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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
+
-