Who is this 4070 for? Clearly for those who have a 3080, 3090, no, because it would be the same performance. The only difference would be the DLSS 3 or AV1. If you have a 3070 you may see a performance boost, but I don't know if it's worth the upgrade. It depends on your needs. If you stream and feel you need that AV1, then clearly, it will be a boost and a step up. AV1 is not only a feature for gamers, but also for video editors, because you can do encoding directly in AV1 instead of H265.