AMD Radeon R9 390X vs AMD Radeon RX 560 896SP
GPU Specs Compare
Graphics Card
Release Date
Jun 2015
Jul 2017
Generation
Pirate Islands
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Memory Clock
1500 MHz
1750 MHz
Base Clock
-
1090 MHz
Boost Clock
-
1175 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
128bit
Bandwidth
384.0GB/s
112.0GB/s
Render Config
Compute Units
44
14
Shading Units
2816
896
TMUs
176
56
ROPs
64
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
1024 KB
Theoretical Performance
Pixel Rate
67.20 GPixel/s
18.80 GPixel/s
Texture Rate
184.8 GTexel/s
65.80 GTexel/s
FP32 (float)
5.914 TFLOPS
2.106 TFLOPS
FP64 (double)
739.2 GFLOPS
131.6 GFLOPS
FP16 (half)
-
2.106 TFLOPS
Graphics Processor
GPU Name
Grenada
Polaris 21
GPU Variant
Grenada XT(215-0880004)
Polaris 21 XL
Architecture
GCN 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
6.2 billion
3 billion
Die Size
438 mm²
123 mm²
Board Design
TDP
275W
45W
Suggested PSU
600 W
200 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Power Connectors
1x 6-pin + 1x 8-pin
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.2
Shader Model
6.3
6.4