CPU

AMD Ryzen 9 PRO 9955

AMD Released 2026-06-01 33 Specifications

About

The AMD Ryzen 9 PRO 9955 is a server-class CPU manufactured by AMD, built on AMD's officially announced 6 nm process technology, released in June 2026. This processor features a 12-core 24-thread architecture design, with a base clock of 3.4 GHz and a maximum boost clock reaching up to 5.4 GHz, equipped with 64 MB of L3 cache, utilizing the AMD Socket AM5 socket. Overall specifications are targeted at server application scenarios.

Specifications

General Parameters

Release Date

Jun 2026

Manufacturer

AMD

Type

Server

Core Architecture

Granite Ridge

Integrated Graphics

Radeon Graphics

Generation

Ryzen 9 (Zen 5 (Granite Ridge))

Package

Transistor Count

16.63 billions

Manufacturing Process

4 nm

Socket

AMD Socket AM5

Power Consumption

120 W

Peak Operating Temperature

95°C

Foundry

TSMC

Die Size

2x70.6 mm²

I/O Process Size

6 nm

I/O Die Size

122 mm²

Package

FC-LGA1718

CPU Performance

Performance Core Base Frequency

3.4 GHz

Performance Core Turbo Frequency

5.4 GHz

Total Core Count

Total Thread Count

Bus Frequency

100 MHz

Multiplier

34.0

L1 Cache

80 KB per core

L2 Cache

1 MB per core

L3 Cache

64 MB

Unlocked Multiplier

SMP

Memory Parameters

Memory Types

DDR5-5600

Max Memory Channels

Max Memory Bandwidth

89.6 GB/s

ECC Memory Support

Yes

Miscellaneous

PCIe Version

PCIe Lanes

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