AMD Radeon Pro 555X: GPU Specs & Benchmarks

The Radeon Pro 555X is a graphics card by AMD, built on the 14 nm process and based on the Polaris 21 graphics processor (GPU). The video card specifications and performance tests (benchmarks) are listed below.

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Graphics Processor (GPU)

GPU Name
Polaris 21
Model number
Polaris 21 PRO
Architecture
GCN 4.0
Foundry
GlobalFoundries
Process Size
14 nm
Transistors
3,000 million
Die Size
123 mm²

Graphics Card

Release Date
Jul 16th, 2018
Family
Radeon Pro Mac
(500X Series)
Production
Active
Bus Interface
PCIe 3.0 x8

Memory

Memory Size
4 GB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
94.08 GB/s

Performance

Pixel fillrate
14.51 GPixel/s
Texture fillrate
43.54 GTexel/s
FP16 (half) performance
1,393 GFLOPS (1:1)
FP32 (float) performance
1,393 GFLOPS
FP64 (double) performance
87.07 GFLOPS (1:16)

Clock Speeds

Memory Clock
1470 MHz
5.9 Gbps effective
GPU Clock
907 MHz

Render Config

Shading Units
768
TMUs
48
ROPs
16
Compute Units
12
L1 Cache
16 KB (per CU)
L2 Cache
1024 KB

Board Design

Slot Width
IGP
Thermal design power (TDP)
75 W
Display Connectors
No outputs
Power Connectors
None

API support

DirectX
12 (12_0)
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
Shader Model
6.4
Radeon Pro 555X
AMD Radeon Pro 555X: GPU Specs & Benchmarks