NV GT630/730 does 4K60 over HDMI(1.4)!

[VirtualLarry]

Made this neat discovery today. AFAIK, these cards pre-date HDMI2.0 ports on NVidia cards.

I know that some time back, NV did a driver hack to allow 4K60 at a reduced color depth over HDMI 1.4.

I did notice some banding in the background of some YouTube vids @ 4K24.

OS is Win10 CU.

Edit: I know it's 4K60, because that's what my 4K UHD TV's OSD said.

Too bad AMD never implemented this workaround.

 

[nvgpu]

http://www.anandtech.com/show/8191/nvidia-kepler-cards-get-hdmi-4k60hz-support-kind-of

It's not real HDMI 2.0 on Kepler cards and it's pointless these days when GT 1030 can do real HDMI 2.0 4K 60Hz and have real fixed function HEVC & VP9 hardware decoders.

 

[wilds]

I was always indifferent about this. Mid range Kepler sucks at 4k60 gaming and Kepler could always do 4k24hz over display port and HDMI. I use my 650m to watch 4k blu rays which are 24fps so I don't really care.

Kepler is still used in a lot of notebooks for non gamers. Fake 4k60 is a feature they will take anyday!

 

[cbn]

4:2:0 will make it hard to read text, but that is still interesting.

 

[VirtualLarry]

4:2:0 will make it hard to read text, but that is still interesting.

I don't find that true at all, with my display. Then again, it is 4:2:0 anyways at 4K60 (even for an HDMI 2.0 signal, that can do 4:4:4).

 

[cbn]

I don't find that true at all, with my display. Then again, it is 4:2:0 anyways at 4K60 (even for an HDMI 2.0 signal, that can do 4:4:4).

Have you done the following test yet:

http://www.geeks3d.com/20141203/how...-chroma-subsampling-used-with-your-4k-uhd-tv/

 

[tential]

I don't find that true at all, with my display. Then again, it is 4:2:0 anyways at 4K60 (even for an HDMI 2.0 signal, that can do 4:4:4).

It's massively overblown man... Use it!

 

[cbn]

It's massively overblown man... Use it!

I noticed lack of 4:4:4 fairly quickly on one of my first TVs I tried to use as PC monitor.

 

[cbn]

Here is a video on how to use a cheap 4K TV as computer monitor:

He did get an improvement by switching to Game Mode (claimed to use the PC's processing power rather than the TVs). However, it didn't look perfect when he quickly scrolled down to the last four lines.

P.S. According to the video when Game Mode is selected all Smart TV functions are lost.

 

[cbn]

Deleted.

 

[cbn]

I don't find that true at all, with my display. Then again, it is 4:2:0 anyways at 4K60 (even for an HDMI 2.0 signal, that can do 4:4:4).

What do you have your HDMI port set as when using a HDMI 2.0 card?

PC?

Game mode?

According to this thread Game mode runs at 4:2:2 and PC mode 4:4:4 on Samsung 4K TVs. (Apparently Game mode achieves less latency but sacrifices Chroma...not sure if this is the same for all 4K TVs, but it does make sense to me that would true from a logical standpoint)

EDIT: If I am not mistaken this is the 4K TV you have---> https://www.amazon.com/Avera-40EQX10-Ultra-LED-Black/product-reviews/B01FRQGO9M

According to one of the reviews there is a setting called "Enhancement" which enables 4:4:4 at 4K 60 Hz.

 

[VirtualLarry]

According to one of the reviews there is a setting called "Enhancement" which enables 4:4:4 at 4K 60 Hz.

That's interesting. I've been running with that OFF.

Also, it seemed like, when I had my 7950 3GB card connected to one of them, at 4K30, that the TV was running at 4:4:4. But when I connected a different card, or maybe it was my Club3D active DP to HDMI2.0 adapter, running at 4K60 seemed to bump it down to 4:2:0.

My understanding of "Enhancement" mode, was that it applied that "smooth motion rate" stuff, and other unwanted stuff, if I was gaming.

I'll take another look at it though, if it will enhance my desktop text performance (readability), then I might turn it ON.

 

[nathanddrews]

Ensure you're actually getting 60fps by running the testufo.com frameskipping test...

 

[nathanddrews]

Edit: I know it's 4K60, because that's what my 4K UHD TV's OSD said.

You can't trust the OSD most of the time. Go here and take a photo of your screen with your phone or camera:
https://www.testufo.com/#test=frameskipping