GeForce GTX 880M and Radeon R9 M390 - video card comparison
GeForce GTX 880M
Radeon R9 M390
Architecture
Kepler (2012−2018)
GCN (2011−2017)
GPU code name
N15E-GX-A2
Pitcairn
Market segment
Laptop
Laptop
Release date
March 2014
June 2015
Bus support
PCI Express 2.0, PCI Express 3.0
PCIe 3.0
Interface
MXM-B (3.0)
-
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
993 MHz
-
Core clock speed
954 MHz
-
CUDA cores
1536
-
Floating-point performance
3,050 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
5000 Million
Pipelines / CUDA cores
1536
1024
Power consumption (TDP)
122 Watt
-
Texture fill rate
127.1
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
Up to 2500 MHz
-
Memory bandwidth
160.0 GB/s
-
Shared memory
-
-
Standard memory configuration
GDDR5
-
Display Connectors
No outputs
-
eDP 1.2 signal support
Up to 3840x2160
-
LVDS signal support
Up to 1920x1200
-
Eyefinity
-
1
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)
DirectX® 12
CUDA
+
-
Mantle
-
+
OpenCL
1.1
Not Listed
OpenGL
4.5
4.4
Shader Model
5.1
-
Vulkan
1.1.126
-
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
H.264, VC1, MPEG2 1080p video decoder
+
-
HD3D
-
+
Optimus
+
-
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
TrueHD and DTS-HD audio bitstreaming
+
-
ZeroCore
-
+