High Speed HDMI Cable 4K@60hz 10bit

[jpaul]

If it is failing to re handshake (4k60fps4:2:0) when games go full screen using Direct3d11 interface, then will it also occur for full-screening other software that can use d3d such as mpc-hc.
Maybe there are windows 10 drivers, as well as the tv firmware and nvidia drivers that might be part of the problem.

(as a heads-up, for tv checkout, are there any Direct3d12/dx12 benchmarks or games that might be worth running - this is meant to be the windows 10 benefit - no ?)

 

[faheemrazzaq]

Ok I have called up JL and they will be taking the TV back. All the low-mid range TV's are slapping the HDR label without having a 10 bit panel and just the ability to process the content. I have decided to only look at 10 bit 120hz panels now. This means I may have to double my budget and I am willing to do so. What are my options now? Samsung KS8000, Sony Xd90 series? 2016 range Panasonic's and LG's any good?

 

[theone8181]

4k@120hz not possible at all with current HDMI limitations.

Does anything have the power to actually run at 120 fps at 4k? What about DVI or is it a limit on t he hdmi on tv and graphics card?

 

[deuse]

Ok I have called up JL and they will be taking the TV back. All the low-mid range TV's are slapping the HDR label without having a 10 bit panel and just the ability to process the content. I have decided to only look at 10 bit 120hz panels now. This means I may have to double my budget and I am willing to do so. What are my options now? Samsung KS8000, Sony Xd90 series? 2016 range Panasonic's and LG's any good?

Most will be 8Bit+. I did find a Panasonic TV with a 10Bit panel but the reviews was rubbish.

Then you have 120Hz 10Bit driving a 8Bit panel.

 

[VincentHanna]

Get the Samsung KS8000.

 

[faheemrazzaq]

That's right. Most of the 120hz panels are 8bit or 8bit+frc. Only top of the range TVs for every line up feature 10 bit and easily cost around 1500£ for a 55" panel. How much I am losing on HDR detail by just settling for a 8 bit panel instead of 10 bit?

 

[faheemrazzaq]

Ok I sent the Sony 55xd7005 back and picked up a Samsung 55KS7000. It is going at an amazing price at the moment given that it's a 10 bit panel.

Unfortunately I am having the same issue as with Sony; i.e. no signal 4K@60hz 4:4:4. I have set HDMI UHD 'ON' and also tried selecting the HDMI input as PC. It can only do 4K@30hz 4:4:4. Very same symptoms to be honest.

Leaves me every reason to suspect my gpus now. I have reinstalled windows to eliminate any issues there but no luck. I have two gtx 980's and same result when connected to both. Really hitting a brick wall now.

 

[betaspin]

The Samsung 55KS7000 with HDMI UHD switched on and HDMI input set as PC does 4K@60Hz 4:4:4 8bit when connected to a GTX 1050Ti. However, one needs a proper HDMI 2.0 cable, as the required bandwidth is about 14 GBit/s.

 

[faheemrazzaq]

The Samsung 55KS7000 with HDMI UHD switched on and HDMI input set as PC does 4K@60Hz 4:4:4 8bit when connected to a GTX 1050Ti. However, one needs a proper HDMI 2.0 cable, as the required bandwidth is about 14 GBit/s.

Well I am through 4 different cables as of now of varying lengths; all high speed rated at 18gbps and over. The shortest one I have is 1.8m long. I am going to try it with a 0.9m cable.

 

[jpaul]

As you say maybe the gpu's or pc has a problem (since 4K@60hz 4:4:4 8bit, although it never works on TV's, does work on your 4k monitor until you full screen the game) can you remove one 980 and try that ? maybe the power supply is having issues

 

[Nikumba]

Have you tried taking one of the 980's out of your machine and tested on a single card?

 

[faheemrazzaq]

Have you tried taking one of the 980's out of your machine and tested on a single card?

