AMD Radeon RX 455 OEM vs AMD Radeon R9 M485X
GPU Specs Compare
Graphics Card
Release Date
Jun 2016
May 2016
Generation
Arctic Islands
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1625 MHz
1250 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
104.0GB/s
160.0GB/s
Render Config
Compute Units
12
32
Shading Units
768
2048
TMUs
48
128
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
16.80 GPixel/s
23.14 GPixel/s
Texture Rate
50.40 GTexel/s
92.54 GTexel/s
FP32 (float)
1.613 TFLOPS
2.961 TFLOPS
FP64 (double)
100.8 GFLOPS
185.1 GFLOPS
FP16 (half)
-
2.961 TFLOPS
Graphics Processor
GPU Name
Tobago
Amethyst
GPU Variant
Tobago PRO(215-0875010)
Amethyst XT
Architecture
GCN 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
5 billion
Die Size
160 mm²
366 mm²
Board Design
TDP
100W
250W
Suggested PSU
300 W
-
Outputs
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.2
1.2
Shader Model
6.3
6.3