Samsung CF591
These Samsung monitors can all use AMD’s FreeSync variable refresh rate technology over their HDMI inputs. Until recently, FreeSync was a feature limited to DisplayPort outputs. The refresh rate maxes out at 60Hz for all three displays, though.
All three displays use vertical-alignment (or VA) LCD panels. Samsung says these panels should offer better contrast with fewer backlight bleed issues than IPS technology. The specified contrast ratio for all three monitors is 3000:1, and maximum brightness is 250 cd/m². The displays’ backlights are claimed to be flicker-free, too. The 1800R (or 1800-mm radius) curvature on these monitors is stronger than average for a curved display.
Samsung CF390
Now for the main differences between the different models. The CF591’s panel can cover a claimed 117% of the sRGB color space. Samsung builds two 5W speakers into this model, too. The CF591 includes a DisplayPort 1.2 input, dual HDMI 1.4 connectors, and a VGA input.
Meanwhile, the CF390 models are a little simpler. These displays lack built-in speakers and DisplayPort inputs, but the integrated stand offers height, swivel, and tilt adjustments. The CF390s offer HDMI and VGA connectors.
