A9-9420e vs i7-8700K

Primary details

Comparing Core i7-8700K and A9-9420e processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	874	2702
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.58	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i7	AMD Bristol Ridge
Power efficiency	8.54	4.38
Architecture codename	Coffee Lake-S (2017−2018)	Stoney Ridge (2016−2019)
Release date	5 October 2017 (7 years ago)	1 June 2018 (6 years ago)
Launch price (MSRP)	$359	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-8700K and A9-9420e 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)	2 (Dual-core)
Threads	12	2
Base clock speed	3.7 GHz	no data
Boost clock speed	4.7 GHz	no data
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	37	no data
L1 cache	64K (per core)	no data
L2 cache	256K (per core)	1 MB
L3 cache	12288 KB	no data
Chip lithography	14 nm	28 nm
Die size	149 mm2	124.5 mm2
Maximum core temperature	100 °C	90 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	1200 Million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-8700K and A9-9420e 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)	no data
Socket	FCLGA1151	BGA
Power consumption (TDP)	95 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-8700K and A9-9420e. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Virtualization,
AES-NI	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	+	-

Security technologies

Core i7-8700K and A9-9420e technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-8700K and A9-9420e are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-8700K and A9-9420e. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR4
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel UHD Graphics 630	AMD Radeon R5 (Stoney Ridge)
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.2 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-8700K and A9-9420e integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i7-8700K and A9-9420e integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096 x 2304@24Hz	no data
Max resolution over eDP	4096 x 2304@60Hz	no data
Max resolution over DisplayPort	4096 x 2304@60Hz	no data

Graphics API support

APIs supported by Core i7-8700K and A9-9420e integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-8700K and A9-9420e.

PCIe version	3.0	no data
PCI Express lanes	16	no data

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.

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Pros & cons summary

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Performance score	8.90	0.72
Integrated graphics card	3.09	1.48
Recency	5 October 2017	1 June 2018
Physical cores	6	2
Threads	12	2
Chip lithography	14 nm	28 nm
Power consumption (TDP)	95 Watt	15 Watt

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Should you still have questions on choice between Core i7-8700K and A9-9420e, ask them in Comments section, and we shall answer.

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