EPYC 9555 vs Athlon PRO 300U

Primary details

Comparing Athlon PRO 300U and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1727	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	AMD Athlon	no data
Power efficiency	16.22	no data
Architecture codename	Raven Ridge 2 (2019)	Turin (2024)
Release date	8 April 2019 (5 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$9,826

Detailed specifications

Athlon PRO 300U and EPYC 9555 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	2 (Dual-core)	64 (Tetrahexaconta-Core)
Threads	4	128
Base clock speed	2.4 GHz	3.2 GHz
Boost clock speed	3.3 GHz	4.4 GHz
Bus type	PCIe 3.0	no data
Multiplier	24	no data
L1 cache	192 KB	80 KB (per core)
L2 cache	1 MB	1 MB (per core)
L3 cache	4 MB (shared)	256 MB (shared)
Chip lithography	12 nm	4 nm
Die size	209.78 mm2	8x 70.6 mm2
Number of transistors	4940 Million	66,520 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Athlon PRO 300U and EPYC 9555 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)	2
Socket	FP5	SP5
Power consumption (TDP)	15 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon PRO 300U and EPYC 9555. You'll probably need this information if you require some particular technology.

Instruction set extensions	XFR, FMA3, SSE 4.2, AVX2, SMT	no data
AES-NI	+	+
AVX	+	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon PRO 300U and EPYC 9555 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon PRO 300U and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR5
Maximum memory size	32 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

AMD Radeon RX Vega 3

N/A

Peripherals

Specifications and connection of peripherals supported by Athlon PRO 300U and EPYC 9555.

PCIe version	3.0	5.0
PCI Express lanes	12	128

Pros & cons summary

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Recency	8 April 2019	10 October 2024
Physical cores	2	64
Threads	4	128
Chip lithography	12 nm	4 nm
Power consumption (TDP)	15 Watt	360 Watt

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