The disk speed, especially with an SSD as Rharv said, made a huge improvement for me. But in my opinion the main determinant of BIAB speed is your single-core CPU speed.

RAM is not really a concern. JBridge allows a VSTi running in the 32-bit BIAB to run in more than 4 GB. BIAB itself doesn't appear to need more than the 3GB max available to programs in a 32-bit environment.


BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors