EPYC 7401 vs Atom C3858

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1912	173
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.38	8.27
Market segment	Server	Server
Series	Intel Atom	AMD EPYC
Power efficiency	4.86	7.84
Designer	Intel	AMD
Architecture codename	Goldmont (2016−2017)	Naples (2017−2018)
Release date	15 August 2017 (8 years ago)	29 June 2017 (8 years ago)
Launch price (MSRP)	$332	$1,850

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7401 has 2076% better value for money than Atom C3858.

Performance to price scatter graph

Detailed specifications

Atom C3858 and EPYC 7401 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)	24 (Tetracosa-Core)
Threads	12	48
Base clock speed	2 GHz	2 GHz
Boost clock speed	2 GHz	3 GHz
Multiplier	20	20
L1 cache	672 KB	96K (per core)
L2 cache	12 MB	512K (per core)
L3 cache	12 MB	64 MB (shared)
Chip lithography	14 nm	14 nm
Die size	no data	192 mm2
Maximum core temperature	83 °C	no data
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Atom C3858 and EPYC 7401 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)	2 (Multiprocessor)
Socket	FCBGA1310	TR4
Power consumption (TDP)	25 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3858 and EPYC 7401. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data

Security technologies

Atom C3858 and EPYC 7401 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3858 and EPYC 7401 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 Atom C3858 and EPYC 7401. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR4 Eight-channel
Maximum memory size	256 GB	2 TiB
Max memory channels	2	8
Maximum memory bandwidth	38.397 GB/s	170.671 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Atom C3858 and EPYC 7401.

PCIe version	3	3.0
PCI Express lanes	16	128
USB revision	3	no data
Total number of SATA ports	16	no data
Number of USB ports	8	no data
Integrated LAN	4x10/2.5/1 GBE	no data

Synthetic benchmarks

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.

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Pros & cons summary

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Performance score	2.88	31.58
Recency	15 August 2017	29 June 2017
Physical cores	12	24
Threads	12	48
Power consumption (TDP)	25 Watt	170 Watt