I disabled SLI and tried them one by one. Since it is a water cooled system, its not all convenient to take out the gpus

 

[Nikumba]

I disabled SLI and tried them one by one. Since it is a water cooled system, its not all convenient to take out the gpus

Ah fair enough, one option would be to disable one card in device manager, reboot and test.

 

[faheemrazzaq]

As you say maybe the gpu's or pc has a problem (since 4K@60hz 4:4:4 8bit, although it never works on TV's, does work on your 4k monitor until you full screen the game) can you remove one 980 and try that ? maybe the power supply is having issues

I don't want to go down the avenue of physically removing the gpus as they are water cooled and it will be a lot of hastle taking everything out. PSU shouldn't be an issue as system performs without any problems when DP is being used.

 

[faheemrazzaq]

The Samsung 55KS7000 with HDMI UHD switched on and HDMI input set as PC does 4K@60Hz 4:4:4 8bit when connected to a GTX 1050Ti. However, one needs a proper HDMI 2.0 cable, as the required bandwidth is about 14 GBit/s.

Can you confirm what Nvidia driver version you are on? What cable?

As I said before I have tried 4 different high speed hdmi cables and no luck. Just received and tried with a 0.9m long Amazon Basics High Speed cable and still no go. Only improvement with this shorter cable is that instead of no signal, screen flashes and display every 5 seconds or so when doing 4K@60hz 4:4:4.

 

[faheemrazzaq]

Ah fair enough, one option would be to disable one card in device manager, reboot and test.

Yes will give that a go

 

[bemaniac]

My KS8000 went back due to losing signal all the time on 4k60 4:4:4. Glad it wasn't just me.

The Sony android tvs like mine all stutter 4k60 4:4:4 from a pc every now and then but it's better than the total non compatibility of the one-connect box on the Samsungs. (only one I've not heard go bad yet is the KS9000 which is £1500 for 49" but probably the same)

Otherwise you've got Panasonic but only the DX802B £1300 and DX902B £2000 are good enough one is 8 bit with some zonal dimming edge lit and one is 10 bit with full array dimming (although it's actually 512 zones)


Or........................it could be our 980s....................................I use EVGA do you?

 

[faheemrazzaq]

My KS8000 went back due to losing signal all the time on 4k60 4:4:4. Glad it wasn't just me.

The Sony android tvs like mine all stutter 4k60 4:4:4 from a pc every now and then but it's better than the total non compatibility of the one-connect box on the Samsungs. (only one I've not heard go bad yet is the KS9000 which is £1500 for 49" but probably the same)

Otherwise you've got Panasonic but only the DX802B £1300 and DX902B £2000 are good enough one is 8 bit with some zonal dimming edge lit and one is 10 bit with full array dimming (although it's actually 512 zones)


Or........................it could be our 980s....................................I use EVGA do you?

I got Galax hall of fame 980s. Since others are able to do flawless 4K 60hz 4:4:4 on the similar TVs, my bet is on either nvidia drivers or 980's. I got exact same symptoms on both TVs that I have tried with my PC.

 

[betaspin]

Can you confirm what Nvidia driver version you are on? What cable?

This is on 375.70 WHQL (375.86 WHQL is out today but I still have not tried it). The cable is a Cablesson one certified for HDMI 1.4a (15.2 gbps).

There is no stuttering so far as I can see, and the image is very stable. Perhaps the 10 series Nvidia cards support HDMI 2.0 a bit better than the 9 series.

 

[bemaniac]

This is on 375.70 WHQL (375.86 WHQL is out today but I still have not tried it). The cable is a Cablesson one certified for HDMI 1.4a (15.2 gbps).

There is no stuttering so far as I can see, and the image is very stable. Perhaps the 10 series Nvidia cards support HDMI 2.0 a bit better than the 9 series.

That must be it - I reckon these card which I bought on the exact launch day of the 980ti possibly have a lower revision. I might mess about with the bios from other newer released evga cards with same boards.

when I had the Samsung I tried so many expensive cables and none fix the problem and swapping the tv wont fix the problem. Upgrading to a 1080 will though I reckon.