Gadgetory

this monitor has been the root cause of a lot of criticism for Andes packs with the new Vega video cards primarily because it's known to have severe flickering issues and we've managed to reproduce them but the conditions for reproducing those issues really very heavily based on the card and what you're doing so it's not quite as simple as this thing flickers and today we are looking at the C 34 F 7 9 1 WQ Thank You Samsung for that easy to remember name so 791 is what we're looking at and we're testing it on the rx 500 series the Vega 56 and the Vega frontier edition with different driver branches to see how persistent the flickering issue is before getting to that this video is brought to you by synergy the software that lets you share a keyboard and mouse between multiple systems if you have limited desk space and multiple computers to command synergy removes the need for separate peripherals or a KVM and works as over the network software use our link below to get 50% off the basic or pro version most of the flickering stems from what Samsung calls their ultimate engine mode there are three modes ultimate engine standard and off for free sync where it's just disabled even in Samsung's manual they note that ultimate engine may cause flickering with this display so it's a known issue even to them ultimate engine widens the bandwidth provided to the ASIC on the panel driver which means that your variable refresh goes from 80 to 100 Hertz up to 48 to 100 Hertz so it expands the variable refresh rate range under free thinks so that it will work with lower frame rates there are plenty of other issues with this monitor as well we noticed a few weird patterns and behaviors when changing colors on the screens we have multiple different objects of high contrasting colors like a movie playback and then a black or a white webpage on the other side which sometimes cause color pattern changes and things like that but that's not really what we're talking about today because those are on Samsung side of things and it does impact the monitors value to certain users but we're really focusing on the precinct under the argument so with the flickering we can reproduce it here you're not going to see as much on that camera because of how the filming set up for me being in front of 2,000 LEDs but we have b-roll of it flickering that flickering is produced on an rx 580 and it can be produced with the oldest drivers and with the newest drivers that were ever available and are currently available for the rx 580 no problem whatsoever we can get it to flicker severely to the point where if you were going to buy this thing and you had a 580 I would tell you absolutely do not do it it's unless you don't care about precinct in which case why are you buying it anyway but it's not a good experience with freesync with a 580 with the drivers we've tested but there's an interesting caveat if we test Vega 56 we actually see these issues pretty much disappear and there are some differences with Vega frontier edition but with 56 we tried total war which is known to be just really terrible for flickering with this display we produce those results on the 580 you can see flickering in the menus sometimes you can see flickering in the campaign mode and in a lot of other places there's weird shadow flickering there are brightness changes all kinds of weird behaviors with the samsung Display and Polaris GPUs but with regard to flickering specifically couldn't reproduce it basically at all on Vega 56 we couldn't reproduce it in this demo which is an old Andy freesync demo from CES and really reliably produces the issue on the 500 series we couldn't reproduce it in the total war games in ashes of the singularity in gta5 and in this testing we did testing from about 30 fps all the way up to above and while at 100 Hertz or above 100 Hertz if we felt like expanding beyond what precinct would allow just to test it and the result was at all of those refresh rates and frame rates we couldn't visibly to the human eye produce the issue on 56 we could pick up flickering it with the camera but there are a whole lot of weird behaviors there like the camera shutter for example although at various different shutters we still saw flickering on the camera for Vega 56 but not to our eyes and regard a list of what the reason for that may be ultimately it's irrelevant if I can't see it if you can't see it three people here looked at it we could not see an issue with Vega 56 so if we can't see it on a camera can who cares there's clearly some weird reason there and it's cause because the camera is not a human eyeball so the issue seems to be non-existent on Vega 56 presently with the drivers we've tested which are the latest public drivers and the oldest press Branch of the drivers what happens if we go to Vega front erudition Vega frontier edition is known to be on as of its launch and older brands for drivers that stemmed from Polaris or at least Fiji or something older like that so throwing in a frontier edition card we got some interesting results the card at first looked like it wasn't stuttering or flickering rather at all and if it's not flickering at all then that kind of starts looking like it's some Vegas Pacific update but as we watched it a little bit longer we would occasionally see flickers pop up it wouldn't be sustained like we got on the 500 series but they would certainly appear and it was present in this demo its present in total war which we filmed and a couple of other places so with that being the case this is now a question of is the flickering occurring because of some Polaris chip level defect where freesync is just not working that well with Polaris in which case alright we free sync on this display particularly with ultimate engine since it expands the freezing range if that's the case that really kind of sucks