EPYC 9455 vs Ryzen 9 4900H

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Primary details

Comparing Ryzen 9 4900H and EPYC 9455 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking644not rated
Place by popularitynot in top-100not in top-100
Market segmentLaptopServer
SeriesAMD Renoir (Ryzen 4000 APU)no data
Power efficiency21.01no data
Architecture codenameRenoir-H (Zen 2) (2020)Turin (2024)
Release date16 March 2020 (4 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)no data$5,412

Detailed specifications

Ryzen 9 4900H and EPYC 9455 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 cores8 (Octa-Core)48 (Octatetraconta-Core)
Threads1696
Base clock speed3.3 GHz3.15 GHz
Boost clock speed4.4 GHz4.4 GHz
Multiplier33no data
L1 cache64 KB (per core)80 KB (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache8 MB (shared)192 MB (shared)
Chip lithography7 nm4 nm
Die size156 mm26x 70.6 mm2
Maximum core temperature105 °Cno data
Number of transistors9,800 million49,890 million
64 bit support++
Windows 11 compatibility+no data

Compatibility

Information on Ryzen 9 4900H and EPYC 9455 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 configuration12
SocketFP6SP5
Power consumption (TDP)54 Watt300 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 4900H and EPYC 9455. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA, SHAno data
AES-NI++
FMA+-
AVX++
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 4900H and EPYC 9455 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 4900H and EPYC 9455. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR5
Maximum memory size64 GBno data
Max memory channels4no data
Maximum memory bandwidth68.27 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon RX Vega 8 (Ryzen 4000/5000) ( - 1750 MHz)N/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 4900H and EPYC 9455.

PCIe version3.05.0
PCI Express lanesno data128

Pros & cons summary


Recency 16 March 2020 10 October 2024
Physical cores 8 48
Threads 16 96
Chip lithography 7 nm 4 nm
Power consumption (TDP) 54 Watt 300 Watt

Ryzen 9 4900H has 455.6% lower power consumption.

EPYC 9455, on the other hand, has an age advantage of 4 years, 500% more physical cores and 500% more threads, and a 75% more advanced lithography process.

We couldn't decide between Ryzen 9 4900H and EPYC 9455. We've got no test results to judge.

Be aware that Ryzen 9 4900H is a notebook processor while EPYC 9455 is a server/workstation one.


Should you still have questions on choice between Ryzen 9 4900H and EPYC 9455, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 4900H
Ryzen 9 4900H
AMD EPYC 9455
EPYC 9455

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