i5-8400T vs i7-8670

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Primary details

Comparing Core i7-8670 and Core i5-8400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated1282
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data4.97
Market segmentDesktop processorDesktop processor
SeriesIntel Core i7Intel Core i5
Power efficiencyno data12.62
Architecture codenameCoffee Lake (2017−2019)Coffee Lake (2017−2019)
Release date1 January 2018 (6 years ago)2 April 2018 (6 years ago)
Launch price (MSRP)no data$182

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-8670 and Core i5-8400T 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 cores6 (Hexa-Core)6 (Hexa-Core)
Threads126
Base clock speed3.1 GHz1.7 GHz
Boost clock speed4.4 GHz3.3 GHz
Bus typeDMI 3.0DMI 3.0
Bus rate4 × 8 GT/s4 × 8 GT/s
Multiplierno data17
L1 cache64K (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache12 MB (shared)9 MB (shared)
Chip lithography14 nm14 nm
Die size149 mm2149 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Core i7-8670 and Core i5-8400T 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 configuration1 (Uniprocessor)1 (Uniprocessor)
Socket1151FCLGA1151
Power consumption (TDP)65 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-8670 and Core i5-8400T. 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++
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data-
TSX+-
Idle Statesno data+
Thermal Monitoring-+
SIPP+-

Security technologies

Core i7-8670 and Core i5-8400T technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
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 Core i7-8670 and Core i5-8400T are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-8670 and Core i5-8400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR4-2666
Maximum memory size64 GB128 GB
Max memory channels22
Maximum memory bandwidth42.671 GB/s42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel UHD Graphics 630Intel UHD Graphics 630
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.05 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i7-8670 and Core i5-8400T integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Core i7-8670 and Core i5-8400T integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2304@24Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz

Graphics API support

APIs supported by Core i7-8670 and Core i5-8400T integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core i7-8670 and Core i5-8400T.

PCIe version3.03.0
PCI Express lanesno data16

Pros & cons summary


Recency 1 January 2018 2 April 2018
Threads 12 6
Power consumption (TDP) 65 Watt 35 Watt

i7-8670 has 100% more threads.

i5-8400T, on the other hand, has an age advantage of 3 months, and 85.7% lower power consumption.

We couldn't decide between Core i7-8670 and Core i5-8400T. We've got no test results to judge.


Should you still have questions on choice between Core i7-8670 and Core i5-8400T, ask them in Comments section, and we shall answer.

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Intel Core i7-8670
Core i7-8670
Intel Core i5-8400T
Core i5-8400T

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Community ratings

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