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Do expensive HDMI cables make a difference?

dante01

Distinguished Member
For longer runs you'd be recommended to look at HDMI over fibre as opposed to conventional HDMI cabling. It is more expensive, but also more reliable than HDMI, especially if dealing with higher bandwidth UHD and HDR encoded video. If not needing the additional bandwidth then also consider using HDMI over HDBaseT which allows you to convey HDMI signals using cat5 or 6 cabiling over much greater distances than conventional HDMI cabling would facilitate.

Simple answer is to not run HDMI over distances greater than 8m and try to keep HDMI cable runs under 6m.
 

Joe Fernand

Distinguished Member
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At 10m you can run into issues with HD (1080p) and will more than likely have issues with UHD (2160p) - our 'solution' being one of our RuiPro Hybrid Fibre HDMI cables which then takes away any issues around running the cable close to a power cable!

Joe
 

Nostromo71

Well-known Member
I've used £10/15 ultra slim/flexible 5,7 and 10 metre cables alongside power cables for years and have never had any issues with sparkles.
 

AlanX

Active Member
Well, two quite different viewpoints! Appreciate both.
I'm not running more than HD (well, slightly more, if 1920 x 1200 static images count as more than HD). Secondly, I'd be inclined to suck it and see if a cheap cable will do the job, rather than invest £200 on a fibre solution that I may not need (but can keep in mind as a 'backstop'). Thirdly, if the mains cable was a problem, the cheapest solution will be a second cable protector and separate route.
 

Trollslayer

Distinguished Member
Higher frame rates affect the bitrate as well plus other factors.
 

andy1249

Distinguished Member
Well, two quite different viewpoints! Appreciate both.
I'm not running more than HD (well, slightly more, if 1920 x 1200 static images count as more than HD). Secondly, I'd be inclined to suck it and see if a cheap cable will do the job, rather than invest £200 on a fibre solution that I may not need (but can keep in mind as a 'backstop'). Thirdly, if the mains cable was a problem, the cheapest solution will be a second cable protector and separate route.
Firstly , no cable longer than 8 meters has ever passed the high speed test suite ( category 2 ), however , the high speed test suite has always tested to 4096 x 2140 ar 60 fps ....so assuming it fails at some point between 1080p and that early assumption of 4K, a longer cable may well be fine for 1080p....cables as long as 15 meters have worked for 1080p...they just wont ever have passed and gotten a genuine certification so there are no guarantees.

Second, general rule of thumb is never run signal cables beside mains cables.
That is a rule everywhere.
The magnetic field from a mains cable is of a strength that can swamp any signal carrying cable.

Having said that, HDMI cables built to spec have a complete metallic outer shield that should be able to handle it ( faraday cage etc.)
Its still good advice not to do it though.
 

crobo

Well-known Member
Could someone do me a favour, save me from scrolling through 29 pages in this thread and recommend a 6m cable that does the job without breaking the bank? Preferably from Amazon?
 

Nostromo71

Well-known Member

Trollslayer

Distinguished Member
"Ooh-La-La series" - I like it! :rotfl:
 

crobo

Well-known Member
Cheers mate
 

dpullen87

Active Member
Getting sparkles when watching 4k HDR content through a media player, more noticeable on darker scenes. Currently using a amazon basic cable and want to order another to try to see if resolves the issue. What would you recommendation be, anything that is premium certified? cable needs to be around 1.5m.
 
Last edited:
At 1.5m the best you can do is a Premium High Speed HDMI cable. Those are certified by an Authorized Testing Center (ATC) following the protocols designed and implemented by HDMI.org. Any cable mfr can submit their cables to an ATC for certification. Just look for Premium High Speed HDMI cable and make sure it comes with a QR label for authenticity. I've used BJC Premium High Speed HDMI cables and have had no issues at all with 4k HDR (including Dolby Vision) from any source. Just be mindful of bend radius because you don't want to put any strain on the HDMI input.

If the cable description starts to talk about HDMI 2.0, 2.1, etc just ignore it as Joe mentions above. A Premium High Speed HDMI cable (QR label) means that it has been tested and certified to meet all of the HDMI 2.0b hardware specifications.
 

