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A few more things I wanted to mention about RDNA 4 that I found interesting.

According to techpowerup, FSR4 needs an AI acceleration throughput of 779 AI TOPS. RX 9070 has around 1200 TOPS, RX 9070 XT has around 1500 TOPS. PS5 Pro has around 300 TOPs for reference but supposedly FSR4 is using a different implementation than Sony and Nvidia to achieve it's Ai upscaling. Frame Generation is the same as FSR 3 so it's not Ai generated but honestly, the Ai generation part of Nvidia's Frame Gen hasn't impressed me anyway. At the end of the day though, the proof will be in the pudding.

The new Radiance 2 Display Engine comes with major hardware updates that reduce GPU idle power draw in multi-monitor setups. The engine also comes with hardware flip-metering support (something NVIDIA also introduced with Blackwell, and which enables Multi-Frame Gen on the RTX 50-series). So Ai generated frames and MFG should be possible if they were to implement it in the future.

They also made improvements to their video encoders. With RDNA 3, their H264 was terrible unless you used the highest bitrates which streaming sites like Twitch would not allow for any company. So if you had RDNA 3 or older and you wanted to stream, it would look significantly worse compared to Nvidia GPUs, even from Maxwell generation. While RDNA 3 had AV1 encoding support that would fix H264 low bitrate issues, streaming sites like Twitch still only supports H264. So hopefully with RDNA 4, they have finally caught up with Nvidia as streaming is a big deal these days.

Anti-Lag 2 is now officially supported in... Drum roll please... 4 games! Meanwhile Reflex reached 100 games supported back in January 17... of 2024! Someone from Radeon team needs to get on that as not even Marvel Rivals supports Anti-Lag 2.

RDNA 4 also only supports 54 Gbps through it's Display Port interface similar to RDNA 3 (according to Linus) while RTX 5000 series supports the full 80Gbps bandwidth through display port. Keep in mind that DSC does wonders so it doesn't matter much regardless. 4090 at 4k 240hz using DSC is impossible to tell the difference despite using DP1.4a with DSC.

https://www.techpowerup.com/review/amd-radeon-rx-9070-series-technical-deep-dive/4.html

https://youtu.be/gKJJycCTeuU?si=GqYZUE5YMK2SHATP&t=360

Also credit where credit is due, Radeon handheld RDNA 4 launch very nicely despite the delays which arguably worked in their favor. They shot down nonsense rumours like $1000 msrp or 32GB versions. They kept peoples expectations in check and they did native comparisons without upscaling/FG unlike Nvidia. Well done really.