Radeon Pro 555X
General
ManufacturerAMD
SeriesRadeon Pro Mac(500X Series)
GPU NamePolaris 21
ArchitectureGCN 4.0
GenerationRadeon Pro Mac(500X Series)
Release DateJul 2018
Bus InterfacePCIe 3.0 x8
Process & Die
FoundryGlobalFoundries
Process Size14 nm
Transistors3,000 M
Transistor Density24,400 K/mm²
Die Size123 mm²
Chip PackageBGA-769
Clock Speeds
Base Clock907 MHz
Boost Clock907 MHz
Memory
VRAM4 GB
Memory TypeGDDR5
Memory Clock1,470 MHz
Memory Bus128-bit
Bandwidth94.08 GB/s
Processing Units
Shading Units768
TMUs48
ROPs16
SMs0
Tensor Cores0
RT Cores0
Cache
L1 Cache16 KB
L2 Cache1 MB
Power & Thermals
TDP75 W
Power ConnectorsNone
Dimensions
Outputs
API Support
DirectX12.0
OpenGL4.6
Vulkan1.3
OpenCL2.1
Shader Model6.7
Theoretical Performance
Pixel Rate14.51 GP/s
Texture Rate43.54 GT/s
FP16 (Half)1,393.2 GFLOPS
FP32 (Single)1,393.2 GFLOPS
FP64 (Double)87.07 GFLOPS
External
TechPowerUpView →
Other Radeon Pro Mac(500X Series) Models