[noggin]

Hello forum-- ... wondering about a setup using my current AVR (not 4k/UHD capable) and the ability to utilize full 4096x2160 on my 55' UHD display. OG 1080p is just fine but this ChromeBox is an awesome piece of kit and I want to test all features. Currently I'm using a DP2DVI adapter connected to a DVI2HDMI cable to my display but the adapter max resolution is 1080p. The HDMI port from CB is ported to my AVR for HD bitstreaming.

I'm thinking of going THIS route to achieve both goals of 4k + HD bitstreaming w/o having to upgrade my AVR, but want to see if anyone else is using a setup similar to this currently. The adapter is what I'm most unsure about although it boast's full 4K (3840x2160) support, my UHD display signal from ChromeBox on my current setup is showing 4096x2160 if I use HDMI directly.

Questions:

A.) What is your display resolution showing using a 4k DP2HMDI adapter from the CB to your UHD display and which adapter are you using?
B.) 4096x2160 vs. 3840x2160 (UHD/4k) on CB?


Please advise on either if possible!

I have a feeling that DP->HDMI converters are labelled as 1080p max because at the time most of them were produced that was the max HDMI standard available. As the adaptor pushes the DP chipset into "HDMI mode" (it doesn't convert DP video to HDMI, it tells the GPU to output in "HDMI over DP" rather than "Native DP" mode) I think they support whatever can be supported over HDMI 1.4a and the Chipset.

Technically 3840x2160 isn't in the HDMI 1.4a standard (that didn't include the CEA modes to describe those resolutions) it appears to work fine.

I'm running my Chromebox over HDMI (not DP - didn't see the point of using an adaptor) to a Sony UHD set and have the following modes supported in OpenElec :

3840x2160 @ 23.976/24.000/25/29.97/30.00Hz
4096x2160 @ 23.976/24.000Hz

Full VAAPI H264 acceleration is available for these resolutions and frame rates.

I believe the DP->HDMI output would offer the same.