Question Two DisplayPort 2.1 connections ?

[FreeBee101]

Logically, could a 5090 GPU run two Samsung 57-inch G9 Neo monitors given what we know about it so far?
If it had two DisplayPort 2.1 connections could you run them like a full 8k monitor natively?
Or could you run two 5090 cards and could you run it it was one giant display somehow?

 

[Aeacus]

If it had two DisplayPort 2.1 connections could you run them like a full 8k monitor natively?

To run 8K you don't need DP 2.1. DP 1.3 was the 1st to support 8K natively. DP 2.0 also supports 8K.

Or could you run two 5090 cards and could you run it it was one giant display somehow?

When you have enough GPU compute power, you can even use e.g 4x Quadro P5000 GPUs to power 16x 4K monitors and get 16K out of it.

Like Linus did here:

View: https://www.youtube.com/watch?v=Toft6fMvByA

And all that, 7 years ago.

 

[FreeBee101]

I was trying to see if you could run two 57inch g9 neo's at 240hz with a 5090.

Edit: I looked it up. It says it needs around 80gbs which would be a 2.1 cable. But would it actually be able to run the data at 240hz for other reasons? Some rumor say it will only have 1xdpi 2.1 port. Would it be able to run by splitting the cable into two? do they make cables like that?

Edit2: I'm assuming it's 7680*4320*10bit*240hz = 79,626,240,000 bps = 79.62624 gbps.

And why is Nvidia being so stingy on the ports? Is there a technical or cost limit?

If those were at 60 hz that is the same 80gbps.

15360*8640*10*60 = 79626240000 He had a lot of cables to run it through. Does adding extra GPUs linearly add throughput in a multimonitor setup?

 

[Aeacus]

Edit2: I'm assuming it's 7680*4320*10bit*240hz = 79,626,240,000 bits = 79.62624 gbps.

Samsung 57" Odyssey Neo G9 has reso of 7680x2160 and that up to 240 Hz.

So, if you use 10-bit color depth, calculation would be: 7680x2160x10x240 = 39,813,120,000 bits = 39.81312 gigabits per one monitor.

One DP 2.1 port would be barely enough to power two monitors at their fullest, since DP 2.1 in UHBR20 transmission mode, has bandwidth of 80 gigabits per second.

Would it be able to run by splitting the cable into two? do they make cables like that?

There are DP splitters out there. But i didn't saw any that support DP 2.1 since DP 2.1 is relatively new.
You can search it yourself: https://www.amazon.com/s?k=displayport+2.1+splitter+8k+240hz

Some rumor say it will only have 1xdpi 2.1 port.

And why is Nvidia being so stingy on the ports? Is there a technical or cost limit?

I don't believe rumors.

For comparison, RTX 4090 has: 3x DP and 1x HDMI.
And same with: RTX 3090 Ti, RTX 2080 Ti, GTX 1080 Ti.
GTX 980 Ti has: 3x DP, 1x HDMI and 1x DVI.
GTX 780 Ti has: 1x DP, 1x HDMI and 2x DVI.

So, at least since GTX 900-series GPUs (past 9 years), the top GPUs from Nvidia have all had 3x DP and 1x HDMI. I see no reason why it should change with RTX 5090.