However, Quick Sync 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.
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