[Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Separate area for niche lag issues including unexpected causes and/or electromagnetic interference (ECC = retransmits = lag). Interference (EMI, EMF) of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction latencies like a bad modem connection. Troubleshooting may require university degree. Your lag issue is likely not EMI. Please read this before entering sub-forum.
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This subforum is for advanced users only. This separate area is for niche or unexpected lag issues such as electromagnetic interference (EMI, EMF, electrical, radiofrequency, etc). Interference of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction (ECC) latencies like a bad modem connection, except internally in a circuit. ECC = retransmits = lag. Troubleshooting may require university degree. Your lag issue is likely not EMI.
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3xil3
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[Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by 3xil3 » 06 Sep 2021, 13:14

Jusr heads ive found epersally cards exhaust out backlike my 3080FE air causing wierd EMI with monitor cable. once i move cable upwards away from any air from GPU lag gone. Depedning on if works or not you can tell if lag slowly comes back better it is longer take for lag. You can eliminate by gettting fiber displayport or HDMI.
Think cable act as EMI antenna for GPU. Other hardware dont seem to cause this only video card. If possble keep away from any case fans exhauting out air. probably be impossllbe but you will see it works that why say fiber cable as uses light not wires.

i grabbed one these not here yet but it work qustion is will cause issue gsync ive read these fiber cable work fine though
https://www.amazon.com/gp/product/B07TM ... UTF8&psc=1

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Last edited by 3xil3 on 08 Sep 2021, 22:52, edited 2 times in total.

Eonds
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Re: Video card monitor cable interference.

Post by Eonds » 06 Sep 2021, 15:39

3xil3 wrote: ↑
06 Sep 2021, 13:14
Jusr heads ive found epersally cards exhaust out backlike my 3080FE air causing wierd EMI with monitor cable. once i move cable upwards away from any air from GPU lag gone. Depedning on if works or not you can tell if lag slowly comes back better it is longer take for lag. You can eliminate by gettting fiber displayport or HDMI.
Think cable act as EMI antenna for GPU. Other hardware dont seem to cause this only video card. If possble keep away from any case fans exhauting out air. probably be impossllbe but you will see it works that why say fiber cable as uses light not wires.

i grabbed one these not here yet but it work qustion is will cause issue gsync ive read these fiber cable work fine though
https://www.amazon.com/gp/product/B07TM ... UTF8&psc=1

Image
You also have RGB fans using PWM . Consider turning off the RGB + using DC

3xil3
Posts: 48
Joined: 18 Jul 2021, 20:03

Re: Video card monitor cable interference.

Post by 3xil3 » 08 Sep 2021, 21:39

No fan RGB it RAM RGB im running off memory not using any software. tUsing software make so much worst IDK if poling from CPU.

3xil3
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Joined: 18 Jul 2021, 20:03

Re: Video card monitor cable interference.

Post by 3xil3 » 08 Sep 2021, 22:55

This fiber cable seem like might be helping EMI not %100 fixed give it week or so

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[Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by Chief Blur Buster » 09 Sep 2021, 00:47

Although not DisplayPort, I also use an optical fiber HDMI cable -- and it works wonderfully well for sending HDMI signals long distances.

These babies used to cost $300-$500 and I'm glad prices are falling on fiber-optic video cables, and I snapped one up for well under $100. Some of the optical fiber HDMI cables even fell to under $50 during Amazon sales. Optical-fiber DisplayPort is more expensive than optical-fiber HDMI cables at the moment though. There's also optical-fiber USB3 cables too (rarer, like the Oculus Link cable).

Today, optical HDMI options have become very common on Amazon recently; so common that AmazonBasics now sells optical HDMI for less than USD $50 for 30 foot to about USD $120 for 300-foot. Yep, 300 foot HDMI that keeps a 4K signal (4K60 or 1080p240).

They are great for sending 4K and 8K video signals across a big home theater room over long thin cables. I use a 10 meter (~33ft) optical fiber HDMI cable to watch all my streaming content on a 4K projector beaming onto a 120" screen!

I did not buy one for EMI immunity -- but for sending a video signal flawlessly for longer distances. At these distances, no easy way to do that for today's bandwidths without an optical fiber replacing the data wires of HDMI/DP.

Video of my optical HDMI versus non-optical HDMI cable:
twitter.com/BlurBusters/status/1276355127599865861

I used to call the old HDMI cable the "Aconada" because the cable was almost as thick as a snake. The optical fiber HDMI cable is positively slender.

But yes, they are more EMI resistant. They are definitely indeed much more immune to EMI / EMF / EMP / any form of interference than non-fiber-optic HDMI/DisplayPort cables. Video standards and cables don't normally use retroactive error correction so going optical generally won't help latency (unless you consider intermittently frozen images -- caused by a bad cable connection -- as a roundabout form of "lag" because you're waiting for the video to unfreeze/resume. Some displays "hold" the last good refresh cycle until the next error-free refresh cycle delivers...).

Regardless, well-made optical video cables will generally have fewer glitches with longer cable runs where copper fails -- or in high-EMI environments (like living mere meters away from high voltage power transmission cables).

