AMD Radeon RX 640 Mobile vs NVIDIA RTX A4000H
GPU · Specs Compare
Graphics Card
Release Date
May 2019
Apr 2021
Generation
Mobility Radeon
Quadro Ampere
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x16
Clock Speeds
Base Clock
1082 MHz
735 MHz
Boost Clock
1218 MHz
1560 MHz
Memory Clock
1500 MHz
1750 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
64bit
256bit
Bandwidth
48.00GB/s
448.0GB/s
Render Config
Compute Units
10
—
Shading Units
640
6144
TMUs
40
192
ROPs
16
96
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
4 MB
SM Count
—
48
Tensor Cores
—
192
RT Cores
—
48
Theoretical Performance
Pixel Rate
19.49 GPixel/s
149.8 GPixel/s
Texture Rate
48.72 GTexel/s
299.5 GTexel/s
FP16 (half)
1.559 TFLOPS
19.17 TFLOPS
FP32 (float)
1.559 TFLOPS
19.17 TFLOPS
FP64 (double)
97.44 GFLOPS
299.5 GFLOPS
Graphics Processor
GPU Name
Polaris 23
GA104
GPU Variant
Polaris 23 XT
GA104-???-A1
Architecture
GCN 4.0
Ampere
Foundry
GlobalFoundries
Samsung
Process Size
14 nm
8 nm
Transistors
2.2 billion
17.4 billion
Die Size
103 mm²
392 mm²
Board Design
TDP
50W
140W
Outputs
No outputs
4x DisplayPort 1.4a
Power Connectors
None
1x 6-pin
Suggested PSU
—
300 W
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.2
1.3
Shader Model
6.4
6.7
CUDA
—
8.6
▲ Specs Compare
Data sourced from official specifications and benchmark tests.