GeForce GTX 660M and Radeon HD 6670 - video card comparison
Passmark - benchmark score GeForce GTX 660M vs Radeon HD 6670
GeForce GTX 660M
1478
Radeon HD 6670
752
GeForce GTX 660M
Radeon HD 6670
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
N13E-GE
Turks
Market segment
Laptop
Desktop
Release date
March 2012
April 2011
Bus support
PCI Express 2.0, PCI Express 3.0
PCIe 2.0 x16
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
-
None
SLI options
+
-
Boost clock speed
950 MHz
800 MHz
Core clock speed
835 MHz
-
CUDA cores
384
-
Floating-point performance
729.6 gflops
768.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
716 million
Pipelines / CUDA cores
384
480
Power consumption (TDP)
50 Watt
66 Watt
Texture fill rate
30.4 billion/sec
19.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128bit
128 Bit
Memory clock speed
2000 MHz
1050 MHz
Memory bandwidth
64.0 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
Eyefinity
-
1
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DisplayPort support
-
-
DirectX
12 API
DirectX® 11
CUDA
+
-
Mantle
-
-
OpenCL
1.1
1.2
OpenGL
4.5
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
Optimus
+
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-