Mini Displayport to HDMI latency / resolution

[RAA!]

Hello friends,

I have a video card that only has mini-DisplayPort outputs.
Can this cause issues such as increased latency / limited framerate or resolutions when I use an adapter to go to HDMI?

Thanks!

 

[R-T-B]

Since it's an active adapter, yes. Typically it will add a little latency and will have a limit to the converter refresh rate.

Research your adapter you buy well, is all I can advise.

 

[qubit]

You can use a passive adapter which adds no latency beyond the few nanoseconds it takes for the electrical signal to propagate across it, basically zero.

Here's lots of info on DisplayPort:

DisplayPort - Wikipedia

en.wikipedia.org

 

[R-T-B]

You can use a passive adapter which adds no latency beyond the few nanoseconds it takes for the electrical signal to propagate across it, basically zero.

Here's lots of info on DisplayPort:

DisplayPort - Wikipedia

en.wikipedia.org

I don't think minidisplayport supports passive conversion as it does not carry the TMDS signal.

 

[qubit]

I don't think minidisplayport supports passive conversion as it does not carry the TMDS signal.

Off the top of my head, I would have thought the different form factors of DP would support the same signalling, much like all USB plugs are electrically compatible, but maybe that's not correct. That Wikipedia article might clarify this.

 

[R-T-B]

Off the top of my head, I would have thought the different form factors of DP would support the same signalling, much like all USB plugs are electrically compatible, but maybe that's not correct. That Wikipedia article might clarify this.

Displayport can carry an hdmi tmds signal, but it is not a mandatory or guaranteed part of the spec. Just most all full size ports have it, so we're used to assuming it is there.

 

[qubit]

Displayport can carry an hdmi tmds signal, but it is not a mandatory or guaranteed part of the spec. Just most all full size ports have it, so we're used to assuming it is there.

The Wikipedia article referred to active adapters, so they could be for this, maybe.

 

[Deleted member 50521]

What VR headset are we talking about? AFAIK only Index and Vive use Linkbox. In those cases I never had problem with either HDMI or miniDP. The latnecy to VR headset has always been minimum.

You are talking about VR right? If not then you are posting in the wrong section.

 

[RAA!]

What VR headset are we talking about? AFAIK only Index and Vive use Linkbox. In those cases I never had problem with either HDMI or miniDP. The latnecy to VR headset has always been minimum.

You are talking about VR right? If not then you are posting in the wrong section.

Wow I forgot to even state that this was about a vr headset hahaha. It's a Samsung Odyssey plus with hdmi

 

[R-T-B]

The Wikipedia article referred to active adapters, so they could be for this, maybe.

That's what I talked about in my first post.

I use an active DIsplayport 1.4 -> HDMI 2.1 adapter (no passive conversion for this exists) so I know a bit about it.

What VR headset are we talking about? AFAIK only Index and Vive use Linkbox. In those cases I never had problem with either HDMI or miniDP. The latnecy to VR headset has always been minimum.

You are talking about VR right? If not then you are posting in the wrong section.

Latency is typically a nonissue unless worrying about HDMI 2.1 level bandwidth (like me), in which case then the chip used matters (realtek tends to be faster, synaptics is pretty snailish). They all add some but it's not really noticeable.

The bigger concern is going to be the max output of the converter. You need it to get to the headsets resolution and refresh rate, obviously.

 

[Deleted member 50521]

Man I used to power my old Vive with FuryX's HDMI 1.4 lol The provided VIve HDMI cable to link box was so short that I had to try different cables. Settled with a DP to mini-DP cable in the end as back then (2016) some HDMI cables I bought never worked for some reason.