Trollslayer

Distinguished Member
What Otto said.
 

dpullen87

Active Member
At 1.5m the best you can do is a Premium High Speed HDMI cable. Those are certified by an Authorized Testing Center (ATC) following the protocols designed and implemented by HDMI.org. Any cable mfr can submit their cables to an ATC for certification. Just look for Premium High Speed HDMI cable and make sure it comes with a QR label for authenticity. I've used BJC Premium High Speed HDMI cables and have had no issues at all with 4k HDR (including Dolby Vision) from any source. Just be mindful of bend radius because you don't want to put any strain on the HDMI input.

If the cable description starts to talk about HDMI 2.0, 2.1, etc just ignore it as Joe mentions above. A Premium High Speed HDMI cable (QR label) means that it has been tested and certified to meet all of the HDMI 2.0b hardware specifications.
Thanks for the replies, £40 with shipping for BJC 6 foot cable :(

Will look on amazon for a certified cable to try.
 

Joe Fernand

Distinguished Member
AVForums Sponsor
'Getting sparkles when watching 4k HDR content through a media player, more noticeable on darker scenes.' - do you have any other HDMI cables you can try out before you make a purchase?

Joe
 

gibbsy

Moderator
'Getting sparkles when watching 4k HDR content through a media player, more noticeable on darker scenes.' - do you have any other HDMI cables you can try out before you make a purchase?

Joe
I had to change a cable for exactly that problem when I first hooked up my new Pioneer LX500 on UHD content.
 

dpullen87

Active Member
'Getting sparkles when watching 4k HDR content through a media player, more noticeable on darker scenes.' - do you have any other HDMI cables you can try out before you make a purchase?

Joe
Currently using an amazon basics cable, have ordered another amazon basics to test plus a Premium Certified one to test as well

https://www.amazon.co.uk/mrocioa-Premium-Certified-support-HDMI2-0-Black/dp/B07KWNPZ1L

Both should be here this evening, will report back if it makes any difference.
 

dpullen87

Active Member
Tried multiple amazon basic cables and a premium certfied cable but still no difference, went direct tv to rule out the amp and still the same. Perhaps the device is faulty :mad:

Thanks for the help guys.
 

Trollslayer

Distinguished Member
I can think of a couple of ways PCB design could do that.
 

steelydanfan

Active Member
I've just ordered a couple of new hdmi cables from amazon https://www.amazon.co.uk/Belkin-AV10175bt2M-BLK-Premium-Optimal-Viewing/dp/B075N83B9X/ref=mp_s_a_1_4?crid=3N0GCZS5ZJKII&keywords=belkin+ultra+high+speed+4k+hdmi+cable&qid=1555943402&s=gateway&sprefix=belkin+ultra&sr=8-4
Now before you guys shoot me down I know they aren't certified 2.1 (no cables are yet I believe) but apparently they are rated at 48Gbps so in theory they could give you a little bit of future proofing ;)
I need a couple of new cables anyway so for me it's a no brainer, I know I can get certified high speed (18Gbps) for a lot less but why buy them now to potentially throw away in a year or three when I should get several years out of these (until they change the specs again :rolleyes: )
Strangely enough on Belkin's website they have another 48Gbps cable that is twice the price but apart from having a braided cable sleeve looks pretty much identical spec wise.
I have a box full of hdmi cables in my loft, didn't realise how much money I have wasted on these things (still doing :D) until I was rummaging around the other day :eek:
So to answer the question at the top of the post "it depends" ;)
 

Trollslayer

Distinguished Member

Joe Fernand

Distinguished Member
AVForums Sponsor
These cables are not 'Ultra High Speed' certified - the marketing lacks any reference to official Certification so potentially they are just a cable which happens to use Ultra in its name :)

At 2m most HDMI cables are fine for 4K UHD and its various Features.

Joe
 
I agree with Joe. At 2m almost any, well made High Speed HDMI cable will work. I'd just stick with a Premium High Speed HDMI cable and be done with it. The Belkin cable in question was introduced awhile back BEFORE the 48Gbps HDMI 2.1 specs were ratified and the final chip designs were sent off for fabrication. Pure marketing, plain and simple. They will not give you any advantage over other High Speed HDMI cables. And, in my opinion, misleading to the consumer. The ONLY way to future proof is to install your cables in a conduit if you have a long run or to install your cables in a manner that makes swapping them out easy to do.
 

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