AMD Radeon Instinct MI455X vs AMD Radeon Pro VII
GPU · Specs Compare
Graphics Card
Release Date
Jul 2026
May 2020
Generation
Radeon Instinct
Radeon Pro Vega
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1000 MHz
1400 MHz
Boost Clock
2400 MHz
1700 MHz
Memory Clock
1900 MHz
1000 MHz
Memory
Memory Size
432GB
16GB
Memory Type
HBM4
HBM2
Memory Bus
24576bit
4096bit
Bandwidth
23.3TB/s
1020GB/s
Render Config
Compute Units
256
60
Shading Units
32768
3840
TMUs
1024
240
ROPs
0
64
L1 Cache
32 KB (per CU)
16 KB (per CU)
L2 Cache
192 MB
4 MB
Theoretical Performance
Pixel Rate
0 MPixel/s
108.8 GPixel/s
Texture Rate
2457.6 GTexel/s
408.0 GTexel/s
FP16 (half)
157.3 TFLOPS
26.11 TFLOPS
FP32 (float)
157.3 TFLOPS
13.06 TFLOPS
FP64 (double)
2.458 TFLOPS
6.528 TFLOPS
Graphics Processor
GPU Name
MI450 256CU
Vega 20
Architecture
CDNA 5.0
GCN 5.1
Foundry
TSMC
TSMC
Process Size
2 nm
7 nm
Transistors
320 billion
13.23 billion
Die Size
Unknown
331 mm²
GPU Variant
—
Vega 20 GLXT WS(215-0914026)
Board Design
TDP
2300W
250W
Suggested PSU
2700 W
600 W
Outputs
No outputs
6x mini-DisplayPort 1.4a
Power Connectors
None
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
N/A
12 (12_1)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.3
Shader Model
N/A
6.7
Benchmark
3DMark Time Spy
—
8,984
3DMark Time Spy Extreme
—
4,369
Blender
—
3,343
▲ Specs Compare
Data sourced from official specifications and benchmark tests.