I have been waiting patiently to see the first performance figures of Renoir-based APUs on the desktop. By the way, I did figure the Integrated Graphics aspect wouldn't be hugely improved for desktop - where Picasso-based APUs (3400G, 3200G) already have reasonly high clock speed due to much less stringent power restriction. This basically confirms my suspicion that it won't be a huge jump (though it is in mobile).
For reference here is my Ryzen 5 3400G with the Vega 11 iGPU at 1700 MHz.
4301 (4700G GFX Score) vs 4270 (my OC 3400G @ 1700MHz GFX Score)
Still beats it, and that is stock, but I could probably try and get the Vega 11 in my 3400G to 1800 MHz. I wonder if the Vega 8 in the 4700G can overclock to 2500 MHz+, that, combined with the ability to support 3600MHz+ RAM, could lead to a nice performance bump.
Of course, the 4700G crushes my 3400G in physics, but that was obvious from the start. Still, it would be nice to have the increased CPU power in my Slim-mATX system (no dedicated GPU).