looking for confirmation on the X570 WIFI,... if I use the lower PCIE x16 slot for my Kingpin 3090, will this still run at X16, or drops to X8??,... (my processor get's a little warmer with the backplate of the 3090 right next to it!

X8 is the answer
 
Only PE1 = x16 lanes from CPU (it is an AMD thing, even my X570 Dark Hero has this limit)
 
AMD diagram x570  (x16 lanes from CPU --> Only to PE1)
 
 
p22 of Manual
 
PE2 – x8 (Gen4, x8 lanes from CPU)
 

What king of CPU cooler are you using?
 
Add a case fan to move heat away from GPU backplate

Cool GTX
p22 of Manual
 
PE2 – x8 (Gen4, x8 lanes from CPU)
 
Only PE1 - x16 lanes from CPU (it is an AMD thing, even my X570 Dark Hero has this limit)


What king of CPU cooler are you using?
 
Add a case fan to move heat away from GPU backplate

thanks for fast response ,. I have an h150 Elite on the processor,. but my riser cable failed so I moved the card to slot 1 until new cable arrives, I noticed as now the backplate is some 6-7 inches closer to socket and is also rising into the corsair radiator, my temps have spiked some 7-10 degrees higher,. still in safe ranges, I'm just pissy about it!

Happy to Help
 
 
FYI - I've tested my 4090 @ 8X in my X570 and the hit to performance is minimal... so you can do it till the new riser arrives