NVIDIA GeForce RTX 4090 Max-Q vs AMD Radeon RX 640 Mobile
GPU Specs Compare
Graphics Card
Release Date
Jan 2023
May 2019
Generation
GeForce 40 Mobile
Mobility Radeon
Type
Mobile
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
930 MHz
1082 MHz
Boost Clock
1455 MHz
1218 MHz
Memory Clock
1750 MHz
1500 MHz
Memory
Memory Size
16GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
64bit
Bandwidth
448.0GB/s
48.00GB/s
Render Config
SM Count
76
-
Shading Units
9728
640
TMUs
304
40
ROPs
112
16
Tensor Cores
304
-
RT Cores
76
-
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
64 MB
512 KB
Compute Units
-
10
Theoretical Performance
Pixel Rate
163.0 GPixel/s
19.49 GPixel/s
Texture Rate
442.3 GTexel/s
48.72 GTexel/s
FP16 (half)
28.31 TFLOPS
1.559 TFLOPS
FP32 (float)
28.31 TFLOPS
1.559 TFLOPS
FP64 (double)
442.3 GFLOPS
97.44 GFLOPS
Graphics Processor
GPU Name
AD103
Polaris 23
GPU Variant
GN21-X11
Polaris 23 XT
Architecture
Ada Lovelace
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
4 nm
14 nm
Transistors
45.9 billion
2.2 billion
Die Size
379 mm²
103 mm²
Board Design
TDP
80W
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
8.9
-
Shader Model
6.7
6.4