AMD Radeon Pro Vega 20 vs NVIDIA RTX A4000
GPU Specs Compare
Graphics Card
Release Date
Nov 2018
Apr 2021
Generation
Radeon Pro Mac
Quadro Ampere
Type
Mobile
Professional
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
815 MHz
735 MHz
Boost Clock
1283 MHz
1560 MHz
Memory Clock
740 MHz
1750 MHz
Memory
Memory Size
4GB
16GB
Memory Type
HBM2
GDDR6
Memory Bus
1024bit
256bit
Bandwidth
189.4GB/s
448.0GB/s
Render Config
Compute Units
20
-
Shading Units
1280
6144
TMUs
80
192
ROPs
32
96
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
1024 KB
4 MB
SM Count
-
48
Tensor Cores
-
192
RT Cores
-
48
Theoretical Performance
Pixel Rate
41.06 GPixel/s
149.8 GPixel/s
Texture Rate
102.6 GTexel/s
299.5 GTexel/s
FP16 (half)
6.569 TFLOPS
19.17 TFLOPS
FP32 (float)
3.284 TFLOPS
19.17 TFLOPS
FP64 (double)
205.3 GFLOPS
299.5 GFLOPS
Graphics Processor
GPU Name
Vega 12
GA104
GPU Variant
Vega 12 XTA
GA104-875-A1
Architecture
GCN 5.0
Ampere
Foundry
GlobalFoundries
Samsung
Process Size
14 nm
8 nm
Transistors
Unknown
17.4 billion
Die Size
Unknown
392 mm²
Board Design
TDP
100W
140W
Outputs
No outputs
4x DisplayPort 1.4a
Suggested PSU
-
300 W
Power Connectors
-
1x 6-pin
Graphics Features
DirectX
12 (12_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.2
1.3
Shader Model
6.3
6.7
CUDA
-
8.6
📊 Benchmark
3DMark Time Spy
2,596
11,079
3DMark Time Spy Extreme
1,211
5,367
OctaneBench
-
352