Are There Any 4K TV's (to be used as Monitor) Out There That Can Support 4k At 120HZ?

[Cassius101]

Eventually when I get the rest of my basement place finished, I am going to have an entertainment room for PC gaming and watching movies/using my computer. I will have a couch and a dual monitor set up, this will be probably be my secondary monitor.

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=8430969&csid=_61

It will probably be 300$ at least by Christmas time sales. The issue is this TV does not really support 4k at 120HZ, it supports 1080p at 120HZ though.

For my main gaming monitor, I really need a 4K TV that can support 4k at 120HZ but I can't find any at all. Does anyone know one that is available to purchase?

 

[toyota]

no such thing exists at this time

 

[alcoholbob]

Not until DP1.3 or HDMI 2.1.

HDMI 2.0 might support 120hz at 4:2:0 color sampling but it doesnt really matter since Nvidia HDMI 2.0 ports only support output at 4:4:4 currently.

 

[alcoholbob]

Anothr thing worth metioning is 4k120 takes an incredible amount of bandwidth. 4k60 at 4:4:4 is already limited to roughly 15 foot cable runs. 4k120 may require active cables for once, which will be pricey.

 

[Lyfer]

Wait until 8K TV's are out and then maybe 4K technology will mature.

 

[JDG1980]

Not until DP1.3 or HDMI 2.1.

HDMI 2.0 might support 120hz at 4:2:0 color sampling but it doesnt really matter since Nvidia HDMI 2.0 ports only support output at 4:4:4 currently.

As far as I can tell, no current HDMI 2.0 device even does 4k@60Hz with 4:4:4. People have tried various TVs that claim HDMI 2.0 compliance with the GTX 980, but keep getting chroma downsampling. I don't know whose fault it is (my guess would be the TV silicon and/or firmware), but it's very disappointing news.

 

[alcoholbob]

As far as I can tell, no current HDMI 2.0 device even does 4k@60Hz with 4:4:4. People have tried various TVs that claim HDMI 2.0 compliance with the GTX 980, but keep getting chroma downsampling. I don't know whose fault it is (my guess would be the TV silicon and/or firmware), but it's very disappointing news.

That would be news to me since I'm running 4k at 60hz on my gtx 980 via my LG 49UB8500, and the gtx 900 series currently do not support 4k60 at 4:2:0 (as people with HDMI 1.4 4k monitors have verified since upgrading from gtx 700 cards to gtx 900 cards that 3840x2160 no longer has 60hz option).

 

[x3sphere]

That would be news to me since I'm running 4k at 60hz on my gtx 980 via my LG 49UB8500, and the gtx 900 series currently do not support 4k60 at 4:2:0 (as people with HDMI 1.4 4k monitors have verified since upgrading from gtx 700 cards to gtx 900 cards that 3840x2160 no longer has 60hz option).

That LG is the only set that seems to be getting 4:4:4 with the new cards.

I have a Samsung HU8550 and still am limited to 4:2:0 chroma in 4K/60Hz. HU9000 owners have the same issue, as well as owners of the 4K Sony TVs.

No word from Samsung or Nvidia on the issue yet. However, I am in contact with the reviews editor over @ CNET and he will be testing this for his upcoming HU8550 review. If anything that will certainly put pressure on Samsung to fix it.

 

[alcoholbob]

Have you tried turning on "Deep Color" or "UHD Color" on your TV? I had to turn on "Wide Color Gamut" on my LG to get 4k60 working.

 

[x3sphere]

Have you tried turning on "Deep Color" or "UHD Color" on your TV? I had to turn on "Wide Color Gamut" on my LG to get 4k60 working.

Yes, UHD Color is enabled. On the Samsung sets, you also have to rename the input to PC to get 4:4:4 output. This has the side effect of disabling various settings in the TV menus, but at 4K/60Hz it does nothing - all settings are still available. That's why I think it is an issue on the TV firmware side.

 

[KaRLiToS]

No such thing as this.

But you can have 3 x 1440p monitors in surround at 144hz. (G-Sync)

This is
7680x1440 = 11.1 Mega Pixels

While the 4k is:
3840x2160 = 8.3 Mega Pixels

 

[DiogoDX]

I wouldn't hold my breath since even after so many years we still don't have 1080P TVs with 120HZ.

 

[tential]

I wouldn't hold my breath since even after so many years we still don't have 1080P TVs with 120HZ.

This is false there are a couple of TVs that do support this.

There also is the Vizio P Series that just came out that is supposed to support this with High Velocity Mode right?

