i5-8400H vs Atom E665C

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Primary details

Comparing Atom E665C and Core i5-8400H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated1255
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Seriesno dataIntel Core i5
Power efficiencyno data10.12
Architecture codenameStellarton (2010)Coffee Lake-H (2018−2019)
Release date22 November 2010 (14 years ago)2 April 2018 (6 years ago)
Launch price (MSRP)no data$250

Detailed specifications

Atom E665C and Core i5-8400H basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores1 (Single-Core)4 (Quad-Core)
Threads28
Base clock speedno data2.5 GHz
Boost clock speed1.3 GHz4.2 GHz
Bus typeno dataDMI 3.0
Bus rateno data4 × 8 GT/s
Multiplierno data25
L1 cache64 KB (per core)64K (per core)
L2 cache512 KB (per core)256K (per core)
L3 cache0 KB12 MB (shared)
Chip lithography45 nm14 nm
Die size26 mm2126 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors47 millionno data
64 bit support-+
Windows 11 compatibility-+

Compatibility

Information on Atom E665C and Core i5-8400H compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11 (Uniprocessor)
SocketIntel BGA1466FCBGA1440
Power consumption (TDP)4 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom E665C and Core i5-8400H. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI-+
AVX-+
vProno data+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
My WiFino data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technology++
TSX-+
Idle Statesno data+
Thermal Monitoring-+
Flex Memory Accessno data+
SIPP-+

Security technologies

Atom E665C and Core i5-8400H technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom E665C and Core i5-8400H are enumerated here.

AMD-V-+
VT-dno data+
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom E665C and Core i5-8400H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR2DDR4
Maximum memory sizeno data64 GB
Max memory channelsno data2
Maximum memory bandwidthno data42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel GMA 600Intel UHD Graphics 630
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.1 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Atom E665C and Core i5-8400H integrated GPUs.

Number of displays supportedno data3
eDPno data+
DisplayPort-+
HDMI-+
DVIno data+

Graphics image quality

Maximum display resolutions supported by Atom E665C and Core i5-8400H integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2304@30Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz
Max resolution over VGAno dataN/A

Graphics API support

APIs supported by Atom E665C and Core i5-8400H integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Atom E665C and Core i5-8400H.

PCIe versionno data3.0
PCI Express lanesno data16

Pros & cons summary


Recency 22 November 2010 2 April 2018
Physical cores 1 4
Threads 2 8
Chip lithography 45 nm 14 nm
Power consumption (TDP) 4 Watt 45 Watt

Atom E665C has 1025% lower power consumption.

i5-8400H, on the other hand, has an age advantage of 7 years, 300% more physical cores and 300% more threads, and a 221.4% more advanced lithography process.

We couldn't decide between Atom E665C and Core i5-8400H. We've got no test results to judge.


Should you still have questions on choice between Atom E665C and Core i5-8400H, ask them in Comments section, and we shall answer.

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Intel Atom E665C
Atom E665C
Intel Core i5-8400H
Core i5-8400H

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