Radeon Pro 555X

Workstation GPU

GCN 4.0 Radeon Pro 500 Series Workstation Desktop GDDR5 2018

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At a Glance

Entry Type: Workstation GPU
Architecture: GCN 4.0
Series: Radeon Pro 500 Series
GPU Die: Polaris 21
Launch Date: 2018-07-16
Stream Processors: 768
TMUs: 48
ROPs: 16
Memory: 4 GB GDDR5
Bus Width: 128-bit
TDP/TBP: 75 W
Interface: PCIe 3.0 x8
Data Confidence: Partial

GPU Specs

What do these fields mean?Partial

Identity
Entry Type	Workstation GPU
Official Name	AMD Radeon Pro 555X
Architecture	GCN 4.0
Launch Date	2018-07-16
Core Specs
GPU Die	Polaris 21
Chip Variant / Package	BGA-769
Process Node	GlobalFoundries 14 nm
Transistor Count	3 billion
Die Size	123 mm²
Stream Processors	768
TMUs	48
ROPs	16
Base Clock	907 MHz
Boost Clock	907 MHz
Pixel Fillrate	14.51 GP/s
Texture Fillrate	43.54 GT/s
FP32 Throughput	1.39 TFLOPS
FP16 Throughput	1.39 TFLOPS
FP64 Throughput	0.09 TFLOPS
Memory
Memory Size	4 GB
Memory Type	GDDR5
Memory Bus Width	128-bit
Memory Clock	1,470 MHz
Memory Bandwidth	94.08 GB/s
L2 Cache	1 MB
L1 Cache	16 KB
Board and Display
TDP / TBP	75 W
Interface	PCIe 3.0 x8
Slot Width	IGP
Software
Shader Model	6.7
DirectX Support	DirectX 12.0
Vulkan Support	Vulkan 1.3
OpenGL Support	OpenGL 4.6
OpenCL Support	OpenCL 2.1

This GPU Wiki entry is being expanded and source-checked.

Why It Mattered

This entry is currently a specification record. Historical notes will be added after source review.

Known Issues

Known issues pending source review.

SourcesPartial

Sources reviewed: 2026-06-23

This entry is still being source-checked.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

Verified: core specifications and historical notes have been reviewed against listed sources.
Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
Imported: spec-only imported entry pending editorial source review.
Needs source review: narrative notes are incomplete until reviewed.

Independent reference sources

TechPowerUp GPU SpecsOpen source

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