Radeon Pro Vega 20 vs Radeon Pro 555
We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro Vega 20 and 2GB VRAM Radeon Pro 555 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon Pro Vega 20 Advantages
Released 1 years and 5 months late
Boost Clock1283MHz
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (189.4GB/s vs 81.60GB/s)
512 additional rendering cores
Radeon Pro 555 Advantages
Lower TDP (75W vs 100W)
Score
Benchmark
FP32 (float)
Radeon Pro Vega 20
+151%
3284
Radeon Pro 555
1306
Graphics Card
Nov 2018
Release Date
Jun 2017
Radeon Pro Mac
Generation
Radeon Pro Mac
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
815 MHz
Base Clock
-
1283 MHz
Boost Clock
-
740 MHz
Memory Clock
1275 MHz
Memory
4GB
Memory Size
2GB
HBM2
Memory Type
GDDR5
1024bit
Memory Bus
128bit
189.4GB/s
Bandwidth
81.60GB/s
Render Config
20
Compute Units
12
1280
Shading Units
768
80
TMUs
48
32
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
1024 KB
Theoretical Performance
41.06 GPixel/s
Pixel Rate
13.60 GPixel/s
102.6 GTexel/s
Texture Rate
40.80 GTexel/s
6.569 TFLOPS
FP16 (half)
1306 GFLOPS
3.284 TFLOPS
FP32 (float)
1306 GFLOPS
205.3 GFLOPS
FP64 (double)
81.60 GFLOPS
Board Design
100W
TDP
75W
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
Vega 12
GPU Name
Polaris 21
Vega 12 XTA
GPU Variant
Polaris 21 PRO
GCN 5.0
Architecture
GCN 4.0
GlobalFoundries
Foundry
GlobalFoundries
14 nm
Process Size
14 nm
Unknown
Transistors
3 billion
Unknown
Die Size
123 mm²
Graphics Features
12 (12_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.1
1.2
Vulkan
1.2
6.3
Shader Model
6.4
