Tuesday, October 2nd 2018

Intel Gen11 "Ice Lake" iGPU Supports DisplayPort 1.4a and DSC Enabling 5K and 8K

Intel processor integrated graphics will get its first major hardware update in 4 years since Gen 9.5 "Skylake," with the introduction of the Gen11 architecture that debuts with the company's "Ice lake" processors. The company confirmed in an XDC 2018 conference presentation that the iGPU will support DisplayPort 1.4a along with VESA DSC (display stream compression), enabling it to support display resolutions as high as 5K (5120 x 2880 pixels) with 120 Hz refresh-rate.

Without DSC, 5K-120 Hz requires 42.4 Gbps of bandwidth (not counting interconnect and protocol overheads), which even DisplayPort with HBR3 cannot provide, as it caps out at 32.4 Gbps. DSC offers "visually lossless" compression of the 5K-120 display stream down to roughly 14 Gbps, which can be comfortably handled by DisplayPort 1.4a. 8K (8192 x 4320 pixels) at 60 Hz also becomes possible. Merely supporting these new high resolutions doesn't imply Gen11 iGPUs can game at those resolutions. Support for them is necessitated by rapid increases in resolutions (pixel densities) and refresh-rates of high-end notebooks and ultra-portable devices.
The complete slide-deck follows.

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27 Comments on Intel Gen11 "Ice Lake" iGPU Supports DisplayPort 1.4a and DSC Enabling 5K and 8K

#26
Mistral
Major LOL at some of these slides. Intel is telling us "2K" resolution looks that bad on their products?
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#27
stimpy88
I hope the term "Visually lossless" is true... 50% compression surely cannot be easy to pull off without some kind of artifacts? I guess you just have to figure out what the right failure mode is, then it will be a case of once you see it, you'll never be able to unsee it again.
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