I was using the STORM technologies DSP card I believe (has the same exact DSPs that are on the Thunder/24 with GX addon. I could have put a couple more DSP cards in but my IIfx was full of other cards. Never timed the difference between 2 and 4 DSPs.

Scrolling does seem faster with the GWorld ram on the Thunder/24 and photoshop 3. I was looking for ages to find Gworld RAM and ended up snagging some on a set of 3 AVID enhanced Targa 2000 Nubus cards (called the ABVB AVid card). The Targa has 4MB of VRAM and 4x4MB of 68pin Gworld SIMMs onboard. The Thunder/24 only seems to work with 2 of the SIMMs installed for 8MB max Gworld ram.