In my previous thread comparing 9850X3D vs 5700X3D using RTX 4090, some people mentioned nvidia cards having high CPU overhead.
So I tested the same scenarios with RX 9070 on 9850X3D and found that it was significantly faster in Oblivion Remastered by around 10%, but similar in other games.
Retested using the default DDR5 speed of 5600 because it should increase the CPU bottleneck. It did, with the Oblivion gap increasing to 15% and Outer Worlds 2 also started showing around 8% difference.
But 4090 was averaging very slightly higher in the other two games, when it was very slightly behind before. Dunno how much to read into it, and I will test the 9070 soon on the 5700X3D system, where I expect to see bigger differences.
All RT/PT settings were enabled at 1080p w/ DLSS FSR Ultra Performance with the latest drivers. Had to drop to 720p for Cyberpunk and Star Wars Jedi Survivor since the card was pulling max board power at 1080p. Also had some hitching issues with the latter and had to do multiple runs.
Hardware Details :
9850X3D w/ 8000C38-48-48 2x24GB on Aorus X870E ( FCLK 2000 ) with RTX 4090/RX 9070
By default SMT is enabled