The processor is designed for mobile-computers and based on Coffee Lake microarchitecture.

CPU is locked to prevent overclocking. Total number of cores - 4, threads - 8. Maximum CPU clock speed - 4.50 GHz. Maximum operating temperature - 100°C. Manufacturing process technology - 14 nm.

Supported memory types: DDR4-2400, LPDDR3-2133. Maximum memory size: 32 GB.

Supported socket types: FCBGA1528. Maximum number of processors in a configuration - 1. Power consumption (TDP): 15 Watt.

The processor has integrated graphics Intel Iris Plus Graphics 645 with the following parameters: maximum video memory size - 32 GB.


Single thread mark
Top 1 CPU
This CPU
CPU mark
Top 1 CPU
This CPU
GFXBench 4.0
Car Chase Offscreen
Top 1 CPU
This CPU
9047 Frames
3200 Frames
GFXBench 4.0
Car Chase Offscreen
Top 1 CPU
This CPU
9047.000 Fps
3200.000 Fps
Name Value
PassMark - Single thread mark 2391
PassMark - CPU mark 10470
GFXBench 4.0 - Car Chase Offscreen 3200 Frames
GFXBench 4.0 - Car Chase Offscreen 3200.000 Fps

Integrated graphics – Intel Iris Plus Graphics 645

Technical info

Boost clock speed 1150 MHz
Core clock speed 300 MHz
Manufacturing process technology 14 nm
Pipelines 48
Thermal Design Power (TDP) 15 Watt

Games performance

X-Plane 11.11 (2018)

Dota 2 Reborn (2015)

BioShock Infinite (2013)

Specifications (specs)


Architecture codename Coffee Lake
Launch date Q3'19
Place in performance rating 217
Processor Number i7-8557U
Series 8th Generation Intel Core i7 Processors
Status Launched
Vertical segment Mobile


64 bit support
Base frequency 1.70 GHz
Bus Speed 4 GT/s
Manufacturing process technology 14 nm
Maximum core temperature 100°C
Maximum frequency 4.50 GHz
Number of cores 4
Number of threads 8


Max memory channels 2
Maximum memory bandwidth 37.5 GB/s
Maximum memory size 32 GB
Supported memory types DDR4-2400, LPDDR3-2133


Device ID 0x3EA6
eDRAM 128 MB
Graphics base frequency 300 MHz
Graphics max dynamic frequency 1.15 GHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory 32 GB
Processor graphics Intel Iris Plus Graphics 645

Graphics interfaces

Number of displays supported 3

Graphics image quality

4K resolution support
Max resolution over DisplayPort 4096x2304@60Hz
Max resolution over eDP 4096x2304@60Hz
Max resolution over HDMI 1.4 4096x2304@30Hz

Graphics API support

DirectX 12
OpenGL 4.5


Max number of CPUs in a configuration 1
Package Size 46x24
Sockets supported FCBGA1528
Thermal Design Power (TDP) 15 Watt


Max number of PCIe lanes 16
PCI Express revision 3.0
PCIe configurations 1x4, 2x2, 1x2+2x1 and 4x1

Security & Reliability

Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Intel® Trusted Execution technology (TXT)

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel SSE4.1, Intel SSE4.2, Intel AVX2
Intel 64
Intel® AES New Instructions
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® My WiFi technology
Intel® Optane™ Memory Supported
Intel® Stable Image Platform Program (SIPP)
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Speed Shift technology
Thermal Monitoring


Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)