NVIDIA RTX A4 Mobile vs AMD Radeon RX 640 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Apr 2021
May 2019
Generation
Quadro Ampere-M
Mobility Radeon
Type
Professional
Mobile
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x8
Clock Speeds
Base Clock
1297 MHz
1082 MHz
Boost Clock
1770 MHz
1218 MHz
Memory Clock
1750 MHz
1500 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
64bit
Bandwidth
224.0GB/s
48.00GB/s
Render Config
SM Count
16
—
Shading Units
2048
640
TMUs
64
40
ROPs
32
16
Tensor Cores
64
—
RT Cores
16
—
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
2 MB
512 KB
Compute Units
—
10
Theoretical Performance
Pixel Rate
56.64 GPixel/s
19.49 GPixel/s
Texture Rate
113.3 GTexel/s
48.72 GTexel/s
FP16 (half)
7.250 TFLOPS
1.559 TFLOPS
FP32 (float)
7.250 TFLOPS
1.559 TFLOPS
FP64 (double)
113.3 GFLOPS
97.44 GFLOPS
Graphics Processor
GPU Name
GA107
Polaris 23
Architecture
Ampere
GCN 4.0
Foundry
Samsung
GlobalFoundries
Process Size
8 nm
14 nm
Transistors
8.7 billion
2.2 billion
Die Size
200 mm²
103 mm²
GPU Variant
—
Polaris 23 XT
Board Design
TDP
Unknown
50W
Outputs
Portable Device Dependent
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.3
1.2
CUDA
8.6
—
Shader Model
6.7
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.