AMD Radeon R9 270 1024SP vs AMD Radeon Instinct MI455X
GPU Specs Compare
Graphics Card
Release Date
Mar 2015
Jul 2026
Generation
Volcanic Islands
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
900 MHz
1000 MHz
Boost Clock
925 MHz
2400 MHz
Memory Clock
1200 MHz
1900 MHz
Memory
Memory Size
2GB
432GB
Memory Type
GDDR5
HBM4
Memory Bus
256bit
24576bit
Bandwidth
153.6GB/s
23.3TB/s
Render Config
Compute Units
16
256
Shading Units
1024
32768
TMUs
64
1024
ROPs
32
0
L1 Cache
16 KB (per CU)
32 KB (per CU)
L2 Cache
512 KB
192 MB
Theoretical Performance
Pixel Rate
29.60 GPixel/s
0 MPixel/s
Texture Rate
59.20 GTexel/s
2457.6 GTexel/s
FP32 (float)
1.894 TFLOPS
157.3 TFLOPS
FP64 (double)
118.4 GFLOPS
2.458 TFLOPS
FP16 (half)
-
157.3 TFLOPS
Graphics Processor
GPU Name
Pitcairn
MI450 256CU
GPU Variant
Pitcairn PRO(215-0828062)
-
Architecture
GCN 1.0
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
28 nm
2 nm
Transistors
2.8 billion
320 billion
Die Size
212 mm²
Unknown
Board Design
TDP
150W
2300W
Suggested PSU
450 W
2700 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_1)
N/A
OpenGL
4.6
N/A
OpenCL
1.2
3.0
Vulkan
1.2
N/A
Shader Model
5.1
N/A