ASRock Shows Off HDMI-in Feature for Haswell Motherboards

ASRock is showing off many features for its next generation of motherboards for the Haswell CPUs, all part of ASRock's A-Style feature set. These features include Purity Sound, HDMI-In, 802.11ac WiFi, Waterproof by Conformal Coating and Home Cloud. Now, we have a direct demo video of ASRock illustrating the HDMI-In feature.

The video shows an iPad connected through the HDMI-In port of an ASRock motherboard and the image appearing on the monitor. Using a hotkey, users can switch between the image from the device connected to the HDMI-In port and the computer's image. No cable changes will be needed. The most notable bit, though, is that the feature works even when the computer is powered down. Presumably, when the system is powered down, the video from the HDMI-In port will automatically be passed through. The big question that remains is if any of these features will still work if the monitor is connected to a display output on a discrete graphics card. We'll have to wait and see. In the meantime, enjoy the video below.

A-Style: HDMI-In introduction

Create a new thread in the US News comments forum about this subject
This thread is closed for comments
23 comments
    Your comment
  • rolli59
    "The big question that remains is if any of these features will still work if the monitor is connected to a display output on a discrete graphics card."
    I guess the card would have to have HDMI in port and all the circuitry for that to work
    3
  • InvalidError
    The HDMI-in feature likely is nothing more than a HDMI multiplexer chip picking between IGP output and HDMI-In to present to the HDMI output, controlled by a spare pin on the system management IC.

    Since this feature also works when the CPU is "off", this means the multiplexer is either operated on 5VSB or uses reed switches or relays. In any case, using the GPU output would require powering up the GPU and the 5VSB supply would be a rather tight fit for that even if you have absolutely nothing else using it. Not to mention that the HDMI-In chip would need to pipe video through PCIe to the IO Hub, the IO Hub pipe that to the CPU and then the CPU to the GPU over the x16 interface... that's a lot of power.

    I agree with rolli, almost certainly only works with IGP. No physical path between the GPU's HDMI out and HDMI-In makes it effectively impossible on 5VSB's ~5W budget.
    4
  • twelch82
    If this supports Lucid Virtu, you don't have to have the monitor/TV connected to the discrete graphics card. I prefer that setup for my HTPC so that the graphics card can be powered down when doing other things with it besides gaming.
    1