AMD Radeon Instinct MI355X vs NVIDIA GeForce RTX 5080 Mobile
GPU Specs Compare
Graphics Card
Release Date
Jun 2025
Apr 2025
Generation
Radeon Instinct
GeForce 50 Mobile
Type
Professional
Mobile
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1000 MHz
975 MHz
Boost Clock
2400 MHz
1500 MHz
Memory Clock
2000 MHz
1750 MHz
Memory
Memory Size
288GB
16GB
Memory Type
HBM3e
GDDR7
Memory Bus
8192bit
256bit
Bandwidth
8.19TB/s
896.0GB/s
Render Config
Compute Units
256
-
Shading Units
16384
7680
TMUs
1024
240
ROPs
0
96
Tensor Cores
1216
240
L1 Cache
32 KB (per CU)
128 KB (per SM)
L2 Cache
32 MB
64 MB
L3 Cache
256 MB
-
SM Count
-
60
RT Cores
-
60
Theoretical Performance
Pixel Rate
0 MPixel/s
144.0 GPixel/s
Texture Rate
2457.6 GTexel/s
360.0 GTexel/s
FP16 (half)
78.64 TFLOPS
23.04 TFLOPS
FP32 (float)
78.64 TFLOPS
23.04 TFLOPS
FP64 (double)
39.32 TFLOPS
360.0 GFLOPS
Graphics Processor
GPU Name
MI350 256CU
GB203
Architecture
CDNA 4.0
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
3 nm
5 nm
Transistors
185 billion
45.6 billion
Die Size
Unknown
378 mm²
Board Design
TDP
1400W
80W
Suggested PSU
1800 W
550 W
Outputs
No outputs
Portable Device Dependent
Power Connectors
None
None
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.4
Shader Model
N/A
6.8
CUDA
-
12.0