Samsung Series 7

• This series includes the 750 model. It features 3D capabilities that viewers can take advantage of by wearing special glasses. Model 750 TVs are available with a screen size of 46 inches. The model also has a 240 Hz refresh rate, the fastest available in any Samsung LCD model, according to Samsung.com. The refresh rate refers to how quickly the TV can show motion. The 750 model features Samsung's Touch of Color design with a glass deco frame color. The 750 model has 200,000:1 contrast ratio, the highest of any Samsung LCD models. The higher the contrast ratio, the more vivid the display. The TV features four HDMI inputs that can be used to access high-definition images for several platforms. In order to receive high-definition images through HDMI, you need an HDMI cord available at all electronics retailers.
  
  

Samsung Series 6

• The series 6 televisions all have Internet connectivity, meaning you can use the TVs to access the World Wide Web, assuming you have an in-house wireless connection. The 600 series features the 650, 630 and 610 models.
  
  The 650 model features a 120 Hz. refresh rate, a 150,000:1 contrast ratio and four HDMI inputs. It features Samsung's Touch of Color design in red. The 650 model is available in 40-inch, 46-inch and 55-inch screen sizes, according to Samsung.com.
  
  The 630 model features a 120 Hz. refresh rate, a 120,000:1 contrast ratio and four HDMI inputs. It features Samsung's Touch of Color design in charcoal gray. The 630 model is available in 40-inch, 46-inch, 55-inch and 60-inch screen sizes, according to Samsung.com.
  
  The 610 model features a 120 Hz. refresh rate, a 120,000:1 contrast ratio and four HDMI inputs. It features Samsung's Touch of Color design in red. The 610 model is available in 40-inch, 46-inch and 55-inch screen sizes, according to Samsung.com.
  
  

Samsung Series 5

• With the exception of the 560 model, the Series 5 features slower refresh rates than the Series 6 and 7 models. The 560 and 550 models are the only one in the series that utilize Samsung's Touch of Color design.
  
  The 560 model features a 120 Hz. refresh rate, a 90,000:1 contrast ratio and four HDMI inputs. It features Samsung's Touch of Color design in grey. The 560 model is available in 40-inch and 46-inch screen sizes, according to Samsung.com.
  
  The 550 model features a 60 Hz. refresh rate, a 90,000:1 contrast ratio and four HDMI inputs. It features Samsung's Touch of Color design in red. The 550 model is available in 32-inch, 37-inch, 40-inch and 46-inch screen sizes, according to Samsung.com.
  
  The 540 model features a 60 Hz. refresh rate, a 80,000:1 contrast ratio and four HDMI inputs. It does not feature Samsung's Touch of Color Design. The 540 model is available in 32-inch, 40-inch and 46-inch screen sizes, according to Samsung.com.
  
  The 530 model features a 60 Hz. refresh rate, a 80,000:1 contrast ratio and three HDMI inputs. It does not feature Samsung's Touch of Color Design. The 530 model is available in 32-inch, 37-inch, 40-inch, 46-inch and 52-inch screen sizes, according to Samsung.com.
  
  

Samsung Series 4

• The Series 4 features a slower refresh rate, a less dynamic contrast ratio and fewer HDMI inputs than the Series 6 and 7 models.
  
  The 450 model has a 60 Hz. refresh rate, a 60,000:1 contrast ratio and three HDMI inputs. It does not feature Samsung's Touch of Color design. The 450 series is available in 19-inch, 22-inch, 26-inch and 32-inch screen sizes, according to Samsung.com.
  
  

Samsung Series 3

• The Series 3 is the most basic of the options. The 350 model features a 60 Hz. refresh rate, a 35,000:1 contrast ratio and one HDMI input. The series does not feature Samsung's Touch of Color Design. It is available in 19-inch, 22-inch, 26-inch and 32-inch screen sizes, according to Samsung.com.