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Intel: Ivy Bridge GPU to support 4K resolutions

posted onSeptember 20, 2011
by l33tdawg

IDF 2011 ended on last Thursday but there is still lots of data showing up because sites are processing the data they have gathered. VR-Zone is now reporting that Ivy Bridge's GPU will support resolutions of up to 4096x4096 (commonly referred as 4Kx4K). We took a deeper look at the IB GPU in our Ivy Bridge Architecture piece, but we missed this upgrade. Sandy Bridge's GPU supports only resolutions of up to 2560x1600, so this is a huge jump since 4Kx4K has over four times more pixels.

It's unlikely that we will see any 4Kx4K displays though, given that 16:9 is the standard nowadays (some higher-end are 16:10 though). That suggests a resolution of 4096x2304, which actually makes more sense given the bandwidth limitations. 4096x4096 at 60Hz with 24-bit color would require a bandwidth of roughly 36Gb/s, more than any of the current display interfaces supports (DisplayPort 1.2 is the king at 21.6Gb/s). 4096x2304 requires only ~20.2Gb/s, and that DP 1.2 can easily provide. 4096x4096 should, however, work with DP 1.2 by lowering the refresh rate to e.g. 30Hz, which would reduce the required bandwidth to be within DisplayPort's range.



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