HDMI 2.1 (4K 120 FPS) | PCSPECIALIST

HDMI 2.1 (4K 120 FPS)

VinJol

Bronze Level Poster
Motherboard Gen.4 for AMD CPU have only HDMI 2.0 output.
But if we use a HDMI 2.1 cable to play on a 4K Tv 120hz with this motherboard... it allows it to play on 120 FPS?
 

SpyderTracks

Recluse
Moderator
Motherboard Gen.4 for AMD CPU have only HDMI 2.0 output.
But if we use a HDMI 2.1 cable to play on a 4K Tv 120hz with this motherboard... it allows it to play on 120 FPS?
It's not the motherboard that outputs, it's the GPU. All current GPU's have HDMI 2.1.

Then you'd need a compatible cable.

And the TV would need to have an HDMI 2.1 port as well (and obviously be able to support 120Hz). It's only some modern TV's that have support for 120Hz.
 

VinJol

Bronze Level Poster
"HDMI 2.1 has 48Gbps carry capacity, compared to just 18Gbps for HDMI 2.0. Now, the 18Gbps of HDMI 2.0 assumes video delivery with HDR, 4:4:4 chroma, and 10-bit color coding. At a resolution of 3840 x 2160, that would fill up the entire bandwidth with a maximum framerate of 60Hz, and often 4:4:4 won’t be possible, only 4:2:2. However, if we can force 8-bit color coding (16.7 million colors), no HDR, and 4:2:0 chroma subsampling, then 4K 120Hz actually turns out to “cost” about 16Gbps, which is technically possible on HDMI 2.0."

OK, it was not full 4k resolution with HDMI 2.0
 

SpyderTracks

Recluse
Moderator
"HDMI 2.1 has 48Gbps carry capacity, compared to just 18Gbps for HDMI 2.0. Now, the 18Gbps of HDMI 2.0 assumes video delivery with HDR, 4:4:4 chroma, and 10-bit color coding. At a resolution of 3840 x 2160, that would fill up the entire bandwidth with a maximum framerate of 60Hz, and often 4:4:4 won’t be possible, only 4:2:2. However, if we can force 8-bit color coding (16.7 million colors), no HDR, and 4:2:0 chroma subsampling, then 4K 120Hz actually turns out to “cost” about 16Gbps, which is technically possible on HDMI 2.0."

OK, it was not full 4k resolution with HDMI 2.0
Yeah, in real terms it’s 2k. I certainly wouldn’t recommend it, but then I wouldn’t recommend hooking a computer up to a TV for gaming unless it was one of the latest 120hz ones which do come with HDMI 2.1
 

leebee2110

Active member
Hey @SpyderTracks. I have the Nova with the RTX 2070. I was planning on buying an LG CX with the 120hz display for when I'm at home.

The plan is to run it on 1440p up to 120hz though as the card wouldn't manage 4K for obvious reasons. Is it safe to assume because it's a 2070, it'd have HDMI 2.0 as opposed to 1.4? I can't find anything on my order with the actual spec of the HDMI or do you it best to go to PCS direct?
 

Nursemorph

Author Level
Hey @SpyderTracks. I have the Nova with the RTX 2070. I was planning on buying an LG CX with the 120hz display for when I'm at home.

The plan is to run it on 1440p up to 120hz though as the card wouldn't manage 4K for obvious reasons. Is it safe to assume because it's a 2070, it'd have HDMI 2.0 as opposed to 1.4? I can't find anything on my order with the actual spec of the HDMI or do you it best to go to PCS direct?

I'd ask PCS directly as only they have access to specifics....I have had a look around but can't find anything on it...even the Clevo website doesn't list it (then again the Clevo website doesn't list much in the way of helpful information!)
 
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