Extra Long Displayport Cables

I would like to move my computer so that it is further away from my sim rig. How long can displayport cables be without the aid of boosters or any other special technologies? I currently run triple 1440p up to 144Hz with no issues using 15 ft:


Does anyone have experience running longer cables?

In general 15-20ft is a good limit; depending on equipment, location, and cable quality you might get 30ft, but certainly no guarantees; hdmi even less. For longer distances consider an RF link, if you are not in an electrically noisy environment these are typically good for 50-200ft, depending on equipment.


FWIW, the issue is capacitive coupling between the wires in the cable causing signal attenuation, the effect being more pronounced in the higher frequency range (affecting detail); and vid cards are not designed to drive a highly capacitive load.

jgf said:

In general 15-20ft is a good limit; depending on equipment, location, and cable quality you might get 30ft, but certainly no guarantees; hdmi even less. For longer distances consider an RF link, if you are not in an electrically noisy environment these are typically good for 50-200ft, depending on equipment.

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FWIW, the issue is capacitive coupling between the wires in the cable causing signal attenuation, the effect being more pronounced in the higher frequency range (affecting detail); and vid cards are not designed to drive a highly capacitive load.

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Thanks for the response. Sounds like my 15 ft cables are about it. If I go longer, I want to go at least 25 ft. Sounds like this may be a coin flip if it works. A recipe for system problems.

I have no issues running G9, 240hz/10bit with this one, it's 16 ft, so you can gain extra foot.

Just noticed that they have active cable 33ft (here) and a separate booster.
No experience with either one though.

BillyBobSenna said:

Thanks for the response. Sounds like my 15 ft cables are about it. If I go longer, I want to go at least 25 ft. Sounds like this may be a coin flip if it works. A recipe for system problems.

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i have been here.. you are def at the max.. any more even though they say 1.4 they gotta carry a VESA certification, you can cross refrence it from the vesa website to the amazon cables you may be looking at to make sure you dont get taken for a ride.

15ft is best i got for signal quality on all my tests of a swear soo many dp cables. any longer it works but the screens black out from time to time and that gets annoying real fast.

I am now running a 49in ultrawide w/ vr cause as yourself i ran out of displayport cables.. and on our 3090s only 4 can run concurrently even though some models have more than 4 outputs.

What a coincidence


Maybe there´s something helpfull in there

MFG Carsten

i was gonna post that here.. but its all low distances.. max they had was 10ft i think.

Any luck with long cables? I have a LG B1 tv (4k@120hz) and a 34GN850 monitor (3440x1440x144hz) connected to a pc, problem is, the tv is 10m away from the monitor.

Currently the TV is connected with a certified 3m HDMI Maxonar cable, and recently I started getting random black screen flashes (around 1s long, with audio break). Monitor is connected with 10m Display Port Unitek cable (C1624BK-10M) – same symptoms as above.

In the past I tried connecting TV to a pc with 10m Fibbr, CableMatters and Unitek HDMI cables – it was even worse, so I moved my pc as close as possible to TV – it works better this way, but still far from ideal.

Right now, I want to order 2m Unitek HDMI cable (I think it is going to work), but I have no idea what to do with the DP cable – I can try the best cable offered by Unitek (C1616GY), but its over 70 euros.