NVIDIA GeForce RTX 4090 Max-Q vs AMD Radeon RX 455 OEM
GPU · Specs Compare
Graphics Card
Release Date
Jan 2023
Jun 2016
Generation
GeForce 40 Mobile
Arctic Islands
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
930 MHz
—
Boost Clock
1455 MHz
—
Memory Clock
1750 MHz
1625 MHz
Memory
Memory Size
16GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
128bit
Bandwidth
448.0GB/s
104.0GB/s
Render Config
SM Count
76
—
Shading Units
9728
768
TMUs
304
48
ROPs
112
16
Tensor Cores
304
—
RT Cores
76
—
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
64 MB
256 KB
Compute Units
—
12
Theoretical Performance
Pixel Rate
163.0 GPixel/s
16.80 GPixel/s
Texture Rate
442.3 GTexel/s
50.40 GTexel/s
FP16 (half)
28.31 TFLOPS
—
FP32 (float)
28.31 TFLOPS
1.613 TFLOPS
FP64 (double)
442.3 GFLOPS
100.8 GFLOPS
Graphics Processor
GPU Name
AD103
Tobago
GPU Variant
GN21-X11
Tobago PRO(215-0875010)
Architecture
Ada Lovelace
GCN 2.0
Foundry
TSMC
TSMC
Process Size
4 nm
28 nm
Transistors
45.9 billion
2.08 billion
Die Size
379 mm²
160 mm²
Board Design
TDP
80W
100W
Outputs
Portable Device Dependent
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
—
300 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.3
1.2
CUDA
8.9
—
Shader Model
6.7
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.