Display Cable Bandwidth Check?

[Nycz]

As the title says, how do i check what the bandwidth speed i am getting from my hdmi or display port cable so i know if its getting max performance from it?

[KaptCrunch]

first know  cable spec  and length of cable

Edited 22 hours ago by KaptCrunch

[BUDMAN]

The best thing you can do is drop COMCAST

[KaptCrunch]

20 hours ago, Nycz said:

As the title says, how do i check what the bandwidth speed i am getting from my hdmi or display port cable so i know if its getting max performance from it?

need special equipment or a $70 hand held unit 

search your local area for those services 

[KaptCrunch]

@BUDMAN   don't make jealous with those speeds , nycz was talking hdmi speed for streaming i guess  no stutter 

Edited 7 hours ago by KaptCrunch

[crimson]

Krunch was right, it is the spec of the cable. Plus need to know the spec of the monitor. If the cable is higher than the monitor can display, the display will throttle.

 

[BUDMAN]

The last monitor I bought came with 2 different cables, one for hdmi and display port...

[Nycz]

I know the specs of cables but that doesn't mean it's what I am getting to the pc. I don't have amd GPU anymore and when I did it's software showed the speeds of cable I was getting. Don't see it on Nvidia control panel/app or GPUz.

[srt4fun]

GPU-Z will show current link speed in the 'Advanced' tab

Edit: Just noticed that it doesn't show my secondary monitor connected via HDMI in that section. So maybe it only displays info for DP connections....or the fact that my 2nd monitor is very old and uses a DVI to HDMI cable....

Edit2: Just to be clear, in my screenshot it shows 8.1gbps link speed...but also important to know that that's for each lane...since there are 4 lanes it's a total bandwidth of 32.4gbps or DP v1.4.  So be sure to multiply your link speed by the number of lanes to get your total bandwidth.

Edited 3 hours ago by srt4fun

[Nycz]

Yeah with DP mine shows link speed but not with HDMI. My monitor says it's 2.1 but I have heard about some not being real 2.1 with not full speed support. 

[BigPapaDean]

So, where is the link so we wildcat guys can test ours?

[srt4fun]

38 minutes ago, BigPapaDean said:

So, where is the link so we wildcat guys can test ours?

 

Here's the download page  GPU-Z Graphics Card GPU Information Utility

Edited 1 hour ago by srt4fun

[srt4fun]

2 hours ago, Nycz said:

Yeah with DP mine shows link speed but not with HDMI. My monitor says it's 2.1 but I have heard about some not being real 2.1 with not full speed support. 

It depends on 3 things. Your video card, your cable, and your monitor. All 3 must support DP v2.1. Your link speed will fall to the lowest supported rate of those 3 items.

 

From what I remember from previous posts you have a RTX5070, which does support DP/HDMI v2.1

Did you end up getting the Omen 27q or 27qs? or something else? Both of those only support up to DP v1.4/HDMI v2.0 (I have the Omen 27qs as my primary monitor)

 

Ahh, I just remembered....I knew I was forgetting something.... DSC (Display Stream Compression). Using this compression you could send higher resolution/refresh rates that aren't technically allowed via the raw bandwidth limits. I could see someone saying that that's not "real DP v2.1", which technically, it isn't. The RTX5070 definitely supports this, I do believe the 27qs supports it as well...As example, If you have a 1440p @240Hz monitor with HDR enabled, that requires ~26.5Gbps of bandwidth...with DP v1.4 supporting 32.4Gbps you would not be activating DSC anyway....so basically, operating @DP v1.4 speeds would not be a bottleneck at all. --Edit: With overhead, apparently, 10bit HDR enabled it would go into DSC mode...without HDR you would be well within spec for DP v1.4 without DSC

It only comes into play with 4k+ monitors (or 1440p above 240Hz) that only support DP v1.4 with "overclocking"....which is just basically DSC, lol.

Edited 10 minutes ago by srt4fun