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First you’ll need a SCSI card that supports FAST20 – We have a list of ones tested. These are usually not narrow cards so either have to have a 50p port for backwards compatibility or an adapter. It’ll need high bit term. For Macs this really only came in optional cards in the G3/4 line (2/6)

Here we see @jokker115.bsky.social SGI O2 maxing out around 16.82MB/sec on a BlueSCSI v2 fitted with a Pico2, which is pretty great real world performance on a 20MB/sec FAST20 bus. If you have an early/mid 90’s workstation, BlueSCSI v2 with a Pico 2 (3/6)

Next we have Mac84 benchmarking his PowerMac getting 15.6MB/sec using a 2940W PCI SCSI card! BluesSCSI v2 with a Pico 1 (4/6)