AMD Radeon Instinct MI455X vs NVIDIA CMP 170HX
GPU Specs Compare
Graphics Card
Release Date
Jul 2026
Sep 2021
Generation
Radeon Instinct
Mining GPUs
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x4
Clock Speeds
Base Clock
1000 MHz
1140 MHz
Boost Clock
2400 MHz
1410 MHz
Memory Clock
1900 MHz
1458 MHz
Memory
Memory Size
432GB
16GB
Memory Type
HBM4
HBM2e
Memory Bus
24576bit
4096bit
Bandwidth
23.3TB/s
1493GB/s
Render Config
Compute Units
256
-
Shading Units
32768
4480
TMUs
1024
280
ROPs
0
128
L1 Cache
32 KB (per CU)
192 KB (per SM)
L2 Cache
192 MB
8 MB
SM Count
-
70
Tensor Cores
-
280
Theoretical Performance
Pixel Rate
0 MPixel/s
180.5 GPixel/s
Texture Rate
2457.6 GTexel/s
394.8 GTexel/s
FP16 (half)
157.3 TFLOPS
50.53 TFLOPS
FP32 (float)
157.3 TFLOPS
12.63 TFLOPS
FP64 (double)
2.458 TFLOPS
6.317 TFLOPS
Graphics Processor
GPU Name
MI450 256CU
GA100
Architecture
CDNA 5.0
Ampere
Foundry
TSMC
TSMC
Process Size
2 nm
7 nm
Transistors
320 billion
54.2 billion
Die Size
Unknown
826 mm²
GPU Variant
-
GA100-105F-A1
Board Design
TDP
2300W
250W
Suggested PSU
2700 W
600 W
Outputs
No outputs
No outputs
Power Connectors
None
2x 8-pin
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
Shader Model
N/A
N/A
CUDA
-
8.0