AMD Radeon R9 M390X vs AMD Radeon R9 380
GPU Specs Compare
Graphics Card
Release Date
May 2015
Jun 2015
Generation
Crystal System
Pirate Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1375 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
176.0GB/s
Render Config
Compute Units
32
28
Shading Units
2048
1792
TMUs
128
112
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
23.14 GPixel/s
31.04 GPixel/s
Texture Rate
92.54 GTexel/s
108.6 GTexel/s
FP16 (half)
2.961 TFLOPS
3.476 TFLOPS
FP32 (float)
2.961 TFLOPS
3.476 TFLOPS
FP64 (double)
185.1 GFLOPS
217.3 GFLOPS
Graphics Processor
GPU Name
Amethyst
Antigua
GPU Variant
Amethyst XT
Antigua PRO(215-0877000)
Architecture
GCN 3.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
5 billion
Die Size
366 mm²
366 mm²
Board Design
TDP
75W
190W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
2x 6-pin
Suggested PSU
-
450 W
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
-
2,757
3DMark Time Spy Extreme
-
1,239