
Radeon R9 M390X and GeForce GTX 660 Ti - video card comparison
Passmark - benchmark score Radeon R9 M390X vs GeForce GTX 660 Ti
Radeon R9 M390X
3705
GeForce GTX 660 Ti
4547
Radeon R9 M390X
GeForce GTX 660 Ti
Architecture
GCN 3 (2014−2016)
Kepler (2012−2018)
GPU code name
Amethyst (XT) / Tonga
GK104
Market segment
Laptop
Desktop
Release date
June 2015
August 2012
Bus support
PCIe 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
Two 6-pin
SLI options
-
+
Boost clock speed
-
980 MHz
Core clock speed
723 MHz
915 MHz
CUDA cores
-
1344
Floating-point performance
2,961 gflops
2,459.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
3,540 million
Pipelines / CUDA cores
2048
1344
Power consumption (TDP)
100 Watt
150 Watt
Texture fill rate
92.54
102.5 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
192-bit GDDR5
Memory clock speed
-
6.0 GB/s
Memory bandwidth
160.0 GB/s
144.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support
-
4 displays
Eyefinity
1
-
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
DirectX® 12
12 (11_0)
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.3
Shader Model
6.3
5.1
Vulkan
+
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-