GeForce GTX 880M and Radeon R9 M395X Mac Edition - video card comparison
GeForce GTX 880M
Radeon R9 M395X Mac Edition
Architecture
Kepler (2012−2018)
GCN 3.0 (2014−2017)
GPU code name
N15E-GX-A2
Amethyst
Market segment
Laptop
Desktop
Release date
March 2014
May 2015
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
None
SLI options
+
-
Boost clock speed
993 MHz
-
Core clock speed
954 MHz
909 MHz
CUDA cores
1536
-
Floating-point performance
3,050 gflops
3,723 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
5,000 million
Pipelines / CUDA cores
1536
2048
Power consumption (TDP)
122 Watt
250 Watt
Texture fill rate
127.1
116.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
Up to 2500 MHz
5460 MHz
Memory bandwidth
160.0 GB/s
174.7 GB/s
Shared memory
-
-
Standard memory configuration
GDDR5
-
Display Connectors
No outputs
No outputs
eDP 1.2 signal support
Up to 3840x2160
-
LVDS signal support
Up to 1920x1200
-
VGA аnalog display support
Up to 2048x1536
-
DisplayPort Multimode (DP++) support
Up to 3840x2160
-
HDCP content protection
+
-
HDMI
+
-
7.1 channel HD audio on HDMI
+
-
DirectX
12 (11_0)
12 (12_0)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.3
Vulkan
1.1.126
1.2.131
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
TrueHD and DTS-HD audio bitstreaming
+
-