High Speed HDMI Cable 4K@60hz 10bit

faheemrazzaq · 23 Oct 2016 at 14:45

I am facing the usual problem with the misleading advertising of HDMI 2.0. I ordered a cable, which was rated at 21gbps and it can only do 4K@30hz when I connect my 4K TV with my PC. There is a lot of picture flashing at 60hz and many times no signal at all. It is definietly mis-sold and I will get back to the seller.

Can someone recommend a cable that can reliably perform the task at hand?

VincentHanna · 23 Oct 2016 at 16:18

I'm using a tesco HDMI cable.

What GPU are you connecting?

faheemrazzaq · 23 Oct 2016 at 16:35

I have a Gtx 980 sli setup.

So with Tesco cable you can get 4:4:4 10 bit. Obviously depends if your tv is capable also.

sparkymark75 · 23 Oct 2016 at 16:37

The AmazonBasic high speed HDMI cables do the job for me. I confirmed on my Denon AVR that it was 4:4:4 and 10 bit.

faheemrazzaq · 23 Oct 2016 at 17:18

sparkymark75 said:
The AmazonBasic high speed HDMI cables do the job for me. I confirmed on my Denon AVR that it was 4:4:4 and 10 bit.

Just want be sure that that you are talking about 4k@60hz? My old hdmi cables do fine 1080p @60hz 4:4:4 10bit.

xtremedetailz · 23 Oct 2016 at 19:45

if your using a samsung tv make sure uhd colour is turned on on that port.

ToTheMax · 24 Oct 2016 at 07:12

Got a couple of 4K setups, cheap Amazon CSL cables do the trick. But you have to configure both ends to do UHD colour at 60Hz.

VincentHanna · 24 Oct 2016 at 13:16

I didn't think any HDMI 2.0 supports 4k@60hz with 4:4:4 in 10 bit mode?

You need DisplayPort for that sort of bandwidth

ov_sjo · 24 Oct 2016 at 13:25

VincentHanna said:
I didn't think any HDMI 2.0 supports 4k@60hz with 4:4:4 in 10 bit mode?

You need DisplayPort for that sort of bandwidth

TV's don't typically have DP...

VincentHanna · 24 Oct 2016 at 13:28

ov_sjo said:
TV's don't typically have DP...

I know, and your sarcasm dots are noted.

But my Panasonic AX802B does...

It doesn't have a 10bit panel though so there's no benefit to using it over HDMI 2.0

And infact I use the HDMI for audio via my A/V receiver so the HDMI 2.0 is more useful to me.

andicole0 · 24 Oct 2016 at 13:40

You could try one of these ;-)

I thought only two types of HDMI cable existed, standard and High Speed.

Andi.

SeriousPigeon · 24 Oct 2016 at 13:47

VincentHanna said:
I didn't think any HDMI 2.0 supports 4k@60hz with 4:4:4 in 10 bit mode?

You need DisplayPort for that sort of bandwidth

You are correct. HDMI 2.0 will only do 4:4:4/RGB in 8 bit. You need to drop either frame or chroma sampling rates to get to 10 bit.

VincentHanna · 24 Oct 2016 at 13:57

So in answer to the OP's question. It's not possible.

http://www.acousticfrontiers.com/uhd-101-v2/

faheemrazzaq · 24 Oct 2016 at 22:53

Ok I now got a Amazon High Speed HDMI cable. Unfortunately Same problem. 4K@60hz is only possible with 8 bit 420. Even the RGB 8 bit is not displayed. While 4K@30hz output with all possible combinations of 8,10 and 12 bit with 420,422 and 444 working. I also tried the cable with the 4K monitor. The monitor is working fine as soon as I am on desktop but as soon as a game is launched nothing is displayed over hdmi 2.0. DP works fine. Now reading around it appears that there is a nvidia limit on consumer level cards. But that is suppose to be just affecting the 10 bit output. Since I can't even get rgb 8 bit working, I am very unsure that if it is nvidia or still the cable?

VincentHanna · 25 Oct 2016 at 00:19

Is your SLI bridge connected properly?

What are you using as a display? Sometimes TVs have to be set to a specific mode.

faheemrazzaq · 25 Oct 2016 at 00:57

Yes Sli is working fine. I have already tried with Sli disabled. And I have set TV to enhanced hdmi mode. Since this problem is also replicated by my 4K monitor, TV is least likely to be a problem. Either it's nvidia or I am really unlucky with the cables.

ViRuS2k · 25 Oct 2016 at 08:35

KabelDirekt 5m HDMI Cable compatible with HDMI 2.1, 2.0a, 2.0, 1.4a (Ultra HD, 4K, 3D, Full HD, 1080p, HDR, ARC, Highspeed with Ethernet) - PRO Series
by KabelDirekt

I just bought that off the rainforest and it works awesomely and looks good quality to...
was getting 4k @60fps with my old cable but flickering and corruptions and would only work @30fps without those issues

until i bought the above cable....

can do 4k @ 60fps @10 or 12 bit pannel @ chroma 4.2.2 or 4.4.4
without any issues at all and i bought the 7 meter cable they have quite a selection of sizes.

faheemrazzaq · 25 Oct 2016 at 09:23

ViRuS2k said:
KabelDirekt 5m HDMI Cable compatible with HDMI 2.1, 2.0a, 2.0, 1.4a (Ultra HD, 4K, 3D, Full HD, 1080p, HDR, ARC, Highspeed with Ethernet) - PRO Series
by KabelDirekt

I just bought that off the rainforest and it works awesomely and looks good quality to...
was getting 4k @60fps with my old cable but flickering and corruptions and would only work @30fps without those issues

until i bought the above cable....

can do 4k @ 60fps @10 or 12 bit pannel @ chroma 4.2.2 or 4.4.4
without any issues at all and i bought the 7 meter cable they have quite a selection of sizes.

What GPU do you use? I have just placed an order for this one. fingers crossed.

ViRuS2k · 25 Oct 2016 at 17:16

faheemrazzaq said:
What GPU do you use? I have just placed an order for this one. fingers crossed.

2x980TI`s in sli.

VincentHanna · 25 Oct 2016 at 19:02

ViRuS2k said:
KabelDirekt 5m HDMI Cable compatible with HDMI 2.1, 2.0a, 2.0, 1.4a (Ultra HD, 4K, 3D, Full HD, 1080p, HDR, ARC, Highspeed with Ethernet) - PRO Series
by KabelDirekt

I just bought that off the rainforest and it works awesomely and looks good quality to...
was getting 4k @60fps with my old cable but flickering and corruptions and would only work @30fps without those issues

until i bought the above cable....

can do 4k @ 60fps @10 or 12 bit pannel @ chroma 4.2.2 or 4.4.4
without any issues at all and i bought the 7 meter cable they have quite a selection of sizes.

Virus, I think you are confusing the 'YCbCr 444' setting on the Nvidia control panel with 4:4:4 chroma on the actual TV, they are two different things.

To enable Chroma 4:4:4 support on an LG OLED, first go in the 'General' menu, then enable 'HDMI ULTRA Deep Color' for the HDMI port that you are using. After, change the input icon to PC in the 'All inputs' menu, accessible thru the remote input button.