What components or elements of a Windows PC tend to lead to video tearing and choppy playback on YouTube's 1080p playback and similar? I've got what I think is a pretty decent PC Spec and yet when playing video's on YouTube or Vimeo at full screen I can hear the CPU fan speed up a lot and the playback isn't always so great. Also is Windows 8 any smoother for playing back videos? Eventually I want to start editing some videos on my PC so I need to know the playback is nice and smooth. Windows 7 Ultimate (x64) Service Pack 1 Gigabyte Technology Co., Ltd. EG41MFT-US2H 3.20 gigahertz Intel Pentium Dual-Core 64 kilobyte primary memory cache 2048 kilobyte secondary memory cache 64-bit ready Multi-core (2 total) Not hyper-threaded Bus Clock: 266 megahertz BIOS: Award Software International, Inc. F7 11/04/2010 8192 Megabytes Usable Installed Memory AMD Radeon HD 6570 [Display adapter] hp DVD-RAM GH40L ATA Device [Optical drive] INTEL SSDSA2MH160G1GN [Hard drive] (160.04 GB) WDC WD10EARS-00Y5B1 [Hard drive] (1000.20 GB) Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more.