A9-9400 SoC vs i5-8259U

Primary details

Comparing Core i5-8259U and A9-9400 SoC processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1224	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i5	no data
Power efficiency	16.76	no data
Architecture codename	Coffee Lake-U (2018−2019)	Stoney Ridge (2016−2019)
Release date	5 April 2018 (6 years ago)	31 May 2016 (8 years ago)
Launch price (MSRP)	$320	no data

Detailed specifications

Core i5-8259U and A9-9400 SoC 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	4 (Quad-Core)	2 (Dual-core)
Threads	8	2
Base clock speed	2.3 GHz	2.4 GHz
Boost clock speed	3.8 GHz	3.2 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	23	no data
L1 cache	64K (per core)	160 KB
L2 cache	256K (per core)	1 MB (per core)
L3 cache	6 MB (shared)	0 KB
Chip lithography	14 nm	28 nm
Die size	126 mm2	125 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	74 °C
Number of transistors	no data	1,200 million
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Core i5-8259U and A9-9400 SoC 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	FCBGA1528	FT4
Power consumption (TDP)	28 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8259U and A9-9400 SoC. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
FMA	-	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
eDRAM	128 MB	no data
Speed Shift	+	no data
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data

Security technologies

Core i5-8259U and A9-9400 SoC 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 i5-8259U and A9-9400 SoC 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 i5-8259U and A9-9400 SoC. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel Iris Plus Graphics 655	Radeon R5 3CU
Max video memory	32 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.05 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-8259U and A9-9400 SoC integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i5-8259U and A9-9400 SoC integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@30Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Core i5-8259U and A9-9400 SoC 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 i5-8259U and A9-9400 SoC.

PCIe version	3.0	3.0
PCI Express lanes	16	8

Pros & cons summary

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Recency	5 April 2018	31 May 2016
Physical cores	4	2
Threads	8	2
Chip lithography	14 nm	28 nm
Power consumption (TDP)	28 Watt	10 Watt

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