Ryzen 5 PRO 8540U vs Atom C3955

Primary details

Comparing Atom C3955 and Ryzen 5 PRO 8540U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1453	642
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.15	no data
Market segment	Server	Server
Series	Intel Atom	no data
Architecture codename	Goldmont (2016−2017)	Hawk Point (2024)
Release date	15 August 2017 (7 years ago)	16 April 2024 (less than a year ago)
Launch price (MSRP)	$434	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom C3955 and Ryzen 5 PRO 8540U 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	16 (Hexadeca-Core)	6 (Hexa-Core)
Threads	16	12
Base clock speed	2.1 GHz	3.2 GHz
Boost clock speed	2.4 GHz	4.9 GHz
Multiplier	21	no data
L1 cache	896 KB	64 KB (per core)
L2 cache	16 MB	1 MB (per core)
L3 cache	16 MB	16 MB (shared)
Chip lithography	14 nm	4 nm
Die size	no data	137 mm2
Maximum core temperature	78 °C	no data
Number of transistors	no data	20,900 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Atom C3955 and Ryzen 5 PRO 8540U 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	FP7
Power consumption (TDP)	32 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3955 and Ryzen 5 PRO 8540U. 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	2.0	no data
Hyper-Threading Technology	-	no data
Status	Launched	no data
Precision Boost 2	no data	+

Security technologies

Atom C3955 and Ryzen 5 PRO 8540U 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 C3955 and Ryzen 5 PRO 8540U 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 C3955 and Ryzen 5 PRO 8540U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR5
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 740M

Peripherals

Specifications and connection of peripherals supported by Atom C3955 and Ryzen 5 PRO 8540U.

PCIe version	3	4.0
PCI Express lanes	16	14
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.

Pros & cons summary

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Performance score	3.75	11.90
Recency	15 August 2017	16 April 2024
Physical cores	16	6
Threads	16	12
Chip lithography	14 nm	4 nm
Power consumption (TDP)	32 Watt	28 Watt

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Should you still have questions on choice between Atom C3955 and Ryzen 5 PRO 8540U, ask them in Comments section, and we shall answer.

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