The Alienware 
                                AW2521HF is part of the
                                Computer Monitors test program at
                                Consumer Reports.  In our lab tests, Gaming Monitors
                                models like the AW2521HF are rated on multiple criteria, such as those
                                listed below.
                            
                                                        
                                Responsiveness:
                                Responsiveness is a combination of the gaming monitors most significant contributors to the gaming experience which entails the combination of Motion Blur performance and average Input Lag performance with each available Sync type.
                            
                                                        
                                FreeSync input lag:
                                Input lag performance of the monitor when its AMD FreeSync feature is enabled and the gaming monitor is optimized for its best input lag.
                            
                                                        
                                G-Sync input lag:
                                Input lag performance of the monitor when its Nvidia G-Sync or G-Sync compatible feature is enabled and the gaming monitor is optimized for its best input lag.