New 4K TV, but stuck at 30fps.

[Obsessive Power]

Hi,

I've just bought a new SAMSUNG UE40KU6470. I hooked up the an HDMI cable to it, but not the same HDMI cable as my previous 1080P TV, as it was too short.

Basically I have two problems. 1. Game mode is not working on PC. You can select it fine when on the Boot up screen and just before Windows loads, once Windows loads, it goes off.

I'm stuck at 30fps in games. In Windows my TV shows 3840 × 2160 60. As soon as I run a game, it says it's 3840 x 2160 30. I'm not even trying to play a game at that resolution. My game - in this case Fallout 4 - is set to 1920 x 1080.

What do I do to fix this? New cable? Windows settings??

Thanks in advance.

[Cyber2B]

Postat inițial de Kemosonian:

Postat inițial de Narukami:

This is a late response but if you have a Nvidia GPU do these settings

Go to Nvidia Control Panel
Click on display
Click on Resolution

Change the res to 1080p and the 30hrz to 60hrz.

HDMI isnt the problem, suprised some people are asking you to buy another HDMI cable.

OMG 3 years late now but this literally saved me after hours of things my new tv was just ♥♥♥♥ compared to my older tv (didn't have to do this with my older tv lol) Thank you so very much! :)

Man I feel old just look at this, has 3 years really past? Yw anyways

[infin]

Postat inițial de Narukami:

Postat inițial de Kemosonian:

OMG 3 years late now but this literally saved me after hours of things my new tv was just ♥♥♥♥ compared to my older tv (didn't have to do this with my older tv lol) Thank you so very much! :)

Man I feel old just look at this, has 3 years really past? Yw anyways

Still helpful even after all those years, solved my issues as well

[phindex]

Postat inițial de Sapph:

Postat inițial de TenzoG:

This is a late response but if you have a Nvidia GPU do these settings

Go to Nvidia Control Panel
Click on display
Click on Resolution

Change the res to 1080p and the 30hrz to 60hrz.

HDMI isnt the problem, suprised some people are asking you to buy another HDMI cable.

You're 2 years late with your response. This topic is from 2017.

Yeah, he said it was a late response. So what? People other than OP will have the same problem.

[C1REX]

I wonder why Nvidia keeps the legacy option to change resolution and refresh rate within the control panel when Windows should handle that. It seems like an unnecessary complication in my opinion.

[Léon Scarlet]

Do you have an 60 hertz cable ?

When i did that first with my ps4 cable it was because the HDMI cable was only capable of 30 hertz

a 4k 60 hz cable s affordable nowaday on amazon

[Azza ☠]

HDMI version 1. 4 cable has only enough bandwidth to carry a maximum 4K at 30Hz or compressed 4K at 60Hz.

That's your problem, the cable and data isn't compressed from your GPU (graphics card). It also won't support HDR (if your monitor has that).

It also matter of what your monitor colour bit-rate is set as: 8-bit or 10-bit, etc. Higher needs more bandwidth.

You would need at least HDMI version 2.0 cable to have transmission bandwidth of 18Gbit/s to support 4K at 60Hz native which can also support HDR.

HDMI 2.1 cable can support 8K at 60Hz or 4K at 120Hz with over 48Gbps.

DisplayPort 1.4 cable supports 8K at 30Hz, 5K at 60Hz or 4K at 120Hz with over 32.4Gbps. If you have a DSC-compatible monitor, you could also run it at 4K 144Hz.

Short answer: Get a DisplayPort 1.4 cable or HDMI 2.1 cable.

Note: If your graphics card is Nvidia and your monitor supports G-SYNC, use DisplayPort 1.4 to also support the G-SYNC. If it's a FreeSYNC monitor, use the HDMI 2.0 or 2.1.

EDIT: Just noticed how many times this topic has been necroed since 2017! I guess it's still valid for others however.

[Sigma957]

Don't get an HDMI 2.1 cable, just get an HDMI 2.0 for your 4k TV.
That's what I have for my PC.

[Bill]

This thread was quite old before the recent post, so we're locking it to prevent confusion.