Ryzen 7 5800U vs Atom C3858

Primary details

Comparing Atom C3858 and Ryzen 7 5800U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1640	668
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.92	no data
Market segment	Server	Laptop
Series	Intel Atom	AMD Cezanne (Zen 3, Ryzen 5000)
Power efficiency	11.20	73.07
Architecture codename	Goldmont (2016−2017)	Cezanne-U (Zen 3) (2021)
Release date	15 August 2017 (7 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$332	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom C3858 and Ryzen 7 5800U 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)	8 (Octa-Core)
Threads	12	16
Base clock speed	2 GHz	1.9 GHz
Boost clock speed	2 GHz	4.4 GHz
Multiplier	20	19
L1 cache	672 KB	64K (per core)
L2 cache	12 MB	512K (per core)
L3 cache	12 MB	16 MB (shared)
Chip lithography	14 nm	7 nm
Die size	no data	180 mm2
Maximum core temperature	83 °C	105 °C
Number of transistors	no data	10,700 million
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Atom C3858 and Ryzen 7 5800U 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	FP6
Power consumption (TDP)	25 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3858 and Ryzen 7 5800U. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data

Security technologies

Atom C3858 and Ryzen 7 5800U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3858 and Ryzen 7 5800U 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 Ryzen 7 5800U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR4
Maximum memory size	256 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

Peripherals

Specifications and connection of peripherals supported by Atom C3858 and Ryzen 7 5800U.

PCIe version	3	3.0
PCI Express lanes	16	8
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	2.97	11.63
Recency	15 August 2017	12 January 2021
Physical cores	12	8
Threads	12	16
Chip lithography	14 nm	7 nm
Power consumption (TDP)	25 Watt	15 Watt

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Should you still have questions on choice between Atom C3858 and Ryzen 7 5800U, ask them in Comments section, and we shall answer.

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