i3-8100F vs i5-9400F

Primary details

Comparing Core i5-9400F and Core i3-8100F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1108	not rated
Place by popularity	24	not in top-100
Cost-effectiveness evaluation	9.41	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i5	Intel Core i3
Power efficiency	8.68	no data
Architecture codename	Coffee Lake-R (2018−2019)	Coffee Lake (2017−2019)
Release date	7 January 2019 (5 years ago)	7 January 2019 (5 years ago)
Launch price (MSRP)	$182	$117

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-9400F and Core i3-8100F 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	2.9 GHz	3.6 GHz
Boost clock speed	4.1 GHz	3.6 GHz
Bus type	DMI 3.0	DMI 3.0
Bus rate	4 × 8 GT/s	4 × 8 GT/s
Multiplier	29	36
L1 cache	385 KB	256 KB
L2 cache	1.5 MB	1 MB
L3 cache	9 MB (shared)	6 MB (shared)
Chip lithography	14 nm	14 nm
Die size	149 mm2	126 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Core i5-9400F and Core i3-8100F 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 (Uniprocessor)
Socket	FCLGA1151	1151
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-9400F and Core i3-8100F. 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	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-

Security technologies

Core i5-9400F and Core i3-8100F 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 i5-9400F and Core i3-8100F are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-9400F and Core i3-8100F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-2400
Maximum memory size	128 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	42.671 GB/s	38.397 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Core i5-9400F and Core i3-8100F.

PCIe version	3.0	3.0
PCI Express lanes	16	16

Pros & cons summary

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Physical cores	6	4
Threads	6	4

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Should you still have questions on choice between Core i5-9400F and Core i3-8100F, ask them in Comments section, and we shall answer.

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