GeForce GTX 660 and GeForce GTX 950 - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce GTX 950
GeForce GTX 660
4119
GeForce GTX 950
5498
GeForce GTX 660
GeForce GTX 950
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK106
GM206
Market segment
Desktop
Desktop
Release date
September 2012
August 2015
Bus support
PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Recommended system power (PSU)
-
350 Watt
Supplementary power connectors
One 6-pin
1x 6-pins
SLI options
+
+
Boost clock speed
1033 MHz
1188 MHz
Core clock speed
980 MHz
1024 MHz
CUDA cores
960
768
Floating-point performance
1,981 gflops
1,825 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
2,940 million
Pipelines / CUDA cores
960
768
Power consumption (TDP)
140 Watt
90 Watt
Texture fill rate
78.4 billion/sec
49.2 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
6.6 GB/s
Memory bandwidth
144.2 GB/s
105.6 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
Multi monitor support
4 displays
4 displays
HDMI
+
+
HDCP
+
+
Maximum VGA resolution
2048x1536
2048x1536
G-SYNC support
-
+
Audio input for HDMI
Internal
Internal
DirectX
12 (11_0)
12 (12_1)
CUDA
+
+
OpenCL
1.2
1.2
OpenGL
4.3
4.5
Shader Model
5.1
6.4
Vulkan
1.1.126
1.1.126
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
GameStream
-
+
GameWorks
-
+
GeForce ShadowPlay
-
+
GPU Boost
-
2.0