2020 LG OLED CX-GX Owner's Thread + FAQ (Posts 1-6) - No Price Talk - Page 25 - AVS Forum | Home Theater Discussions And Reviews
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post #721 of 6863 Old 03-28-2020, 06:51 AM
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Quote:
Originally Posted by wesslan1 View Post
So cinema is 100% like Filmmaker mode on CX? As that is touted to be the most accurate one with 100 nits and no truemotion.
From what we can tell, Filmmaker PM is just another expert picture mode like HDR Cinema, SDR ISF, with all processing turned off except Real Cinema. You can go into FM PM and turn on any processing in the user menus you like to customize it if you want. FM PM can be triggered automatically from a source signal. Many people have thoughts about this PM but for an average consumer who is not savvy about the different picture modes and who maybe leaves the set in the default Standard PM, Filmmaker PM is a way to automatically switch to an expert PM with all the picture processing turned off. Maybe someone will find some picture processing in other expert picture modes like ISF Dark that's not in Filmmaker but I've not seen or heard this yet.
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post #722 of 6863 Old 03-28-2020, 07:28 AM
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Quote:
Originally Posted by NintendoManiac64 View Post
If you drop the refresh rate to 100Hz but retain the 3840x2160 resolution, are you able to then increase the chroma resolution to 4:2:2, or more realistically increase the bitdepth to 10bit?
No, 4:2:0 is all you get.
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post #723 of 6863 Old 03-28-2020, 07:41 AM
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What is the G-sync refresh range on these units?? Any different than on the C9?
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post #724 of 6863 Old 03-28-2020, 08:11 AM
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40-120hz g-sync, not sure what C9 had.
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post #725 of 6863 Old 03-28-2020, 08:31 AM
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Quote:
Originally Posted by NintendoManiac64 View Post
Do keep in mind that the XB1/PS4 have single-threaded CPU performance comparable to a 17 year old high-end CPU or 14 year-old mid-range CPU (~2GHz Athlon 64) and multi-threaded performance comparable to a 12-year old high-end CPU (~3GHz 4c/8t Nehalem).

The XBSX/PS5 by comparison have CPU that's almost identical to the Ryzen 3700X which is relatively high-end ~$300 CPU that launched only 9 months ago and easily has 4x the single-threaded performance before any manual optimization due to the combination of having 2x the clockrate and 2x the IPC, and multithreaded-wise these are 8core/16thread CPUs rather than the plain-old 8core/8thread CPUs in the XB1/PS4.

One key point to consider is IPC aka "performance per clock". At the time when the XB1/PS4 launched, the then-fastest CPU architecture (Haswell) had IPC that was around 1.75x faster than the CPU architecture found in the XB1/PS4 (Jaguar). But as of this moment, the CPU architecture found in both the Ryzen 3700X and the XBSX/PS5 (Zen2) has the greatest IPC of any desktop CPU to date (though by the time the consoles launch, Zen3 will likely be available on the PC which is going to farther improve IPC by some currently unknown amount, and that's without considering Intel's mobile-only Ice Lake CPUs).

The only CPUs on PC that are faster than the 3700X are because they either have higher clocks, more cores, or a combination of both - and neither are really options at the time for consoles since they'd eat too much into the power budget or would require having twice as many CPU cores which would blow up the die size and make things overly expensive (the Zen2 architecture requires that cores come in sets of 8, so if you wanted 12 cores you have to physically include 16 and then disable 4 of them).

Agree about the CPU in the PS4/XBone being significantly underpowered. However, I still expect devs to target a level of visuals that will make a steady 60 fps difficult to achieve at 4k. Running at a locked 60 fps is a high bar and one that would require enough headroom that significant portions of a game could be rendered at over 100 fps. I hope to be proven wrong, but I think there is more demand for higher quality visual effects in the console market rather than the very high frame rates that are expected from high-end gaming PCs.
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post #726 of 6863 Old 03-28-2020, 08:51 AM
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Quote:
Originally Posted by schmiggyjk View Post
I can relate, it was only a year and a half ago that I bought the C8 on sale and did a CITI price rewind on it. I wanted a 77", but those were definitely out of budget for me at the time. Hopefully that wont be the case this fall, with its lesser MSRP already.


