This is the "Stefan Nitschke 16MHz mod" - see https://blog.troed.se/projects/atari-st ... deo-modes/
Do note that the tested resolution is "medium res in 16 colors" which of course impacts graphics performance.
CPU runs at 16MHz
MMU runs at 32MHz
Shifter runs at 64MHz
- all double the frequency compared to stock
Both RAM and TOS are thus running at double the stock speed.
Benchmark screenshots for various boosters etc
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