Version 2 (Ivy Bridge, Bay Trail) The Ivy Bridge microarchitecture included a "next-generation" implementation of Quick Sync. Version 1 (Sandy Bridge) Quick Sync was initially built into some Sandy Bridge CPUs, but not into Sandy Bridge Pentiums or Celerons. The older Clarkdale microarchitecture had hardware video decoding support, but no hardware encoding support it was known as Intel Clear Video. Quick Sync was first unveiled at Intel Developer Forum 2010 (September 13) but, according to Tom's Hardware, Quick Sync had been conceptualized five years before that. Ī 2012 evaluation by AnandTech showed that QuickSync on Intel's Ivy Bridge produced similar image quality compared to the NVENC encoder on Nvidia's GTX 680 while performing much better at resolutions lower than 1080p. However, QuickSync could not be configured to spend more time to achieve higher quality, whereas x264 improved significantly when allowed to use more time using the recommended settings.
The eighth annual MPEG-4 AVC/H.264 video codecs comparison showed that Quick Sync was comparable to x264 superfast preset in terms of speed, compression ratio and quality (SSIM) tests were performed on an Intel Core i7 3770 (Ivy Bridge) processor. Like most desktop hardware-accelerated encoders, Quick Sync has been praised for its speed. Quick Sync Video is available on Core i3, Core i5 & Core i7 processors starting with Sandy Bridge, and Pentium processors starting with Haswell, Celeron processors do not feature Quick Sync Video. 6.1 Hardware video hardware technologies.
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