EPYC 9654 vs Atom N455

Primary details

Comparing Atom N455 and EPYC 9654 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	4
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	10.11
Market segment	Laptop	Server
Series	Intel Atom	AMD EPYC
Architecture codename	Pinetrail (2009−2010)	Genoa
Release date	1 June 2010 (13 years ago)	10 November 2022 (1 year ago)
Launch price (MSRP)	$64	$11,805
Current price	$163 (2.5x MSRP)	$4544 (0.4x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom N455 and EPYC 9654 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	1 (Single-Core)	96
Threads	2	192
Base clock speed	1.66 GHz	2.4 GHz
Boost clock speed	1.67 GHz	2.4 GHz
Bus support	533 MHz	no data
L1 cache	64 KB (per core)	6 MB
L2 cache	512K (per core)	96 MB
L3 cache	0 KB	384 MB (shared)
Chip lithography	45 nm	5 nm, 6 nm
Die size	66 mm2	12x 72 mm2
Maximum core temperature	100 °C	no data
Number of transistors	123 million	78,840 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	No	No

Compatibility

Information on Atom N455 and EPYC 9654 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	2
Socket	FCBGA559	SP5
Power consumption (TDP)	6.5 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom N455 and EPYC 9654. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	no data
AES-NI	no data	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
Thermal Monitoring	+	no data
Demand Based Switching	-	no data
Status	Discontinued	no data

Security technologies

Atom N455 and EPYC 9654 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom N455 and EPYC 9654 are enumerated here.

AMD-V	no data	+
VT-d	-	no data
VT-x	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom N455 and EPYC 9654. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-4800
Maximum memory size	2 GB	6 TiB
Max memory channels	1	no data
Maximum memory bandwidth	no data	460.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel GMA 3150

no data

Peripherals

Specifications and connection of peripherals supported by Atom N455 and EPYC 9654.

PCIe version	no data	5.0
PCI Express lanes	no data	128

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Pros & cons summary

---

Recency	1 June 2010	10 November 2022
Physical cores	1	96
Threads	2	192
Cost	$64	$11805
Chip lithography	45 nm	5 nm
Power consumption (TDP)	6 Watt	360 Watt

---

Should you still have questions on choice between Atom N455 and EPYC 9654, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---