GeForce GTX 680MX Mac Edition and Radeon R9 M395 Mac Edition - video card comparison
GeForce GTX 680MX Mac Edition
Radeon R9 M395 Mac Edition
Architecture
Kepler (2012−2018)
GCN 2.0 (2013−2017)
GPU code name
GK104
Grenada
Market segment
Desktop
Desktop
Release date
October 2012
May 2015
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
-
None
Core clock speed
719 MHz
834 MHz
Floating-point performance
2,209 gflops
2,989 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
6,200 million
Pipelines / CUDA cores
1536
1792
Power consumption (TDP)
122 Watt
250 Watt
Texture fill rate
92.03
93.41
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5000 MHz
5460 MHz
Memory bandwidth
160.0 GB/s
174.7 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (12_0)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.1.126
1.2.131