AMD Radeon HD 6970 X2 vs AMD Radeon Instinct MI455X
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Jul 2026
Generation
Northern Islands
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 6.0 x16
Clock Speeds
Memory Clock
1375 MHz
1900 MHz
Base Clock
—
1000 MHz
Boost Clock
—
2400 MHz
Memory
Memory Size
2GB
432GB
Memory Type
GDDR5
HBM4
Memory Bus
256bit
24576bit
Bandwidth
176.0GB/s
23.3TB/s
Render Config
Compute Units
24
256
Shading Units
1536
32768
TMUs
96
1024
ROPs
32
0
L1 Cache
8 KB (per CU)
32 KB (per CU)
L2 Cache
512 KB
192 MB
Theoretical Performance
Pixel Rate
28.16 GPixel/s
0 MPixel/s
Texture Rate
84.48 GTexel/s
2457.6 GTexel/s
FP32 (float)
2.703 TFLOPS
157.3 TFLOPS
FP16 (half)
—
157.3 TFLOPS
FP64 (double)
—
2.458 TFLOPS
Graphics Processor
GPU Name
Antilles
MI450 256CU
GPU Variant
Antilles XT(215-0807027)
—
Architecture
TeraScale 3
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
40 nm
2 nm
Transistors
2.64 billion
320 billion
Die Size
389 mm²
Unknown
Board Design
TDP
375W
2300W
Suggested PSU
750 W
2700 W
Outputs
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
3x 8-pin
None
Graphics Features
DirectX
11.2 (11_0)
N/A
OpenGL
4.4
N/A
OpenCL
1.2
3.0
Vulkan
N/A
N/A
Shader Model
5.0
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.