Get the bigger TV if its in your budget.
Exactly, don't put yourself in the poor house for it, however buying one set now compared to the wrong set now and the right set later call be very costly.

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Originally Posted by fatuglyguy View Post
Does anyone think it would be an appreciable difference between this and my A1E? Been very happy with it but you know how it goes. Would honestly probably wait to see what Sony announced to replace the A9G but the CX seems mighty attractive for the price.
A1E to CX would probably be close to a side step, except HDMI 2.1 and some other small upgrades.
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post #727 of 6863 Old 03-28-2020, 08:59 AM
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Quote:
Originally Posted by wesslan1 View Post
40-120hz g-sync, not sure what C9 had.

Does this work in HDr? Can you send from say nvidia rtx a 4:2:0 and get 4k 120?

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post #728 of 6863 Old 03-28-2020, 09:00 AM
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Quote:
Originally Posted by Antarius View Post
No, 4:2:0 is all you get.

So why is HDR not working? Did you fix the registry if nvidia to support custom
Resolutions?
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post #729 of 6863 Old 03-28-2020, 09:02 AM
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Any word on lip sync issues? Biggest disappointment on my C8...waiting to upgrade hopping CX to have finally solved it!
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post #730 of 6863 Old 03-28-2020, 09:34 AM
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Originally Posted by Cleveland Plasma View Post
Exactly, don't put yourself in the poor house for it, however buying one set now compared to the wrong set now and the right set later call be very costly.
This need not only apply to size or features but also improved QC. It's a money sinkhole no matter how you look at it.
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post #731 of 6863 Old 03-28-2020, 10:42 AM
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Quote:
Originally Posted by sjchmura View Post
So why is HDR not working? Did you fix the registry if nvidia to support custom Resolutions?
No idea why. It is probably not supported in that mode as it is not part of a standard.
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post #732 of 6863 Old 03-28-2020, 10:44 AM
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So you have only get HDR to 60hz?

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post #733 of 6863 Old 03-28-2020, 11:48 AM
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Quote:
Originally Posted by sjchmura View Post
So you have only get HDR to 60hz?
Currently, yes.

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post #734 of 6863 Old 03-28-2020, 12:01 PM
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Originally Posted by MrSniper1401 View Post
I plan to upgrade mine for the gaming features. Sony has been strangely lacking when it comes to the gaming features of their tvs
Sony fans are holding their breath for the A9H, hoping beyond all hope, that it brings something more to the table. If it's just a gussied up A9G, then the CX is the OLED to buy.
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post #735 of 6863 Old 03-28-2020, 12:54 PM
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Quote:
Originally Posted by Antarius View Post
No, 4:2:0 is all you get.
And what about 10bit at 100Hz?
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post #736 of 6863 Old 03-28-2020, 01:23 PM
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Originally Posted by 8KCRT View Post
Sony fans are holding their breath for the A9H, hoping beyond all hope, that it brings something more to the table. If it's just a gussied up A9G, then the CX is the OLED to buy.
I definitely would like to see if they've cooked up anything special to justify what will undoubtedly be a pretty substantial price differential compared to the CX. The way I see it, the CX according to jjref and others has caught up to the A9G in terms of both upscaling and motion performance which would already be an upgrade over my A1E. Then I look at the enhanced gaming features, low input lag, and fantastic price of the CX which makes it really hard to justify going Sony again if all they're gonna offer is slightly better upscaling compared to their X1 Ultimate chip in the A9G. Now maybe if Sony has not only improved their upscaling but also done something similar to Panasonic and did something to customize the panel to offer better brightness/color volume in addition to offering similar gaming features/input lag as the LG then I'll have to take a hard look at the A9H or whatever it will be called.
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post #737 of 6863 Old 03-28-2020, 02:03 PM
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Originally Posted by Rysa_105 View Post
How is dolby vision performance on this tv compared to C9, when using the more accurate Cinema preset? On another forum, I was reading DV in Cinema looks slightly less bright on the CX than the C9. Anyone care to confirm?
DV looks the same on both. Any differences with be accounted for in panel variances for peak luminance (primary) and calibration/EOTF tracking (secondary).
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post #738 of 6863 Old 03-28-2020, 02:04 PM
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Originally Posted by Micolash View Post
What are your thoughts so far on the "high" BFI setting? Does it appear to improve motion clarity beyond BFI on current OLEDs? Similar amount of flickering?
Behaves the same way as prior years’ BFI.
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post #739 of 6863 Old 03-28-2020, 02:11 PM
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Originally Posted by NintendoManiac64 View Post
If you drop the refresh rate to 100Hz but retain the 3840x2160 resolution, are you able to then increase the chroma resolution to 4:2:2, or more realistically increase the bitdepth to 10bit?
The default HDMI timings for 100Hz are such that it uses the same bandwidth as the corresponding 120Hz mode.

