Performance

Here's a table of SpeedoMeter 4.02 QuickDraw results (relative to Quadra 605) on my A1200 equipped with Apollo 1240/40MHz. The screen mode during the test was PAL: Hires Lace 640x480 and the refresh rate was 1.

Driver 2 colours 4 colours 16 colours 256 colours
TurboEVD 1.295 1.166 1.003 0.715
Savage - - - 0.624
AmigaAGA-EVD 0.876 1.009 0.845 0.568
Shapeshifter internal 0.877 0.687 0.451 0.205

Note 1. AGABoost didn't have refresh rate 1 as option.
Note 2. No test results for Savage in 4 bit mode because it's registered version only.

Here's another table which shows the speed difference between PAL: Hires Lace (shown above) and Multiscan: Productivity.

Driver 256 colours
TurboEVD 0.397
Savage 0.310
AmigaAGA-EVD 0.284
Shapeshifter internal 0.074