for Polaris owners if it's not the case then it may be the situation that AMD can issue a driver update much like they did with Vega and resolve the flickering at which point where is the driver because it exists for Vega maybe it's just a time pin maybe the older cards are lower priority than Vega that seems probable at this point so we're not sure it seems like it this issue really I feel like has to be a chimp level issue or a driver level issue there's really no where else to look especially given the cards we've tested and with our test conditions and what we've experienced in testing it's hard to declare if it's chip level or driver level because with vega frontier edition we still kind of see the problem and that pushes us towards assuming a driver level change since flickering exists on vega frontier edition and not on 56 and they're the same architecture that said vega frontier edition is a really special kind of card that has all kinds of features disabled is broken in a lot of ways and probably shouldn't have shift at least in the state it did so it's hard to say if one of those hardware level differences in frontier versus rx is causing those or its drivers but all I'm telling you is the problem exists on the 500 series we've seen it which means it exists on the 400 series and probably well we know it exists on the fury ax as well matter of fact so all those complaints you've seen about flickering on the samsung display they're accurate it's not just because they're pointing a camera at the screen and unfortunately pointing a camera at the screen as stated isn't such an easy way to show the differences but depending on what you're looking at in our footage you you see two different kinds of flickering one of them that you'll see in the b-roll or have seen at this point in the b-roll is when the screen appears to flicker and we have scopes on this that show the response of how it flickers but it's only seen by the camera and that's on Vega 56 and the pattern of the flickering is more like a wave and again the human eye cannot see it we can't see it the other type of flickering is an entire screen flicker and this is the one that you need to actually be concerned about because that's what we see and it's clearly not an issue of human eye shutter speed or something like that that's the entire screen kind of going whiter or lighter color and then darker or dimmer and it's just flickering like crazy that's on a 500 series the scopes show that as well but it's a different pattern so that's what you make that distinction when you're looking at the footage of the 56 just know that we basically have to switch between things like phone cameras and our high-end camera because they don't detect things the way human eyes do but yes blue Korean is clearly an issue on Polaris it'd be great if Andy can take whatever they did for Vega and apply it to the layers so that owners of Polaris don't feel like they're left out in the cold and forgotten over Vega if Andy doesn't have that ability it's probably a hardware level difference in which case the very least we can tell you that as much as we disagree with the packs in general and the fact that they're probably just in place to make sure Andy doesn't lose money on Vega especially 56 the fact of the matter is if you're buying the pack with Vega because that's the only thing that the pack applies to not Polaris and you're getting this monitor with Vega then the issue really seems like it's nothing to be concerned about your planet's users from hilarious and take note but that's I think that pretty much wraps us up there's not a ton more we can do right now to test we've contacted AMD and asked hey do you guys know if anything in Vega has been updated to correct this issue and they're looking into it there are a lot of people at the company so not everyone is going to know the answer to that but we've asked and hopefully we'll have an answer for you but otherwise whatever you think about the packs whatever you think about this monitor in general flickering doesn't seem to be an issue on Vega 56 with the card we've tested we can't speak for all samples so if some of you have the card as well if any of you buy the monitor and use it with 64 which is different card than 56 please let us know what your results are you can easily test this and I'll tell you how this display this demo is hard to find now this windmill demo I'm going to upload it somewhere and I'll put a link to it in the description because it's the easiest way to reproduce the issue you can also use a total war if you have that go to the campaign map the next thing you need to do if you're using this demo is disable vsync make sure free sync is enabled go into the monitor OSD enable ultimate engine and set it to FPF sweep for the best results and observe the flickering if it exists you will see it at that point if it exists because it'll go 55 to 60 FPS and produce the issue if you using game to test it ideally we found that the best framerate range to reproduce the issue on Valerius is to sit between about 48 fps which is the low end of the Refresh range and maybe 60 65 you'll see the worst flickering in those instances if you're at a hundred or above it's just not going to show up in our experience so that's what you need to do to test it yourself and then you can toggle free sync on and off and if it goes away when it's off but it's there when it's on that means you're seeing the flickering issue and if you see that on Vega please let us know so that we can look into this further but as of our testing we don't see the problem on Vega so that wraps us up as always you can go to patreon.com/scishow helps out directly and gamers next has done that for more information as always gamers Nexus squarespace.com for a shirt like this one subscribe for more I'll see you all next time you