AMD Radeon R9 M385X vs AMD Radeon Instinct MI455X
GPU Specs Compare
Graphics Card
Release Date
May 2015
Jul 2026
Generation
Gem System
Radeon Instinct
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
1000 MHz
1000 MHz
Boost Clock
1100 MHz
2400 MHz
Memory Clock
1200 MHz
1900 MHz
Memory
Memory Size
4GB
432GB
Memory Type
GDDR5
HBM4
Memory Bus
128bit
24576bit
Bandwidth
76.80GB/s
23.3TB/s
Render Config
Compute Units
14
256
Shading Units
896
32768
TMUs
56
1024
ROPs
16
0
L1 Cache
16 KB (per CU)
32 KB (per CU)
L2 Cache
256 KB
192 MB
Theoretical Performance
Pixel Rate
17.60 GPixel/s
0 MPixel/s
Texture Rate
61.60 GTexel/s
2457.6 GTexel/s
FP32 (float)
1.971 TFLOPS
157.3 TFLOPS
FP64 (double)
123.2 GFLOPS
2.458 TFLOPS
FP16 (half)
-
157.3 TFLOPS
Graphics Processor
GPU Name
Strato
MI450 256CU
GPU Variant
Strato XT
-
Architecture
GCN 2.0
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
28 nm
2 nm
Transistors
2.08 billion
320 billion
Die Size
160 mm²
Unknown
Board Design
TDP
Unknown
2300W
Outputs
Portable Device Dependent
No outputs
Suggested PSU
-
2700 W
Power Connectors
-
None
Graphics Features
DirectX
12 (12_0)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.2.170
N/A
Shader Model
6.5
N/A