Make sure to stick to high rated ones (4.5 stars on Amazon). The cable connectors are the parts that contain the expensive fiber electronics that can break if the connector casings / crimp protectors aren't well built; about 90% of the cost of a fiber optic video cable is the tiny advanced electronics crammed inside the cable's plug casings. Which converts non-optical to optical then back to non-optical (at the ends) to connect into existing non-optical HDMI and DP ports. So be gentle with the valuable connectors of optical video cables;
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3xil3
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Re: [Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by 3xil3 » 16 Sep 2021, 17:19

Hey thanksd for posting that info Just update up this does work but for me not enough badwith for 1440 240hz hdr gsync. gsync everything functions but It get really laggy when pushing 200+fps with hdt/gsync compaired standard displayport cable and yes they both rated same.

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Re: [Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by Kamen Rider Blade » 17 Sep 2021, 14:51

Do they make Optical Fiber Cables that have modular Optical Fiber inserts?

I believe the transceiver plug on both ends are the expensive parts.

The Cabling itself is the cheaper portion in terms of BoM (Bill of Materials) Cost.

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Re: [Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by Chief Blur Buster » 18 Sep 2021, 15:52

Kamen Rider Blade wrote: ↑
17 Sep 2021, 14:51
Do they make Optical Fiber Cables that have modular Optical Fiber inserts?
Yes, but "adaptor boxes" and "detachable HDMI ends" are more expensive.

You can get something from a VRR-compatible FiberCommand that supports 8K such as these selections usually normally used for home theaters. You'll want to budget a few hundred dollars if you go a 8K60/4K120+/1440p240+/1080p360+ VRR compatible detachable HDMI 2.1 route.

This is obviously HDMI with detachable 8K HDMI options. There's way more fiber options with HDMI that will have no problem handling gaming refresh rates (1080p 390Hz, 1440p 240Hz, 4K 120Hz) but many monitors want DisplayPort for all the monitors best features (e.g. HDR, native G-SYNC, etc). However, if your HDMI can do everything your DisplayPort can do, then that's your solution -- an LG OLED 4K 120Hz G-SYNC TV has its best features via its HDMI anyway. So check capabilities of your HDMI/DP, and if they are feature parity, then use optical HDMI since there are more optical HDMI cables than optical DisplayPort cables at the moment.

To get cheap 2-figure fiber optic HDMI (sub-$100), requires completely integrated non-detachable cable. Just buy too long a cable and coil the unused cable. Modern fiber optic cable is bend-insensitive (like Corning ClearCurve that can bend around a pencil and can be baseboard mounted). So they can safely be coiled coarsely (e.g. 12" loops many times) behind your desk without problem.

Also, optic fiber is very EMI resistant, so coiling won't pick up interference from power cables like it can with coiled speaker cables (AC buzz etc). So just buy too long a cable, and gently coil-up the excess into a circle you can hide behind something.
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Re: [Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by Kamen Rider Blade » 19 Sep 2021, 20:18

Chief Blur Buster wrote: ↑
18 Sep 2021, 15:52
Kamen Rider Blade wrote: ↑
17 Sep 2021, 14:51
Do they make Optical Fiber Cables that have modular Optical Fiber inserts?
Yes, but "adaptor boxes" and "detachable HDMI ends" are more expensive.

You can get something from a VRR-compatible FiberCommand that supports 8K such as these selections usually normally used for home theaters. You'll want to budget a few hundred dollars if you go a 8K60/4K120+/1440p240+/1080p360+ VRR compatible detachable HDMI 2.1 route.

This is obviously HDMI with detachable 8K HDMI options. There's way more fiber options with HDMI that will have no problem handling gaming refresh rates (1080p 390Hz, 1440p 240Hz, 4K 120Hz) but many monitors want DisplayPort for all the monitors best features (e.g. HDR, native G-SYNC, etc). However, if your HDMI can do everything your DisplayPort can do, then that's your solution -- an LG OLED 4K 120Hz G-SYNC TV has its best features via its HDMI anyway. So check capabilities of your HDMI/DP, and if they are feature parity, then use optical HDMI since there are more optical HDMI cables than optical DisplayPort cables at the moment.

To get cheap 2-figure fiber optic HDMI (sub-$100), requires completely integrated non-detachable cable. Just buy too long a cable and coil the unused cable. Modern fiber optic cable is bend-insensitive (like Corning ClearCurve that can bend around a pencil and can be baseboard mounted). So they can safely be coiled coarsely (e.g. 12" loops many times) behind your desk without problem.

Also, optic fiber is very EMI resistant, so coiling won't pick up interference from power cables like it can with coiled speaker cables (AC buzz etc). So just buy too long a cable, and gently coil-up the excess into a circle you can hide behind something.
Are DisplayPort with modular ends that hard to find?

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Re: [Optical-fiber DisplayPort cable for immunity to interference] Video card monitor cable interference.

Post by Chief Blur Buster » 21 Sep 2021, 10:56

Kamen Rider Blade wrote: ↑
19 Sep 2021, 20:18
Are DisplayPort with modular ends that hard to find?
Unfortunately, yes.

There are multiple markets for HDMI including home theatre -- e.g. custom wall jacks for video outputs. That requires inside-the-wall routings that goes a fair distance, and is a perfect application of optical fiber. That requires detachables, since you plug HDMI into a "wall outlet".

But DisplayPort isn't used for home theatre, so less reason to have detachable jacks for optical DisplayPort, and also the market for extensions to DisplayPort is much smaller than for extensions to HDMI.

(BTW, the home theatre market is huge, I was once the moderator at AVSCIENCE Forums a couple decades ago.)
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