If you use the 120Hz timings but at 100Hz 10-bit and drop Htotal a little (Htotal = 4250, Vtotal = 2250, Hblank = 410 and Vblank = 90) you can squeeze under the 18Gbps limit at 17.93Gbps.

Will the TV accept that? ¯\_(ツ)_/¯

Edit: Almost forgot, going from 4:2:0 to 4:2:2 doubles the bandwidth requirement so not possible at 100Hz even with reduced timings.
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post #740 of 6863 Old 03-28-2020, 02:26 PM
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Has anyone confirmed if the new LG CX uses a similar method as the Panasonic GZ2000 to decrease the chance of Image retention/burn in?
In this review of the GZ2000 , the reviewer HDTVTest, mentions how there is a metal slab between layers to better the heat dispersion on the OLED panel and thus make the retention far less likely.
Any such technology in the CX? It is mentioned at around 10min. Perhaps such a technology/metal slab is unnecessary on the CX given it is less bright compared to the GZ2000?

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post #741 of 6863 Old 03-28-2020, 02:47 PM
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I am contemplating getting the 77" CX when it releases to replace a 65" Panny V10 plasma, but am a bit worried about how it might handle 480P upscaling. I was doing some searches on C9 upscaling of SD, and found some responses of "it looks like 480P", and many that basically said it looked so much worse than their previous TV (both 4K and 1080 TVs).

I get that a 4K panel has to do a lot more uspcaling than a 1080p of 480 material, so I am not expecting miracles, just something satisfactory. We have a lot of DVDs that we are never going to replace with Bluray or UHD, so 480P will be part of our viewing for a long time. We recently replaced an upstairs TV with a 4K 65" TCL R613. If I am reasonably satisfied with 480P from an Oppo BDP-93 to the TCL (sitting at 10 ft back), do you think I would be equally satisfied with 480P on a 77" CX (or C9 even) from an Oppo UDP-203 from 12" back (similar field of view)?

I would hate to spend all that money and not like how it looks for 30-40% of our viewing.

Thanks!

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post #742 of 6863 Old 03-28-2020, 03:37 PM
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Has anyone experienced any tinting issues on any currently available CX sizes? I saw a couple that had clean panels which is fantastic news, but wondering about any others. I had to return my 65" C9 due to awful magenta tinting. A rather large amount of owners of the 65C9 had tinting issues from the C9 owners thread. Hoping I don't have to deal with this on the 77CX.
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post #743 of 6863 Old 03-28-2020, 04:01 PM
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Originally Posted by sbarnhar View Post
I would hate to spend all that money and not like how it looks for 30-40% of our viewing.
The problem is pretty unavoidable, and if you think like that, you'll never buy a new TV unfortunately.

When you become used to 4K HDR picture quality, which is something far more impressive than what you're used to now, it sets a new "default" expectation. Later, when you watch any SD content upscaled to 4K on your new TV, it will look way worse than (for example) the HD-to-4K upscaled content, or the 4K content which you'll be watching daily, for the other 60%-70% of your viewing. I wouldn't think that - when you get excited about how amazing HDR looks - you'll only watch it for 70% of the time. You will seek it out as much as possible.

On the times you get nostalgic and dust off an old DVD to re-watch, you may then start to think to yourself "When I watched this DVD on my old TV, it didn't look this bad!". But it'll be because in your mind, you are seeing a big drop in quality compared with the 4K quality you are now used to, and your brain is extrapolating that back to your memory of what "the same thing" used to look like the last time you saw it.

