LG 48CX OLED - 4K 120 Hz

Ryan-3 · 16 Jul 2020 at 11:08

Mine was running 1080/1440p @ 120 FPS from my 1080 no problem last night, so I'm not sure what your issue may be.

Mind you, that's just what I set the output to be. I didn't enable anything like G Sync as far as I'm aware.

Dirk Diggler · 16 Jul 2020 at 11:12

Ryan-3 said:
Mine was running 1080/1440p @ 120 FPS from my 1080 no problem last night, so I'm not sure what your issue may be.

Mind you, that's just what I set the output to be. I didn't enable anything like G Sync as far as I'm aware.

I don't mean this in a grumpy way, but maybe I need to quote my post again for clarity.

Dirk Diggler said:
My Vega 64 doesn't seem to be capable of 1440@120Hz (goes to black screen with only sound), is this a limitation with AMD? I'm using a HDMI 2.1 cable and my 1080ti is fine with it.

Also, and apologies if it's been asked previously, is the HDMI 2.1 cable spec going to be fine for 4K@120Hz when new GPUs are released with the capability?

Woodsta888 · 16 Jul 2020 at 11:26

Dirk Diggler said:
@Woodsta888 this panel is both Gsync and Freesync compatible, however that's not what I was asking about in the post you quoted.

I know that it is in the manufacturers bumf that this is a freesync TV, but from the AVSforum thread by an OLED Guru I read this for the CX models;

new AMD FreeSync compatibility - available via a future firmware upgrade at the end of 2020 (the FreeSync level that is supported: "AMD FreeSync Premium" that provides: tear-free experience, at least 120hz refresh rate at minimum FHD resolution, support for low framerate compensation (LFC), low latency) - also is unknown if FreeSync will be made available to the C9;

If it works already then fine. But are you trying to run VRR whilst doing 1440p @ 120hz on the AMD card?

Dirk Diggler · 16 Jul 2020 at 11:31

Woodsta888 said:
If it works already then fine. But are you trying to run VRR whilst doing 1440p @ 120hz on the AMD card?

Yes, I'm trying to run VRR whilst doing 1440p@120. I've got Freesync premium enabled for the HDMI input and it's showing enabled in the Radeon software.

Ryan-3 · 16 Jul 2020 at 11:41

Does it work without VRR?

Dirk Diggler · 16 Jul 2020 at 12:11

Ryan-3 said:
Does it work without VRR?

Good shout, will set it back up and give it a go and report back.

Dave2150 · 16 Jul 2020 at 21:02

Woodsta888 said:
I know that it is in the manufacturers bumf that this is a freesync TV, but from the AVSforum thread by an OLED Guru I read this for the CX models;

new AMD FreeSync compatibility - available via a future firmware upgrade at the end of 2020 (the FreeSync level that is supported: "AMD FreeSync Premium" that provides: tear-free experience, at least 120hz refresh rate at minimum FHD resolution, support for low framerate compensation (LFC), low latency) - also is unknown if FreeSync will be made available to the C9;

If it works already then fine. But are you trying to run VRR whilst doing 1440p @ 120hz on the AMD card?

Read back a page or two in the thread, LG released the freesync enabled firmware a week or two ago

Works perfectly on even older Vega cards!

Dave2150 · 16 Jul 2020 at 21:04

Dirk Diggler said:
My Vega 64 doesn't seem to be capable of 1440@120Hz (goes to black screen with only sound), is this a limitation with AMD? I'm using a HDMI 2.1 cable and my 1080ti is fine with it.

Also, and apologies if it's been asked previously, is the HDMI 2.1 cable spec going to be fine for 4K@120Hz when new GPUs are released with the capability?

Works fine here with my Radeon VII. Both 1440P 120Hz and 4K 60Hz are flawless.

Would be interesting to see if Polaris (rx400, rx500) cards can also do Freesync via HDMI. Strange that all Vega and Navi cards can do it, while NV is locked down to only RTX cards.

Woodsta888 · 16 Jul 2020 at 22:41

Dave2150 said:
Read back a page or two in the thread, LG released the freesync enabled firmware a week or two ago Works perfectly on even older Vega cards!

