HDMI Adapters

Walter Boyd wrote:
On 3/21/2019 1:49 AM, Paul wrote:
Walter Boyd wrote:

Thanks. That's a lot to digest but it will be interesting to see how
it shakes out...

Is your HDMI screen an exotic one, or a more
ordinary one ?

See if the box mentions native resolution value.

If the monitor has DL-DVI on it, I suppose that's
a hint it is an ordinary monitor.

An "extreme monitor" with a high native resolution,
might use only (two) HDMI or a DisplayPort.

The Wikipedia article on DVI, tells you how far single link
DVI goes, and how far dual link DVI goes. The "appearance"
of dual link, a full array of DVI pins, does not "guarantee"
the hardware is dual link. But if the Display control panel
has already shown 2560x1600 operation at 60Hz, there's a good
chance the DVI uses is DL-DVI.

The Wikipedia HDMI article has a table half way down
the page, that defines a few data points for HDMI operation.
Occasionally, a little interpolation is required, to work
out what other values might work.

For example, I see an entry like this. Maybe I own a
2560x1600 monitor at 60Hz. Will it work ?

2560 × 1440 75Hz 7.09 Gbit/s

I note that since the refresh rate I will be using is lower,
that gives more headroom on resolution.

1440 * 75/60 = 1600

which means 2560x1600 @ 60Hz refresh, would also be 7.09Gbit/sec.

Paul
Nothing exotic about it. It's a low end Dell. The Native Resolution is
1920 x 1080 at 60 Hz...


OK, so we won't be seeing a resolution limit problem on
any of your video card outputs. The HDMI has the attraction
of at least from a standards perspective, offering audio over
HDMI. It probably works over DVI (because only a single lane
of DVI is used at 1920x1080), so you can play with converting
the DVI to HDMI if you want, and you might get audio from it.

Just don't "bet the farm" that the audio will work.

In the same sense here, that I've practically *never* got
Bluetooth stacks to work properly. Simple looking
hardware, and the worlds crappiest software ideas on
how to make such hardware work... Grrr. Some platforms
(your Android phone), make Bluetooth look so "easy".
On the PC, it's some kind of computer nightmare. I tried
to set up two PCs, one as an "audio source", the other as
an "audio sink", and I was *that close* to making it work.
One machine kinda acknowledged there was another machine
knocking on the door. But some software step was missing,
and the two computers were laughing at me :-/ Foiled
again. And so it goes with Bluetooth, the concept from hell.
I also tried to set up a Piconet between two machines,
and I managed to squeeze *two* packets through it, before
it died for good. Again, I could hear the PCs snickering
when my back was turned.

And that's what I mean by "don't bet the farm". You can
pretend you're going to get audio, but if it doesn't
work, then you likely will not be surprised particularly.
Just listen for the snickering.

Paul

In article , lid says...

Walter Boyd wrote:
On 3/21/2019 1:49 AM, Paul wrote:
Walter Boyd wrote:

Thanks. That's a lot to digest but it will be interesting to see how
it shakes out...

Is your HDMI screen an exotic one, or a more
ordinary one ?

See if the box mentions native resolution value.

If the monitor has DL-DVI on it, I suppose that's
a hint it is an ordinary monitor.

An "extreme monitor" with a high native resolution,
might use only (two) HDMI or a DisplayPort.

The Wikipedia article on DVI, tells you how far single link
DVI goes, and how far dual link DVI goes. The "appearance"
of dual link, a full array of DVI pins, does not "guarantee"
the hardware is dual link. But if the Display control panel
has already shown 2560x1600 operation at 60Hz, there's a good
chance the DVI uses is DL-DVI.

The Wikipedia HDMI article has a table half way down
the page, that defines a few data points for HDMI operation.
Occasionally, a little interpolation is required, to work
out what other values might work.

For example, I see an entry like this. Maybe I own a
2560x1600 monitor at 60Hz. Will it work ?

2560 × 1440 75Hz 7.09 Gbit/s

I note that since the refresh rate I will be using is lower,
that gives more headroom on resolution.

1440 * 75/60 = 1600

which means 2560x1600 @ 60Hz refresh, would also be 7.09Gbit/sec.

Paul
Nothing exotic about it. It's a low end Dell. The Native Resolution is
1920 x 1080 at 60 Hz...


