AMD Radeon HD 6850 1440SP Edition vs AMD Radeon Instinct MI455X
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Jul 2026
Generation
Northern Islands
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 6.0 x16
Clock Speeds
Memory Clock
1000 MHz
1900 MHz
Base Clock
-
1000 MHz
Boost Clock
-
2400 MHz
Memory
Memory Size
1024MB
432GB
Memory Type
GDDR5
HBM4
Memory Bus
256bit
24576bit
Bandwidth
128.0GB/s
23.3TB/s
Render Config
Compute Units
18
256
Shading Units
1440
32768
TMUs
72
1024
ROPs
32
0
L1 Cache
8 KB (per CU)
32 KB (per CU)
L2 Cache
512 KB
192 MB
Theoretical Performance
Pixel Rate
23.20 GPixel/s
0 MPixel/s
Texture Rate
52.20 GTexel/s
2457.6 GTexel/s
FP32 (float)
2.088 TFLOPS
157.3 TFLOPS
FP64 (double)
417.6 GFLOPS
2.458 TFLOPS
FP16 (half)
-
157.3 TFLOPS
Graphics Processor
GPU Name
Cypress
MI450 256CU
GPU Variant
Cypress PRO(215-0735043)
-
Architecture
TeraScale 2
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
40 nm
2 nm
Transistors
2.154 billion
320 billion
Die Size
334 mm²
Unknown
Board Design
TDP
151W
2300W
Suggested PSU
450 W
2700 W
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
No outputs
Power Connectors
2x 6-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