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