Radeon R9 M390 and GeForce GTX 860M - video card comparison
Radeon R9 M390
GeForce GTX 860M
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Pitcairn
N15P-GX
Market segment
Laptop
Laptop
Release date
June 2015
March 2014
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
-
MXM-B (3.0)
Supplementary power connectors
-
None
SLI options
-
+
Boost clock speed
-
915 MHz
Core clock speed
-
797 MHz
CUDA cores
-
1152 or 640
Floating-point performance
-
1,389 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5000 Million
1,870 million
Pipelines / CUDA cores
1024
640
Power consumption (TDP)
-
75 Watt
Texture fill rate
-
43.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
-
Up to 2500 MHz
Memory bandwidth
-
80.0 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
DirectX® 12
12 (11_0)
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
-
5.1
Vulkan
-
1.1.126
Ansel
-
+
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
+
-