AMD Radeon R9 390X vs AMD Radeon R9 380X
GPU · Specs Compare
Graphics Card
Release Date
Jun 2015
Nov 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
1425 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
256bit
Bandwidth
384.0GB/s
182.4GB/s
Render Config
Compute Units
44
32
Shading Units
2816
2048
TMUs
176
128
ROPs
64
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
512 KB
Theoretical Performance
Pixel Rate
67.20 GPixel/s
31.04 GPixel/s
Texture Rate
184.8 GTexel/s
124.2 GTexel/s
FP32 (float)
5.914 TFLOPS
3.973 TFLOPS
FP64 (double)
739.2 GFLOPS
248.3 GFLOPS
FP16 (half)
—
3.973 TFLOPS
Graphics Processor
GPU Name
Grenada
Antigua
GPU Variant
Grenada XT(215-0880004)
Antigua XT(215-0877016)
Architecture
GCN 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
6.2 billion
5 billion
Die Size
438 mm²
366 mm²
Board Design
TDP
275W
190W
Suggested PSU
600 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-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
Benchmark
3DMark Time Spy
—
3,011
3DMark Time Spy Extreme
—
1,294
▲ Specs Compare
Data sourced from official specifications and benchmark tests.