 

[Cassius101]

That would be news to me since I'm running 4k at 60hz on my gtx 980 via my LG 49UB8500, and the gtx 900 series currently do not support 4k60 at 4:2:0 (as people with HDMI 1.4 4k monitors have verified since upgrading from gtx 700 cards to gtx 900 cards that 3840x2160 no longer has 60hz option).

How? You said it works for you then you said it doesn't support it, are you really running 4k at 60hz?

 

[alcoholbob]

How? You said it works for you then you said it doesn't support it, are you really running 4k at 60hz?

The GTX 900 series only support 4K at 60Hz at 4:4:4 chroma subsampling. The 700 series cards use a hack that output 4K60 4:2:0 through HDMI 1.4 ports to HDMI 1.4 4K monitors with SST scalers. The GTX 900 cards cannot output 4K at 60Hz into a HDMI 1.4 4K SST monitor because they will only transport at full 4:4:4 sampling, the current drivers do not provide a secondary mode with color compression, and will not go down to 4:2:0.

I am running 4K 60 at 4:4:4: through an HDMI 2.0 port as both my video card (GTX 980) and TV (LG 49UB8500) are fully HDMI 2.0 compliant. It is very obvious if you run at 4:2:0 as text, particularly colored text, is very hard to read, whereas I have no problems resolving text and using my TV as a monitor currently).

Is that clear enough?

 

[Cassius101]

The GTX 900 series only support 4K at 60Hz at 4:4:4 chroma subsampling. The 700 series cards use a hack that output 4K60 4:2:0 through HDMI 1.4 ports to HDMI 1.4 4K monitors with SST scalers. The GTX 900 cards cannot output 4K at 60Hz into a HDMI 1.4 4K SST monitor because they will only transport at full 4:4:4 sampling, the current drivers do not provide a secondary mode with color compression, and will not go down to 4:2:0.

I am running 4K 60 at 4:4:4: through an HDMI 2.0 port as both my video card (GTX 980) and TV (LG 49UB8500) are fully HDMI 2.0 compliant. It is very obvious if you run at 4:2:0 as text, particularly colored text, is very hard to read, whereas I have no problems resolving text and using my TV as a monitor currently).

Is that clear enough?

Yes, I am wondering if the AMD 295X2 can support 4k though, I am pretty sure it has HDMI 2.0 and it is a much better card than the 980.

http://www.bit-tech.net/hardware/graphics/2014/09/19/nvidia-geforce-gtx-980-review/8

The 980 will have 8gb versions later though, hopefully they will be out by Christmas.

 

[96Firebird]

The 295X2 does not have HDMI 2.0.

 

[Kippa]

Anothr thing worth metioning is 4k120 takes an incredible amount of bandwidth. 4k60 at 4:4:4 is already limited to roughly 15 foot cable runs. 4k120 may require active cables for once, which will be pricey.

Theoretically couldn't they make longer cables with digital repeaters built into them at certain points along the cable? This is purely from a technically point of view.

 

[Mand]

No such thing as this.

But you can have 3 x 1440p monitors in surround at 144hz. (G-Sync)

This is
7680x1440 = 11.1 Mega Pixels

While the 4k is:
3840x2160 = 8.3 Mega Pixels

This is
3 cables

While the 4k is:
1 cable

 

[alcoholbob]

Theoretically couldn't they make longer cables with digital repeaters built into them at certain points along the cable? This is purely from a technically point of view.

sure they can but what would be the cost is the question. Most people dont even buy cables and just use ones that come with their products. You can buy like 20-30 passive cables for the cost of one 1080p active cable. I wonder how much a 4k repeater will cost in the near future. It will be s boutique product for sure.

 

[alcoholbob]

This is
3 cables

While the 4k is:
1 cable

Its also 3 monitors separated by ugly bezels, and most of the real estate is wasted on fixed aspect ratio stuff like video. Cant enjoy 4k youtube vids

 

[Cassius101]

Well I don't think it would be worth buying this TV, it doesn't have a high contrast ratio. I plan on buying the Xbox one and the Halo Master Chief collection at christmas, that game is in 1080p anyway. This seiki television also has horrible sound, I think it would better to buy a larger 1080p TV than this set considering that I am going to buy a 4k TV in May anyway.

This is just a waste of money for me personally then, this TV is good if you want a cheap 4k but it isn't as good as the more expensive sets and it requires a lot of configuring to get the most out of it, a lot of firmware updates, the sound is also bad and the picture quality isn't as good as other higher end LED/4K tv's.