Ultra SCSI Fast20 OverClock - BlueSCSI/BlueSCSI-v2 GitHub Wiki

BlueSCSI can support the Ultra/Ultra Wide SCSI Fast20 SCSI timings.

With these settings

  • BlueSCSI v2/Ultra can negotiate up to 20MB/sec
  • BlueSCSI Ultra Wide to negotiate up to 40MB/sec

Prerequisites

You will need an SCSI card that supports Ultra SCSI (Fast20) and the appropriate BlueSCSI or adapter.

Enable

Add this to your bluescsi.ini file to enable FAST20 timings:

[SCSI]
SpeedGrade="TurboMax"
MaxSyncSpeed=20 ; MegaTransfers not MB/sec

Working

Ultra Wide/SCA

  • Please report!

v2/Ultra

  • Adaptec 2940W PCI (Mac, Pico1)
    • 16MB/sec Read, 10MB/sec Write
  • Adaptec 2940W PCI (Win98 SE, Pico2)
    • 14.4MB/sec Read, 8.9MB/sec Write
  • Adaptec 2940UW PCI (Win7 32, Pico1)
    • 9.5MB/sec Read, 5.35MB/sec Write
    • Note: you must use the 68-pin connector to get 20MB/sec negotiation
  • Adaptec 2940UW PCI (Win98 SE, Pico1)
    • 16.3MB/sec Read, 7.2MB/sec Write
    • Note: you must use the 68-pin connector to get 20MB/sec negotiation
  • Symbios 22801 PCI (WinXP, Pico2)
    • 12MB/sec Read, 4MB/sec Write
  • Symbios 22801 PCI (Solaris 8 Sparc, Pico2)
    • 14MB/sec Read, 5.7MB/s Write
  • SGI O2 via 50p CDROM connector (IRIX 6.5.30, Pico2)
    • 16MB/sec Read, 8MB/sec Write

Unstable

  • Adaptec 2940U2B PCI (WinXP, Pico2)

Not working