AMD Radeon R9 390X vs AMD Radeon R9 Nano
GPU Specs Compare
Graphics Card
Release Date
Jun 2015
Aug 2015
Generation
Pirate Islands
Pirate Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1500 MHz
500 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
HBM
Memory Bus
512bit
4096bit
Bandwidth
384.0GB/s
512.0GB/s
Render Config
Compute Units
44
64
Shading Units
2816
4096
TMUs
176
256
ROPs
64
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
2 MB
Theoretical Performance
Pixel Rate
67.20 GPixel/s
64.00 GPixel/s
Texture Rate
184.8 GTexel/s
256.0 GTexel/s
FP32 (float)
5.914 TFLOPS
8.192 TFLOPS
FP64 (double)
739.2 GFLOPS
512.0 GFLOPS
FP16 (half)
-
8.192 TFLOPS
Graphics Processor
GPU Name
Grenada
Fiji
GPU Variant
Grenada XT(215-0880004)
Fiji XT CA(215-0862120)
Architecture
GCN 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
6.2 billion
8.9 billion
Die Size
438 mm²
596 mm²
Board Design
TDP
275W
175W
Suggested PSU
600 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 1.4a3x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
1x 8-pin
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