8KX Extension Cable Options

Intro

I’m trying to gather info on working extension cable solutions for the Pimax 8KX (this is primarily for the X but should also work for the other headsets though going fiber optic on short runs (5m) isn’t necessary for the 5K+/8K/Artisan).

In general, the DisplayPort cables have to support the following standards/specs to work on the 8KX:

  • DP 1.4
  • 8K60Hz
  • DSC
  • HBR3
  • 32.4 Gbps

Some have had luck with Club3D 2 or even 3 meter extension cables but it seems not all GPU’s provide sufficient signal strength. You have been warned… :slight_smile:

USB cables have to be USB 3.0 for the blue/thick cable and if You want more than 3m extension it should be a powered cable (or a “repeater” cable).

For the black/thin cable any USB 2.0 cable would probably suffice as it’s only used for (extra) power.
You could also just plug the USB 2 cable into a power brick nearer Your play space if possible (and extend from the wall outlet instead if needed).


Fiber Optic/Active DisplayPort Cables (male/male)

Using a fiber optic cable prevents signal degradation and noise as it transmits using light instead of electrical signals. The downsides are that they are prone to breaking (don’t bend them too much) and they are expensive.

Tested working

UGREEN Displayport 1.4 Cable, Fiber Optic DP to DP Cable 10m, purchased February 2019 on Amazon UK (no longer available it seems) - coupled with “Cable Matters” passive couplers linked below by - Tested by @Plews in this thread.


Working coupled with “Lindy 38415 DP Repeater” linked below - Tested by @twack3r


Will be tested by @DrWilken coupled with Cable Matters Repeater linked below.
UPDATE: Did NOT work with the Cable Matters repeater for the 8KX but worked fine for the 5K+ so probably a bandwidth or feature issue with the repeater.
UPDATE2: Works with the “Lindy 38415 DP Repeater”… :wink:


Passive DisplayPort Couplers (female/female)

Can likely be used with fiber optic cables as there’s no need for amplification. Most likely won’t work on passive cables.


Tested by @Plews with the UGREEN fiber optic cable which is no longer available but will most likely work with any fiber optic cable.


Active DisplayPort Couplers/Repeaters (female/female)

Amplifies or restores the signal strength. Should work with fiber optic cables but might be unnecessary/overkill.

Tested working


Tested by @twack3r with CableDeconn Fiber Optic cable linked above.

Not working


Will be tested by @DrWilken with the “YIWENTEC Fiber Optic” cable linked above.
UPDATE: Did not work with the YIWENTEC cable for the 8KX but works fine with a 5K+. Not recommended for the 8KX.


Passive DisplayPort extension cables (male/female)

These may or may not work for You as they’re passive cables and You’re at the limit of the DP specs.

2m extension (bigger chances of it working than 3m):


3m extension (less chance of it working due to signal degradation/noise):


USB

Basically, any good quality USB 3.0 extension cable should work for the USB3 (blue) port (if it’s more than 3 meters go with an active one - i.e. a repeater cable).

For the USB 2.0 port You can easily use 5m passive cables, but if You’re extending more than that go with an active/repeater (USB 2.0/3.0) cable instead or using an extension cord from Your wall socket and a generic USB charger/brick.


Linked Related Threads/Posts



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Great write up!

Please edit the above paragraph as some might understand the Lindy active DP repeater to be a passive coupler, which it is not.

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Nice catch! Fixed… :wink:

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I’ll be receiving this 5m fiber optic cable (I didn’t need 10m - otherwise I would have bought the CableDeconn one) early next week:

I’ll couple it with the Cable Matters repeater I already bought when testing 3/5m copper cables (tried with a 3m Cable Matters and a 5m DeLock cable - both 8K60Hz/HBR3/DP1.4/DSC):

EDIT: Cable Matters Repeater does not seem to work well.

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Just FYI, I’m currently using a 5m USB 3.0 extension cable that has the option to add an AC adapter but I haven’t needed to use one. Is essentially a passive extension right now. Haven’t noticed any issues yet.

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Likewise… :+1::upside_down_face:

I guess if the ports are below spec one might need an AC adapter but I’ve never had to either (I have a few cables)… :nerd_face:

They’re still active cables though. They’re just drawing power from the USB port.

