i5-12400F vs Atom C3858

Primary details

Comparing Atom C3858 and Core i5-12400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1642	621
Place by popularity	not in top-100	4
Cost-effectiveness evaluation	0.94	43.83
Market segment	Server	Desktop processor
Series	Intel Atom	no data
Power efficiency	11.21	17.89
Architecture codename	Goldmont (2016−2017)	Alder Lake-S (2022)
Release date	15 August 2017 (7 years ago)	4 January 2022 (2 years ago)
Launch price (MSRP)	$332	$180

Cost-effectiveness evaluation

Performance per price, higher is better.

i5-12400F has 4563% better value for money than Atom C3858.

Detailed specifications

Atom C3858 and Core i5-12400F 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	12 (Dodeca-Core)	6 (Hexa-Core)
Threads	12	12
Base clock speed	2 GHz	2.5 GHz
Boost clock speed	2 GHz	4.4 GHz
Multiplier	20	no data
L1 cache	672 KB	80K (per core)
L2 cache	12 MB	1.25 MB (per core)
L3 cache	12 MB	18 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	no data	163 mm2
Maximum core temperature	83 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Atom C3858 and Core i5-12400F 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	FCBGA1310	FCLGA1700
Power consumption (TDP)	25 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3858 and Core i5-12400F. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
QuickAssist	+	no data
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	no data	+
Thermal Monitoring	-	+
Turbo Boost Max 3.0	no data	-
Deep Learning Boost	-	+

Security technologies

Atom C3858 and Core i5-12400F technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
Secure Boot	+	no data
Secure Key	+	+
SGX	-	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3858 and Core i5-12400F are enumerated here.

AMD-V	-	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3858 and Core i5-12400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR5-4800, DDR4-3200
Maximum memory size	256 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	76.8 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Atom C3858 and Core i5-12400F.

PCIe version	3	5.0 and 4.0
PCI Express lanes	16	20
USB revision	3	no data
Total number of SATA ports	16	no data
Max number of SATA 6 Gb/s Ports	16	no data
Number of USB ports	8	no data
Integrated LAN	4x10/2.5/1 GBE	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	2.96	12.29
Recency	15 August 2017	4 January 2022
Physical cores	12	6
Power consumption (TDP)	25 Watt	65 Watt

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Should you still have questions on choice between Atom C3858 and Core i5-12400F, ask them in Comments section, and we shall answer.

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