AMD Radeon R9 M290X vs AMD Radeon R9 M295X Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Jan 2014
Nov 2014
Generation
Gem System
Crystal System
Type
Mobile
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
850 MHz
—
Boost Clock
900 MHz
—
Memory Clock
1200 MHz
1362 MHz
Memory
Memory Size
4GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
174.3GB/s
Render Config
Compute Units
20
32
Shading Units
1280
2048
TMUs
80
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
27.20 GPixel/s
Texture Rate
72.00 GTexel/s
108.8 GTexel/s
FP32 (float)
2.304 TFLOPS
3.482 TFLOPS
FP64 (double)
144.0 GFLOPS
217.6 GFLOPS
FP16 (half)
—
3.482 TFLOPS
Graphics Processor
GPU Name
Neptune
Amethyst
GPU Variant
Neptune XT(216-0847000)
Amethyst XT
Architecture
GCN 1.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
5 billion
Die Size
212 mm²
366 mm²
Board Design
TDP
100W
250W
Outputs
Portable Device Dependent
No outputs
Power Connectors
None
—
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1 (1.2)
2.0
Vulkan
1.2.170
1.2
Shader Model
6.5 (5.1)
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.