Nice - I ain't got time to go back and read the whole thread. Obviously matey owner cant get it to work! We await your knowledge on such

You!

Dave2150, get it working for the man,

We await your advice, help the owner, not point out others.

WaylanderUK · 17 Jul 2020 at 12:08

Seriously considering one of these screens now that the new Samsung G9's have been put back. I have a 1080ti - can i use the freesync aspect of this screen? Ive heard mixed messages about to 1080ti being able to use gsync? Has anyone here used one with a sim racing rig - id be attaching it to the rig. I'd still prob prefer the G9 49 as its curved and lower pixel count... feedback appreciated!

diamount · 17 Jul 2020 at 12:23

WaylanderUK said:
Seriously considering one of these screens now that the new Samsung G9's have been put back. I have a 1080ti - can i use the freesync aspect of this screen? Ive heard mixed messages about to 1080ti being able to use gsync? Has anyone here used one with a sim racing rig - id be attaching it to the rig. I'd still prob prefer the G9 49 as its curved and lower pixel count... feedback appreciated!

Gync is currently only for Turing, (and Ampere once it releaes) only, not too sure about Freesync support (if the update has even been rolled out)

Dirk Diggler · 17 Jul 2020 at 12:42

WaylanderUK said:
Seriously considering one of these screens now that the new Samsung G9's have been put back. I have a 1080ti - can i use the freesync aspect of this screen? Ive heard mixed messages about to 1080ti being able to use gsync? Has anyone here used one with a sim racing rig - id be attaching it to the rig. I'd still prob prefer the G9 49 as its curved and lower pixel count... feedback appreciated!

I'm using mine with a 1080ti. You can use Freesync but obviously not with your 1080ti; Gsync isn't available with 1080ti - I'm running mine at 2560*1440@120fps until new cards arrive with capability for 4k@120fps.

Gaming is lovely and smooth, even though fps isn't always solid 120. I'm not seeing any screen tearing which I expected, so pleasantly surprised.

WaylanderUK · 17 Jul 2020 at 12:45

right so i cant use gsync or freesync? Hmmm... not great. I'd be forced to use vsync to reduce tearing?

Dirk Diggler · 17 Jul 2020 at 12:51

WaylanderUK said:
right so i cant use gsync or freesync? Hmmm... not great. I'd be forced to use vsync to reduce tearing?

You'll need to upgrade your 1080ti if you want Gsync, but to be honest it's a 4k 120Hz screen so a 1080ti is never going to do it proper justice, no card currently available will.

WaylanderUK · 17 Jul 2020 at 12:54

Yeah i guess the question is can i get vsync at 60fps on my driving games. Assetto corsa competizione is a beast. I can on a 3440/1440 so if i turn the detail down perhaps.

WaylanderUK · 17 Jul 2020 at 13:30

ive read a lot about how the 10 series does support gsync - are sites like this out of date or just plain wrong? I also read its displayport only for now... There are lots of them quoting 10 series gsync compatibility for freesync and gsync: https://blurbusters.com/gsync/supported-graphics-cards/

Even nvidias own site says the 10 series supports gsync? https://www.nvidia.com/en-gb/geforce/10-series/ look at the stats.

Am i going mad? lol

Also I see theres a BX model (OLED55BX6) of this screen at a much cheaper price - is it worth buying - has it still got 120hz VRR, struggling to find any specs.

Dirk Diggler · 17 Jul 2020 at 13:59

@WaylanderUK the 10 series supports Gsync, but it doesn't support it with this model TV as it doesn't have Display Port connections, only HDMI.

WaylanderUK · 17 Jul 2020 at 14:02

aaaah! i see lol. I knew it was too good to be true ;o)

ltron · 17 Jul 2020 at 15:18

WaylanderUK said:
aaaah! i see lol. I knew it was too good to be true ;o)

Also, Nvidia want you to get a new card.

jubei · 17 Jul 2020 at 15:19

Isn't freesync an open standard? Why can't the nvidia cards do freesync as well as gsync?