AMD Radeon Instinct MI455X vs AMD Radeon R9 260 OEM
GPU Specs Compare
Graphics Card
Release Date
Jul 2026
Dec 2013
Generation
Radeon Instinct
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1000 MHz
-
Boost Clock
2400 MHz
-
Memory Clock
1900 MHz
1625 MHz
Memory
Memory Size
432GB
1024MB
Memory Type
HBM4
GDDR5
Memory Bus
24576bit
128bit
Bandwidth
23.3TB/s
104.0GB/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
256 KB
Theoretical Performance
Pixel Rate
0 MPixel/s
17.60 GPixel/s
Texture Rate
2457.6 GTexel/s
61.60 GTexel/s
FP16 (half)
157.3 TFLOPS
-
FP32 (float)
157.3 TFLOPS
1.971 TFLOPS
FP64 (double)
2.458 TFLOPS
123.2 GFLOPS
Graphics Processor
GPU Name
MI450 256CU
Bonaire
Architecture
CDNA 5.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
2 nm
28 nm
Transistors
320 billion
2.08 billion
Die Size
Unknown
160 mm²
GPU Variant
-
Bonaire XT(215-0839039)
Board Design
TDP
2300W
85W
Suggested PSU
2700 W
250 W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
1x 6-pin
Graphics Features
DirectX
N/A
12 (12_0)
OpenGL
N/A
4.6
OpenCL
3.0
2.0
Vulkan
N/A
1.2
Shader Model
N/A
6.3