AMD Radeon R9 M385X vs AMD Radeon R9 M295X 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
MXM-B (3.0)
Clock Speeds
Base Clock
1000 MHz
—
Boost Clock
1100 MHz
—
Memory Clock
1200 MHz
1362 MHz
Memory
Memory Size
4GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
76.80GB/s
174.3GB/s
Render Config
Compute Units
14
32
Shading Units
896
2048
TMUs
56
128
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
17.60 GPixel/s
27.20 GPixel/s
Texture Rate
61.60 GTexel/s
108.8 GTexel/s
FP32 (float)
1.971 TFLOPS
3.482 TFLOPS
FP64 (double)
123.2 GFLOPS
217.6 GFLOPS
FP16 (half)
—
3.482 TFLOPS
Graphics Processor
GPU Name
Strato
Amethyst
GPU Variant
Strato XT
Amethyst XT
Architecture
GCN 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
5 billion
Die Size
160 mm²
366 mm²
Board Design
TDP
Unknown
250W
Outputs
Portable Device Dependent
No outputs
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.2.170
1.2
Shader Model
6.5
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.