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I contacted UGREEN to see if they could source more of the 10m DP I am using (that works fine in native on my 8KX), at first they seemed useful:

Could you please tell me from which online store you can or want to buy the product? Amazon US/UK/DE/FR/ES/IT/CA/MX/JP/UAE/KSA/AU/NL/SG, AliExpress, shopee, LAZADA, eBay, or UGREEN online shopping store? Or you want to buy the product directly from us or our retailers? So I can contact the relevant service team to help you ASAP.

but then they checked and came back:

Dear Friend,

Thank you for your contacting.

This cable now is out of stock in our store.

Hope this could help.

Regards

UGREEN

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So far I haven’t had any luck with the 5m YIWENTEC fiber optical cable + Cable Matters repeater… :face_with_symbols_over_mouth: :tired_face:

Ordered the Lindy 38415 Repeater… :crazy_face:

EDIT: Just tested the YIWENTEC fiber optical cable with the Cable Matters repeater and that works on my 5K+ so it’s not like the cable is broken or anything. I think/hope it’s the repeater that isn’t quite up to the task.

EDIT2: Also tried the YIWENTEC cable with a passive coupler (which admittedly is not up to spec, but does it really matter for a coupler?) and that didn’t work either. Really hoping the Lindy repeater will work! :slight_smile:

Any Updates on this?

Any Good ones for US stores?
Looking for at least 2M(don’t really need more than that), extenders and repeater’s that are verfied to work on the 8KX.

I don’t think we can use the Cable from the 5k+
(i got a new one that’s already hooked up now, that i just got new).

Even with that, i need at least another 1m/3FT(just did not bother me) and i would have been fine for my 5K+.

so, seeing how everyone saying the 8KX is shorter, 2M/6FT is all i need.

~Todd

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I would try the Club3D passive extension cables if 2m is all You need:
https://www.amazon.com/Club3D-CAC-1022-DisplayPort-6-56ft-Male-Female/dp/B07RJ13CH9

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Yes that Club3D 2m cable is the one that I’m using and it works fine.

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Update on the GPU replacement:

On my 2080Ti using the 15m optical cable and the Lindy repeater I got a good signal with the slightest hint of snow on pitch black background.

Happy to report that on the 3090 the picture is perfect with that combination.

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8KX with a 2080ti.
First tried the Club3D 3m cable with major noise issues.
Currently using the Club3D 2m cable with minor noise.
Tried the Cable Matters Repeater listed above to fix 2m cable noise and won’t connect at all, even when using a sub 1m cable :pensive:

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I’ll remove it from the list… :+1::woozy_face:

My Lindy Repeater arrives tomorrow.

I have two copper cables to try (3m + 5m) and the fiber optical cable mentioned earlier.

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The YIWENTEC cable works with the Lindy repeater…! :wink:

Finally able to play room scale gaming on the 8KX! :sunglasses:



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Dangerous abyss? :dizzy_face:

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There You go… :wink:

We have a three year old and an almost one year old kid… :wink:

As You can probably see on the other pictures I have blocked the holes between the planks into the abyss… :smiley:

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I was assuming ( and hoping) so :grin:

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Personally, that looks too thin for me. I could kick through that accidentally while playing Pavlov VR. A metal fence gate on a hinge with latches for both the open/closed positions would be just as convenient, and could be more sturdy.

Stay safe. :slight_smile:

The mechanical aspects of this setup are first rate by the way. Especially like the hooks for headsets and cables, thinking of something similar myself.

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It’s sturdier than it seems… :wink:

If I was to change it I would probably make a wooden gate just to make it fit in with the rest (and add extra bars too the fence for the kids)… :upside_down_face:

Something like this, but sturdier:

I actually thought about making two, one for the staircase and one for the area to the right on the first pic below… :upside_down_face:

BTW, the mats on the floor have two purposes:

  • Physical boundaries (I can feel where the center is + “near edges”)
  • Comfort

I know it won’t save me if I run into the walls, but honestly I stay pretty static and use either free locomotion or WalkOVR/KAT Loco (have both)… :wink:

Don’t play much online FPS though as I’m too old and don’t like being constantly “fragged” by teens (sure I can learn, but I think there’s too much learning and too little enjoying in most online gaming)… :nerd_face:


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