EPYC 7261 vs Atom C3955

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Aggregate performance score

Atom C3955
2017
16 cores / 16 threads, 32 Watt
3.65
EPYC 7261
2018
8 cores / 16 threads, 155 Watt
7.02
+92.3%

EPYC 7261 outperforms Atom C3955 by an impressive 92% based on our aggregate benchmark results.

Primary details

Comparing Atom C3955 and EPYC 7261 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking15001008
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.94no data
Market segmentServerServer
SeriesIntel AtomAMD EPYC
Power efficiency10.793.91
Architecture codenameGoldmont (2016−2017)Naples (2017−2018)
Release date15 August 2017 (7 years ago)14 June 2018 (6 years ago)
Launch price (MSRP)$434no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Atom C3955 and EPYC 7261 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 cores16 (Hexadeca-Core)8 (Octa-Core)
Threads1616
Base clock speed2.1 GHz2.5 GHz
Boost clock speed2.4 GHz2.5 GHz
Multiplier2125
L1 cache896 KB768 KB
L2 cache16 MB4 MB
L3 cache16 MB64 MB
Chip lithography14 nm14 nm
Die sizeno data213 mm2
Maximum core temperature78 °Cno data
Maximum case temperature (TCase)no data81 °C
Number of transistorsno data19200 Million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+

Compatibility

Information on Atom C3955 and EPYC 7261 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 configuration1 (Uniprocessor)2 (Multiprocessor)
SocketFCBGA1310SP3
Power consumption (TDP)32 Watt155 W, 170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3955 and EPYC 7261. 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 Technology2.0no data
Hyper-Threading Technology-no data

Security technologies

Atom C3955 and EPYC 7261 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 EPYC 7261 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 EPYC 7261. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4: 2400DDR4-2666
Maximum memory size256 GB2 TiB
Max memory channels28
Maximum memory bandwidth38.397 GB/s170.671 GB/s
ECC memory support++

Peripherals

Specifications and connection of peripherals supported by Atom C3955 and EPYC 7261.

PCIe version33.0
PCI Express lanes16128
USB revision3no data
Total number of SATA ports16no data
Max number of SATA 6 Gb/s Ports16no data
Number of USB ports8no data
Integrated LAN4x10/2.5/1 GBEno 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.


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.

Atom C3955 3.65
EPYC 7261 7.02
+92.3%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Atom C3955 5803
EPYC 7261 11149
+92.1%

Gaming performance

Pros & cons summary


Performance score 3.65 7.02
Recency 15 August 2017 14 June 2018
Physical cores 16 8
Power consumption (TDP) 32 Watt 155 Watt

Atom C3955 has 100% more physical cores, and 384.4% lower power consumption.

EPYC 7261, on the other hand, has a 92.3% higher aggregate performance score, and an age advantage of 9 months.

The EPYC 7261 is our recommended choice as it beats the Atom C3955 in performance tests.


Should you still have questions on choice between Atom C3955 and EPYC 7261, ask them in Comments section, and we shall answer.

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Intel Atom C3955
Atom C3955
AMD EPYC 7261
EPYC 7261

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Community ratings

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Questions & comments

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