DP++ support

[Argyr]

I've been googling for hours but I didn't find a definitive answer, so I was wondering if you could help me.

I'm soon upgrading to an RTX 2060 card, but my monitor is and old piece of trash with only HDMI and DVI support. I have an expensive 3 meter long Delock DVI cable with fancy gold connectors, I really dont want to throw it away so I came up with the idea of using a DVI to DP adapter until I'm ready to upgrade my monitor too.

Delock is my choice of brand when it comes to cables, you can't cheap out on them especially when it comes to DisplayPort. Turns out they are quiet pricy, and since I only need the adapter for a few months or maybe 1 year I started looking at second hand websites and I found a really cheap unused Delock adapter for 1/10 of the price. (https://www.delock.com/produkt/61765/merkmale.html)

It's a passive one "suitable only for graphics cards with DP++ output "

Does the RTX series support DP++? I know the 2060 hasn't been released yet but generally, do modern cards support DP++? It used to be written above the DP port, which practice seemed to have vanished.

Thanks in advance!

 

[Vayra86]

https://nl.wikipedia.org/wiki/DisplayPort

DP++ allows you to push a DVI signal across that cable. But its still limited to a DVI signal. So if you want high refresh at high res you may run into DVI bandwidth problems. You apparently need an 'active' adapter. It all sounds very tacky and prone to issues to me.

Its not true that good DP cables need to cost a fortune, if you don't get a cheap knockoff brand, they're all just fine. My Eizo FG2421 came with a no-name DP cable... does the job fine. Its a digital signal, it either works or it doesn't. Every adapter is a risk at interference.

 

[newtekie1]

First, when it comes to digital cables(DVI, HDMI, DP) the expensive cables with fancy gold connectors are nothing more than a marketing gimmick to get you to pay more money. It doesn't affect the signal one bit. This is one of the many advantages of using a digital signal.

Second, you'd be better off getting an HDMI to DVI adapter since HDMI and DVI use the exact same video signal, so there is no chance of the adapter not working.

Third, displayport cables don't have to be expensive.

Forth, just use HDMI directly and grab a cheap HDMI cable. Again, they don't have to expensive.

 

[Argyr]

https://nl.wikipedia.org/wiki/DisplayPort

DP++ allows you to push a DVI signal across that cable. But its still limited to a DVI signal. So if you want high refresh at high res you may run into DVI bandwidth problems. You apparently need an 'active' adapter. It all sounds very tacky and prone to issues to me.

Its not true that good DP cables need to cost a fortune, if you don't get a cheap knockoff brand, they're all just fine. My Eizo FG2421 came with a no-name DP cable... does the job fine. Its a digital signal, it either works or it doesn't. Every adapter is a risk at interference.

Thanks for your response. I just need a cheap quick solution for a 60Hz monitor until I can upgrade to a high refresh rate monitor.
I know DVI has it's limitations but I don't mind since it's an old 24" monitor. When I can find and fund a proper monitor I'll need to buy a new DP cable anyway.

I just wanted to know if the RTX cards support DP++ signals or not, since there's no info on that anywhere.

 

[Flaky]

Citing wiki:

Dual-mode is an optional feature, so not all DisplayPort sources necessarily support DVI/HDMI passive adapters, though in practice nearly all devices do. Officially, the "DP++" logo should be used to indicate a DP port that supports dual-mode, but most modern devices do not use the logo.

So yeah, nobody even bothers to use the logo, yet the cheap and simple DP->HDMI and DP->DVI work almost everywhere.

The only downside is that you get only DVI single link when using such an adapter. But, since 1920x1200 60Hz requires only single link, that's not a problem. (assuming the display from your specs)
And you probably paid extra for that cable to be dual link... Sad to say, but it isn't worth that much now.

So...
If you don't need DVI dual link, get a card with HDMIs and DPs and use an adapter.
If you need a DVI dual link, wait for gtx 2060, as surely some models with have it (some 2070 already do).

That's of course if you really really have to use the DVI cable... rather than switching to HDMI.

 

[newtekie1]

So yeah, nobody even bothers to use the logo, yet the cheap and simple DP->HDMI and DP->DVI work almost everywhere

This has been my experience as well.

That's of course if you really really have to use the DVI cable... rather than switching to HDMI.

Yeah, I'm also kind of wondering why the fuss over using an adapter when just buying a cheap HDMI cable would be guaranteed to work and probably cost the same or less.

 

[Argyr]

since HDMI and DVI use the exact same video signal,

I didn't know that.
Of course, HDMI to DVI! I'm stupid. I totally discarded it since DP is the recommended cable for G-sync (which i'm not upgrading to yet). Now I roasted myself pretty bad.
Thank you very much, will get a HDMI to DVI adapter to avoid DP troubles Vayra mentioned.

