GeForce GTX 660 and Mobility Radeon HD 3650 - video card comparison
GeForce GTX 660
Mobility Radeon HD 3650
Architecture
Kepler (2012−2018)
RV6xx (2007−2010)
GPU code name
GK106
M86
Market segment
Desktop
Laptop
Release date
September 2012
January 2008
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
MXM-II
Supplementary power connectors
One 6-pin
-
SLI options
+
-
Boost clock speed
1033 MHz
-
Core clock speed
980 MHz
600 MHz
CUDA cores
960
-
Floating-point performance
1,981 gflops
120 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
2,540 million
378 million
Pipelines / CUDA cores
960
120
Power consumption (TDP)
140 Watt
30 Watt
Texture fill rate
78.4 billion/sec
4.000
Memory type
GDDR5
DDR2/GDDR3/GDDR4
Maximum RAM amount
2 GB
512 MB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
700 MHz
Memory bandwidth
144.2 GB/s
22.4 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
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
10.1 (10_1)
CUDA
+
-
OpenCL
1.2
N/A
OpenGL
4.3
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-