OK, so we won't be seeing a resolution limit problem on
any of your video card outputs. The HDMI has the attraction

If you use a dvi to hdmi converter dongle than expect to have to route
your audio out the line out jacks on back of pc into a suitable line in
jack on the tv. I don't believe dvi has anything to do with audio.
Usually there's some specific jack and a specific hdmi port to use going
that route.

Personally I've found the best way to go is get a tv has a pc-in
standard vga connection and run spearate audio cables to appropriate
input on tv. I run three tv's using that method and all run fine at hd
quality. Two I5's and a Intel 3.0 Gz dualcore.

Walter Boyd wrote:
On 3/21/2019 1:49 AM, Paul wrote:
Walter Boyd wrote:

Thanks. That's a lot to digest but it will be interesting to see how
it shakes out...

Is your HDMI screen an exotic one, or a more
ordinary one ?

See if the box mentions native resolution value.

If the monitor has DL-DVI on it, I suppose that's
a hint it is an ordinary monitor.

An "extreme monitor" with a high native resolution,
might use only (two) HDMI or a DisplayPort.

The Wikipedia article on DVI, tells you how far single link
DVI goes, and how far dual link DVI goes. The "appearance"
of dual link, a full array of DVI pins, does not "guarantee"
the hardware is dual link. But if the Display control panel
has already shown 2560x1600 operation at 60Hz, there's a good
chance the DVI uses is DL-DVI.

The Wikipedia HDMI article has a table half way down
the page, that defines a few data points for HDMI operation.
Occasionally, a little interpolation is required, to work
out what other values might work.

For example, I see an entry like this. Maybe I own a
2560x1600 monitor at 60Hz. Will it work ?

2560 × 1440Â* 75HzÂ*Â* 7.09 Gbit/s

I note that since the refresh rate I will be using is lower,
that gives more headroom on resolution.

Â*Â* 1440 * 75/60 = 1600

which means 2560x1600 @ 60Hz refresh, would also be 7.09Gbit/sec.

Â*Â* Paul
Nothing exotic about it. It's a low end Dell. The Native Resolution is
1920 x 1080 at 60 Hz...

Then, it doesn't matter which cable you use. Pick the cable that's cheapest
or most convenient to get. HDMI has the advantage that it also does sound,
but almost no monitors have speakers.

I have the opposite situation where my monitor only does DVI but the card
does HDMI or DP. The HDMI to DVI cable works just fine at 2560x1440

On 21/03/2019 16:31, Jonathan N. Little wrote:
lew wrote:
On 2019-03-21, Walter Boyd wrote:
Advice please. I have a 27" monitor which connects only via HDMI. My PC
has an NVIDIA GTX 750 2GB video card with mini-HDMI, DVI-I, and DVI-D
adapters. What's my best option for an adapter to connect the two with
the least (if any) performance hit? -Walt

A vote for the mini-HDMI to HDMI cable. It is like using a usb cable
with micro usb & usb-A or usb-c to usb-A; just plug it in.

Also for some strange reason a tablet might come out with a mini-HDMI
port like what I had with my 1st tablet, an ole ACER, which had the
mini-HDMI port.


I vote for the DVI to HDMI for the very practical reason of mechanical
strain relief. One little tug and that very small jack...


Only possible reason not to would be if your monitor has speakers that
you want to use and the video card can't transmit sound via DVI (which
would be non-standard but is sometimes supported).

--

Brian Gregory (in England).

Brian Gregory wrote:

Only possible reason not to would be if your monitor has speakers that
you want to use and the video card can't transmit sound via DVI (which
would be non-standard but is sometimes supported).


Even then I would not, speakers in monitors always suck. Even cheapo
battery powered jobbers sound better.

--
Take care,

Jonathan
-------------------
LITTLE WORKS STUDIO
http://www.LittleWorksStudio.com

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lid:

In article , Walter Boyd
wrote:


snip


either a mini-hdmi to hdmi or dvi to hdmi adapter. zero performance hit
and they're dirt cheap (buck or two).


But hdmi carries audio if the monitor has speakers (I suspect a 27" monitor
would).

Dominique wrote:
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lid:

In article , Walter Boyd
wrote:


snip


either a mini-hdmi to hdmi or dvi to hdmi adapter. zero performance hit
and they're dirt cheap (buck or two).


But hdmi carries audio if the monitor has speakers (I suspect a 27" monitor
would).

Monitors with speakers are the exception. Especially older ones.