Forth, just use HDMI directly and grab a cheap HDMI cable. Again, they don't have to expensive.

While true, I need a 3 meter one, and those can get pretty expensive. The cheapest offer is $21 in my country. Far too much for something i'm throwing away the minute I'm getting a VRR monitor. The adapter method would be half as much.

Citing wiki:
assuming the display from your specs

Yep. Single link will be fine.

Citing wiki:
Sad to say, but it isn't worth that much now.

I think the biggest part of the cost was the 3m length. But, yeah I'm sad to see a nice cable like that become worthless. I'm keeping it, might become a valuable antique in 40 years or so

 

[FordGT90Concept]

DP++ = Passive or Active Adapters
DP = Active Adapters Only

If there is no DP++ logo, assume it is DP.
If you want to play it safe, just buy active adapters. Active adapters usually go for around $30-40 USD.

AMD and NVIDIA reference designs usually don't have DVI, add-in board partners usually place one DVI-D port on it.

If you're only driving the one monitor and the card has an HDMI port, just use an HDMI cable.

 

[eidairaman1]

Look at startech or cables2go for DVI to DP adapters.

I had to get a DP to VGA adapter to keep my NEC Multisync LCD 1700V running.

 

[Argyr]

Look at startech or cables2go for DVI to DP adapters.

I had to get a DP to VGA adapter to keep my NEC Multisync LCD 1700V running.

never heard about startech but I like the name, simple but classy

 

[Tallencor]

Surely the 2060 will have an hdmi port no?
If your monitor supports hdmi why not just grab a cheap cable to tie u over till u upgrade the display. Most new displays come with a display port cable Inc so no need for the added purchase down the rd when u do switch.

 

[OneMoar]

dvi is dead, you would be silly for using it

 

[eidairaman1]

dvi is dead, you would be silly for using it

Tends to be more robust than hdmi

 

[FordGT90Concept]

never heard about startech but I like the name, simple but classy

They are a bit spendy but they work. Just keep in mind HDMI version and/or DVI single-link or dual link. Most DP adapters are low HDMI version (anything higher than 1920x1200@60Hz may be spotty) or DVI single-link (up to 1920x1200@60Hz). If you need more than that, you'll have to make sure the DP adapter will definitely support it.

 

[OneMoar]

Tends to be more robust than hdmi

how so HDMI is DVI literally exactly same protocol

 

[eidairaman1]

how so HDMI is DVI literally exactly same protocol

Not protocol, physical connection.

 

[OneMoar]

eh debate able I have seen DVI connectors get fked
somebody trips over them or yanks on them doesn't matter if its DVI HDMI or serial port they all get broke

 

[phill]

For my 1070 SC and my 1080 Ti's I currently have, I just use DP to DVI adaptors for my screens as I've currently not got DP on my screens.. They work absolutely fine but then again I'm only running 1080P at the moment. I believe the adaptors support up to DP 1.3 but obviously the cards are 1.4..

I know, I need new screens lol

 

[FordGT90Concept]

First iteration of DP can handle 2560x1600@60 Hz but the output side must be DVI dual-link which will fetch a premium price. Most are just DVI single-link.

 

[Hockster]

I've got a cheap DVI-DP adapter, Stardock I think, and it works just fine for 1920X1200.

 

[FordGT90Concept]

Just learned something new, DP++ has TMDS limitations:
1.0 = no DP++ support
1.1 = equivalent of DVI single-link/equivalent to HDMI 1.2
1.2 = equivalent of DVI dual-link/slightly less than HDMI 1.4
1.3/1.4 = double that of DVI dual-link/equivalent to HDMI 2.0 but apparently no passive adapters exist to exploit this bandwidth


Edit: Looks like RTX 2060 FE has a DVI-D dual-link port + USB-C + HDMI + 2x DisplayPort:

Spoiler: CES I/O pate pic

If your current monitor is DVI-D, you don't need to buy anything extra.

 

[Argyr]

Just learned something new, DP++ has TMDS limitations:
1.0 = no DP++ support
1.1 = equivalent of DVI single-link/equivalent to HDMI 1.2
1.2 = equivalent of DVI dual-link/slightly less than HDMI 1.4
1.3/1.4 = double that of DVI dual-link/equivalent to HDMI 2.0 but apparently no passive adapters exist to exploit this bandwidth


Edit: Looks like RTX 2060 FE has a DVI-D dual-link port + USB-C + HDMI + 2x DisplayPort:

Spoiler: CES I/O pate pic

If your current monitor is DVI-D, you don't need to buy anything extra.

I know about the FE version, but I'm an MSI addict and seems like MSI dropped DVI support
https://www.msi.com/Graphics-card/GeForce-RTX-2060-VENTUS-6G-OC/Gallery

 

[FordGT90Concept]

Surprising. Welp, HDMI for you then!