EPYC 9454 vs Ryzen 9 3900XT

Primary details

Comparing Ryzen 9 3900XT and EPYC 9454 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	268	17
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	24.97	7.47
Market segment	Desktop processor	Server
Series	AMD Ryzen 9	AMD EPYC
Power efficiency	18.53	19.64
Architecture codename	Matisse 2 (2020)	Genoa (2022−2023)
Release date	7 July 2020 (4 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	$499	$5,225

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 3900XT has 234% better value for money than EPYC 9454.

Detailed specifications

Ryzen 9 3900XT and EPYC 9454 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	12 (Dodeca-Core)	48 (Octatetraconta-Core)
Threads	24	96
Base clock speed	3.8 GHz	2.75 GHz
Boost clock speed	4.7 GHz	3.8 GHz
Multiplier	no data	27.5
L1 cache	96K (per core)	64K (per core)
L2 cache	512K (per core)	1 MB (per core)
L3 cache	64 MB	256 MB (shared)
Chip lithography	7 nm, 12 nm	5 nm, 6 nm
Die size	74 mm2	8x 72 mm2
Maximum case temperature (TCase)	95 °C	no data
Number of transistors	3,800 million	52,560 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 3900XT and EPYC 9454 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	AM4	SP5
Power consumption (TDP)	105 Watt	290 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900XT and EPYC 9454. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900XT and EPYC 9454 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900XT and EPYC 9454. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800
Maximum memory size	128 GB	6 TiB
Max memory channels	2	no data
Maximum memory bandwidth	51.196 GB/s	460.8 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900XT and EPYC 9454.

PCIe version	4.0	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.

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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.

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Pros & cons summary

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Performance score	20.56	60.17
Recency	7 July 2020	10 November 2022
Physical cores	12	48
Threads	24	96
Chip lithography	7 nm	5 nm
Power consumption (TDP)	105 Watt	290 Watt

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Should you still have questions on choice between Ryzen 9 3900XT and EPYC 9454, ask them in Comments section, and we shall answer.

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