AMD Radeon Instinct MI455X vs AMD Radeon RX 460 Mobile
GPU Specs Compare
Graphics Card
Release Date
Jul 2026
Aug 2016
Generation
Radeon Instinct
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 6.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
1000 MHz
1000 MHz
Boost Clock
2400 MHz
1180 MHz
Memory Clock
1900 MHz
1250 MHz
Memory
Memory Size
432GB
4GB
Memory Type
HBM4
GDDR5
Memory Bus
24576bit
128bit
Bandwidth
23.3TB/s
80.00GB/s
Render Config
Compute Units
256
14
Shading Units
32768
896
TMUs
1024
56
ROPs
0
16
L1 Cache
32 KB (per CU)
16 KB (per CU)
L2 Cache
192 MB
1024 KB
Theoretical Performance
Pixel Rate
0 MPixel/s
18.88 GPixel/s
Texture Rate
2457.6 GTexel/s
66.08 GTexel/s
FP16 (half)
157.3 TFLOPS
2.115 TFLOPS
FP32 (float)
157.3 TFLOPS
2.115 TFLOPS
FP64 (double)
2.458 TFLOPS
132.2 GFLOPS
Graphics Processor
GPU Name
MI450 256CU
Baffin
Architecture
CDNA 5.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
2 nm
14 nm
Transistors
320 billion
3 billion
Die Size
Unknown
123 mm²
GPU Variant
-
Baffin XT
Board Design
TDP
2300W
55W
Suggested PSU
2700 W
-
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
N/A
12 (12_0)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.2
Shader Model
N/A
6.4