The actual scaling from SD-4K will likely be just as good or better than your current TV, but it's not only trying to scale 1/16th of the screen up to full screen, it will also show you every imperfection, every MPEG artefact, of that original image much more clearly than it's possible to display those imperfections on your current TV. Something else which will lead you to think it's different/worse than your memories of the same DVD watched on previous TV.

I think there is far too much attention on scaling. Yes it's needed for the old back catalogue. But it can't/shouldn't be the driving factor in a TV purchase. You can assume that it's very good, and it does the best it can but everyone needs to be realistic. You are expecting the TV to scale an 0.4MP image up to 8.3MP (megapixels, in camera terms!). Another way of looking at it is the maximum 10Mbps video bitrate, in the ancient MPEG2 codec, of a DVD. The picture is compressed to 4% of its original size. In terms of 4K, that's now 0.2% of the size of the eventual picture (full 4K resolution). in a combination of upscaling and MPEG expansion, you're asking for the miracle of 99.8% of the pixels to be unpacked, expanded and interpolated. That's a very big [thing to] ask of any technology.

Ah. To address your question now that I've re-read your post - yes, I think you would be satisfied. You do seem to understand the limitations
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post #744 of 6863 Old 03-28-2020, 07:18 PM
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A few more observations.

[email protected] 4:2:0 8 bit breaks dolby vision playback. I can reproduce it every time. Switch screen to that mode in nvcp, turn off tv, turn back on - nothing will play in dolby vision. Need to restart TV to get it working again.

I could definitely see elevated blacks in built-in vudu app. Black bars are not so black. But on shield tv everything is solid black like supposed to be.
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post #745 of 6863 Old 03-28-2020, 08:40 PM
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It seems to be the same pattern every freaking year of the consumers doing beta testing for LG.
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post #746 of 6863 Old 03-28-2020, 08:50 PM
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Quote:
Originally Posted by 8KCRT View Post
Sony fans are holding their breath for the A9H, hoping beyond all hope, that it brings something more to the table. If it's just a gussied up A9G, then the CX is the OLED to buy.
Not if you're waiting for the 48 inch screen. These will be a must buy for a lot of people. Myself included.
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post #747 of 6863 Old 03-28-2020, 08:55 PM
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Is the 48" still coming late May, early June. Could it be possible it come out earlier?

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post #748 of 6863 Old 03-28-2020, 09:22 PM
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Originally Posted by Zumb View Post
Any word on lip sync issues? Biggest disappointment on my C8...waiting to upgrade hopping CX to have finally solved it!
What type of content do you have those issues with? I have it on my B6 with the Apple TV 4K and Dolby Vision content

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post #749 of 6863 Old 03-28-2020, 09:56 PM
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Quote:
Originally Posted by MrSniper1401 View Post
I definitely would like to see if they've cooked up anything special to justify what will undoubtedly be a pretty substantial price differential compared to the CX. The way I see it, the CX according to jjref and others has caught up to the A9G in terms of both upscaling and motion performance which would already be an upgrade over my A1E. Then I look at the enhanced gaming features, low input lag, and fantastic price of the CX which makes it really hard to justify going Sony again if all they're gonna offer is slightly better upscaling compared to their X1 Ultimate chip in the A9G. Now maybe if Sony has not only improved their upscaling but also done something similar to Panasonic and did something to customize the panel to offer better brightness/color volume in addition to offering similar gaming features/input lag as the LG then I'll have to take a hard look at the A9H or whatever it will be called.
Sony and LG don't do custom panels, only panasonic and philips do. Only custom panel this year will be on HZ2000. If you're thinking that waiting for A9H will get you better brightness than the CX, forget it, A9H will be on similar lines as the A9G with minor processing improvements, addition of a couple new features (including hdmi 2.1) and changes to the tv design and remote controller. Based on sony's notorious history of intentionally avoiding to drive the oled panel as hard as other manufacturers by employing more aggressive ABL, I'm willing to bet the A9H's measurable panel peak brightness will be a little lower than the CX.
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post #750 of 6863 Old 03-28-2020, 10:07 PM
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It would be really nice to read from more owners than non owners talking about other brands,. This is an owners thread and not a speculation/comparison thread. I'm personally interested in the 77CX and want to see if it's worth upgrading my 77C8.
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