AMD Radeon R9 M385X vs AMD Radeon RX 580
GPU Specs Compare
Graphics Card
Release Date
May 2015
Apr 2017
Generation
Gem System
Polaris
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1000 MHz
1257 MHz
Boost Clock
1100 MHz
1340 MHz
Memory Clock
1200 MHz
2000 MHz
Memory
Memory Size
4GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
76.80GB/s
256.0GB/s
Render Config
Compute Units
14
36
Shading Units
896
2304
TMUs
56
144
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
2 MB
Theoretical Performance
Pixel Rate
17.60 GPixel/s
42.88 GPixel/s
Texture Rate
61.60 GTexel/s
193.0 GTexel/s
FP32 (float)
1.971 TFLOPS
6.175 TFLOPS
FP64 (double)
123.2 GFLOPS
385.9 GFLOPS
FP16 (half)
-
6.175 TFLOPS
Graphics Processor
GPU Name
Strato
Polaris 20
GPU Variant
Strato XT
Polaris 20 XTX(215-0910038)
Architecture
GCN 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
2.08 billion
5.7 billion
Die Size
160 mm²
232 mm²
Board Design
TDP
Unknown
185W
Outputs
Portable Device Dependent
1x HDMI 2.0b3x DisplayPort 1.4a
Suggested PSU
-
450 W
Power Connectors
-
1x 8-pin
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.2.170
1.3
Shader Model
6.5
6.7