Intel Pentium 6405U processor review

Pentium 6405U processor released by Intel; release date: 1 Oct 2019. At the time of release, the processor cost $161. The processor is designed for mobile-computers and based on Comet Lake microarchitecture.

CPU is locked to prevent overclocking. Total number of cores - 2, threads - 4. Maximum operating temperature - 100°C. Manufacturing process technology - 14 nm. Cache size: L1 - 128 KB, L2 - 512 KB, L3 - 2 MB.

Supported memory types: DDR4-2400, LPDDR3-2133. Maximum memory size: 64 GB.

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

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


CPU mark
Top 1 CPU
This CPU
Single thread mark
Top 1 CPU
This CPU
Name Value
PassMark - CPU mark 2504
PassMark - Single thread mark 1430

Integrated graphics – Intel UHD Graphics 610

Technical info

Boost clock speed 1050 MHz
Core clock speed 300 MHz
Manufacturing process technology 14 nm
Thermal Design Power (TDP) 15 Watt
Transistor count 189 million

Specifications (specs)


Architecture codename Comet Lake
Launch date 1 Oct 2019
Launch price (MSRP) $161
Place in performance rating 611
Processor Number 6405U
Series Intel Pentium Gold Processor Series
Status Launched
Vertical segment Mobile


64 bit support
Base frequency 2.40 GHz
Bus Speed 4 GT/s
L1 cache 128 KB
L2 cache 512 KB
L3 cache 2 MB
Manufacturing process technology 14 nm
Maximum core temperature 100°C
Number of cores 2
Number of threads 4


Max memory channels 2
Maximum memory bandwidth 37.5 GB/s
Maximum memory size 64 GB
Supported memory types DDR4-2400, LPDDR3-2133


Graphics base frequency 300 MHz
Graphics max dynamic frequency 950 MHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® Quick Sync Video
Max video memory 32 GB
Processor graphics Intel UHD Graphics

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@24Hz

Graphics API support

DirectX 12
OpenGL 4.5


Configurable TDP-down 12.5 Watt
Configurable TDP-down Frequency 800 MHz
Max number of CPUs in a configuration 1
Package Size 46mm x 24mm
Sockets supported FCBGA1528
Thermal Design Power (TDP) 15 Watt


Max number of PCIe lanes 12
PCI Express revision 2.0
PCIe configurations 1x4, 2x2, 1x2+2x1 and 4x1

Security & Reliability

Execute Disable Bit (EDB)
Intel® Identity Protection technology
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 64
Intel® AES New Instructions
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
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)