Actually on my build I have 2x8 3600 MHz CL 14 sticks of RAM, but I found a good offer of 4x8 sticks 4000 Mhz CL 18. I'm concerned about the IF, can someone tell me if the FCLK gonna reach 2000 MHz? If not, can I low the frequency of the sticks and let the latencies on "Auto" (Even losing a bit performance 32Gb is better than 16Gb)?
Motherboard: Asus Prime X570P
CPU: Ryzen 7 5700X (stock, not OC)
RAM (actual): 2x8 Team Delta 3600 MHz CL 14
RAM (from the offer): 4x8 Team T-Force Xtreem 4000MHz CL 18
In addition to @johnnyenglish response, you can configure your new Memory Kit (4 x 😎 using XMP or DOCP through the EUFI. In addition, I suggest you check out the "How to Configure and Overclock your RAM in the BIOS of your Motherboard" article.
Yes, going to 32GB of RAM will improve your overall performance regardless.
By the way, should you need to update the BIOS of your motherboard, check out ASUS's official support page first.