Athlon X4 870K vs Core i5-8400

Primary details

Comparing Core i5-8400 and Athlon X4 870K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1075	1798
Place by popularity	74	not in top-100
Cost-effectiveness evaluation	5.83	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i5	no data
Architecture codename	Coffee Lake-S (2017−2018)	Godaveri (2015−2016)
Release date	24 September 2017 (6 years ago)	December 2015 (8 years ago)
Launch price (MSRP)	$182	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-8400 and Athlon X4 870K 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 cores	6 (Hexa-Core)	4 (Quad-Core)
Threads	6	4
Base clock speed	2.8 GHz	3.9 GHz
Boost clock speed	4 GHz	4.1 GHz
Bus support	4 × 8 GT/s	no data
L1 cache	384 KB	256K
L2 cache	1.5 MB	4 MB
L3 cache	9 MB	no data
Chip lithography	14 nm	28 nm
Die size	149 mm2	245 mm2
Maximum case temperature (TCase)	72 °C	72 °C
Number of transistors	no data	2,411 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	No	Yes

Compatibility

Information on Core i5-8400 and Athlon X4 870K 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 configuration	1 (Uniprocessor)	1
Socket	FCLGA1151	FM2+
Power consumption (TDP)	65 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8400 and Athlon X4 870K. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	no data	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
TSX	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-8400 and Athlon X4 870K are enumerated here.

AMD-V	+	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-8400 and Athlon X4 870K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3-2133
Maximum memory size	64 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel UHD Graphics 630

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-8400 and Athlon X4 870K.

PCIe version	3.0	3.0
PCI Express lanes	16	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Pros & cons summary

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Performance score	5.97	2.20
Physical cores	6	4
Threads	6	4
Chip lithography	14 nm	28 nm
Power consumption (TDP)	65 Watt	95 Watt

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Should you still have questions on choice between Core i5-8400 and Athlon X4 870K, ask them in Comments section, and we shall answer.

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