GeForce GTX 660 Ti and Radeon R7 M340 - video card comparison
Passmark - benchmark score GeForce GTX 660 Ti vs Radeon R7 M340
GeForce GTX 660 Ti
4547
Radeon R7 M340
679
GeForce GTX 660 Ti
Radeon R7 M340
Architecture
Kepler (2012−2018)
GCN (2011−2017)
GPU code name
GK104
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
August 2012
June 2015
Bus support
PCI Express 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
Two 6-pin
None
SLI options
+
-
Boost clock speed
980 MHz
1021 MHz
Compute units
-
6
Core clock speed
915 MHz
1021 MHz
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
950 million
Pipelines / CUDA cores
1344
320
Power consumption (TDP)
150 Watt
-
Texture fill rate
102.5 billion/sec
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
1000 MHz
Memory bandwidth
144.2 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
Eyefinity
-
1
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
DirectX® 12
CUDA
+
-
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.3
4.4
Shader Model
5.1
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
-
+