EPYC 9655P vs Atom E645C

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Primary details

Comparing Atom E645C and EPYC 9655P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated1
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data2.48
Market segmentLaptopServer
Power efficiencyno data23.66
Architecture codenameStellarton (2010)Turin (2024)
Release date22 November 2010 (14 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)no data$10,811

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Atom E645C and EPYC 9655P 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 cores1 (Single-Core)96
Threads2192
Base clock speedno data2.6 GHz
Boost clock speed1 GHz4.5 GHz
L1 cache64 KB (per core)80 KB (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache0 KB384 MB (shared)
Chip lithography45 nm4 nm
Die size26 mm212x 70.6 mm2
Number of transistors47 million99,780 million
64 bit support-+
Windows 11 compatibility-no data

Compatibility

Information on Atom E645C and EPYC 9655P 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 configuration11
SocketIntel BGA1466SP5
Power consumption (TDP)4 Watt400 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom E645C and EPYC 9655P. You'll probably need this information if you require some particular technology.

AES-NI-+
AVX-+
Enhanced SpeedStep (EIST)+no data
Hyper-Threading Technology+no data
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom E645C and EPYC 9655P are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom E645C and EPYC 9655P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR2DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel GMA 600N/A

Peripherals

Specifications and connection of peripherals supported by Atom E645C and EPYC 9655P.

PCIe versionno data5.0
PCI Express lanesno data128

Pros & cons summary


Recency 22 November 2010 10 October 2024
Physical cores 1 96
Threads 2 192
Chip lithography 45 nm 4 nm
Power consumption (TDP) 4 Watt 400 Watt

Atom E645C has 9900% lower power consumption.

EPYC 9655P, on the other hand, has an age advantage of 13 years, 9500% more physical cores and 9500% more threads, and a 1025% more advanced lithography process.

We couldn't decide between Atom E645C and EPYC 9655P. We've got no test results to judge.

Be aware that Atom E645C is a notebook processor while EPYC 9655P is a server/workstation one.


Should you still have questions on choice between Atom E645C and EPYC 9655P, ask them in Comments section, and we shall answer.

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Intel Atom E645C
Atom E645C
AMD EPYC 9655P
EPYC 9655P

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