WEBVTT 00:00:00.000 --> 00:00:04.720 We have a whole video about NVIDIA DLSS and the cool features it offers, 00:00:04.720 --> 00:00:07.760 but according to the most recent Steam hardware survey, 00:00:07.760 --> 00:00:12.320 only 52% of you have a graphics card that supports DLSS. 00:00:12.320 --> 00:00:17.920 But what if I told you there's an open source alternative that any modern GPU can use? 00:00:18.400 --> 00:00:26.320 What? It's called AMD's FidelityFX Super Resolution, or FSR, and version 3.1 just came out. 00:00:26.400 --> 00:00:31.840 So, lest you think we're ingredients shills, let's talk about how FSR works, 00:00:31.840 --> 00:00:36.880 how it compares to the aforementioned DLSS, and how to enable it in your favorite games. 00:00:36.880 --> 00:00:43.120 Like DLSS, the overall idea of FSR is to increase performance, that is, frame rate, 00:00:43.120 --> 00:00:48.400 by rendering the game at a relatively low resolution, then using upskilling techniques 00:00:48.400 --> 00:00:52.960 to fill in the blanks and produce the final image you see on your display. 00:00:53.040 --> 00:00:59.280 NVIDIA's DLSS accomplishes this by training a proprietary AI model using a supercomputer, 00:00:59.280 --> 00:01:07.280 but how does FSR do it? FSR has actually gone through three revisions, the first of which, FSR1, came out in 2021, 00:01:07.280 --> 00:01:12.640 and is primarily concerned with correctly reconstructing the edges of objects on the screen. 00:01:12.640 --> 00:01:17.920 The algorithm does this by comparing gradients in the original image to see how to reconstruct 00:01:17.920 --> 00:01:23.840 edges in the upscaled image. After this is done, the image is sharpened and sent to your screen. 00:01:23.840 --> 00:01:29.040 FSR1 typically gives better results than more common upscaling techniques that displays would 00:01:29.040 --> 00:01:34.480 perform on their own, but it does require you to have anti-aliasing enabled in your game settings, 00:01:34.480 --> 00:01:37.760 which means your GPU has to do some additional legwork. 00:01:37.760 --> 00:01:44.400 But FSR2, released in 2022, can work on more parts of the image than just the edges. 00:01:44.400 --> 00:01:50.720 Unlike FSR1, FSR2 is a temporal upscaler, which is a fancy way of saying it analyzes 00:01:50.720 --> 00:01:54.640 previous frames to determine what the next frame should look like. 00:01:54.640 --> 00:02:00.320 This is closer to how DLSS works and provides a significantly nicer image than FSR1, 00:02:00.320 --> 00:02:08.400 including more detailed textures. After FSR2 applies its upscaling algorithm, which works without anti-aliasing being on in your game 00:02:08.400 --> 00:02:14.560 first, it then does its own anti-aliasing pass that takes the place of the built-in TAA of 00:02:14.560 --> 00:02:21.040 whatever game you're playing. The downside of FSR2, though, is that because it relies so much on previous frames, 00:02:21.040 --> 00:02:26.320 it can produce ghosting in fast-paced games, since the previous frames might be very different 00:02:26.320 --> 00:02:29.360 from the current frame FSR2 is trying to upscale. 00:02:29.360 --> 00:02:36.720 Not all frames are the same, I learned that the hard way. But even though FSR hasn't even been out for all that long, there's already an FSR3. 00:02:36.720 --> 00:02:42.160 FSR3 is based on FSR2, but it also includes frame generation. 00:02:42.160 --> 00:02:46.480 So it's a little bit like how motion interpolation on a TV works, 00:02:46.480 --> 00:02:52.320 where frames are completely created and inserted between actual frames from the source content 00:02:52.320 --> 00:02:58.800 in order to increase the apparent frame rate, aka the thing I turn off on every single TV I ever use, 00:02:58.800 --> 00:03:06.560 except in this case you want it because games. Reviews on the image quality of FSR3's frame generation have generally been good, 00:03:06.560 --> 00:03:11.600 but it should be noted that enabling frame generation can result in higher latency between 00:03:11.600 --> 00:03:17.680 a controller input and what happens on your screen. But whether you'll notice comes down to what kinds of games you play, 00:03:17.680 --> 00:03:23.280 how sensitive you are to lag in general, and whether you're using FSR3 in computationally 00:03:23.280 --> 00:03:27.920 heavy scenes where the frame rate starts to dip, which can make latency worse. 00:03:27.920 --> 00:03:33.520 It should also be noted that issues have been reported when trying to use FSR3 image generation 00:03:33.520 --> 00:03:39.120 with variable refresh rate. AMD recommends that you try and keep your game's frame rate within your monitor's 00:03:39.120 --> 00:03:42.720 refresh range to prevent tearing, so your mileage may vary. 00:03:42.720 --> 00:03:48.320 On a more positive note, FSR3 does add its own native anti-aliasing mode, 00:03:48.320 --> 00:03:52.800 which can be used without upscaling if you want an alternative to traditional AA 00:03:52.800 --> 00:04:00.160 without the other FSR features. The frame generation feature can also be used with a different upscaler, such as DLSS, 00:04:00.160 --> 00:04:07.120 in FSR revision 3.1 and later. Good news if you have a RTX 2000 or 3000 series GPU, 00:04:07.120 --> 00:04:12.320 as DLSS's competing frame generation technology is only officially supported with 00:04:12.320 --> 00:04:19.840 4000 series cards. You're welcome, NVIDIA. No matter what flavor of FSR you're using, turning it on is just a matter of toggling 00:04:19.840 --> 00:04:24.640 it in the game settings menu. But keep in mind that there does need to be developer support for it, 00:04:24.640 --> 00:04:30.880 so it won't work with every single game. But AMD does offer a solution called Radeon Super Resolution, 00:04:30.880 --> 00:04:35.840 which is similar to FSR1, but will work in any exclusive full-screen game 00:04:35.840 --> 00:04:38.640 without that game's developers doing any extra work. 00:04:39.280 --> 00:04:43.920 But you need an AMD RX 5000 series GPU or newer to run it, 00:04:43.920 --> 00:04:49.200 as it's part of the AMD graphics driver, and only AMD GPUs use that. 00:04:49.200 --> 00:04:52.880 Have you tried FSR in any of your games? What did you think about it? 00:04:52.880 --> 00:04:58.480 We're dutch. Let us know in the comments. And if you want to know more about NVIDIA's competing solution, DLSS, 00:04:58.480 --> 00:05:01.680 go watch this video next. We're just so curious. 00:05:02.960 --> 00:05:04.720 What's going on out there?