NVIDIA GeForce RTX 4080 SUPER vs AMD Radeon Instinct MI455X
GPU · Specs Compare
Graphics Card
Release Date
Jan 2024
Jul 2026
Generation
GeForce 40
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
2295 MHz
1000 MHz
Boost Clock
2550 MHz
2400 MHz
Memory Clock
1438 MHz
1900 MHz
Memory
Memory Size
16GB
432GB
Memory Type
GDDR6X
HBM4
Memory Bus
256bit
24576bit
Bandwidth
736.3GB/s
23.3TB/s
Render Config
SM Count
80
—
Shading Units
10240
32768
TMUs
320
1024
ROPs
112
0
Tensor Cores
320
—
RT Cores
80
—
L1 Cache
128 KB (per SM)
32 KB (per CU)
L2 Cache
64 MB
192 MB
Compute Units
—
256
Theoretical Performance
Pixel Rate
285.6 GPixel/s
0 MPixel/s
Texture Rate
816.0 GTexel/s
2457.6 GTexel/s
FP16 (half)
52.22 TFLOPS
157.3 TFLOPS
FP32 (float)
52.22 TFLOPS
157.3 TFLOPS
FP64 (double)
816.0 GFLOPS
2.458 TFLOPS
Graphics Processor
GPU Name
AD103
MI450 256CU
GPU Variant
AD103-400-A1
—
Architecture
Ada Lovelace
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
5 nm
2 nm
Transistors
45.9 billion
320 billion
Die Size
379 mm²
Unknown
Board Design
TDP
320W
2300W
Suggested PSU
700 W
2700 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.3
N/A
CUDA
8.9
—
Shader Model
6.8
N/A
Benchmark
3DMark Time Spy
28,304
—
3DMark Time Spy Extreme
14,052
—
OctaneBench
964
—
Blender
9,232
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.