AMD Radeon R9 M385 vs AMD Radeon R9 M290X Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Nov 2014
Generation
Gem System
Crystal System
Type
Mobile
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
900 MHz
850 MHz
Boost Clock
1000 MHz
975 MHz
Memory Clock
1200 MHz
1365 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
76.80GB/s
174.7GB/s
Render Config
Compute Units
14
16
Shading Units
896
1024
TMUs
56
64
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
16.00 GPixel/s
31.20 GPixel/s
Texture Rate
56.00 GTexel/s
62.40 GTexel/s
FP32 (float)
1.792 TFLOPS
1.997 TFLOPS
FP64 (double)
112.0 GFLOPS
124.8 GFLOPS
Graphics Processor
GPU Name
Strato
Pitcairn
GPU Variant
Strato XT
Pitcairn PRO(215-0828062)
Architecture
GCN 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
2.8 billion
Die Size
160 mm²
212 mm²
Board Design
TDP
Unknown
80W
Outputs
Portable Device Dependent
No outputs
Power Connectors
—
None
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.2.170
1.2
Shader Model
6.5
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.