The Magnum Turbo 1230 Mk2 accelerator card works great. It's just a rebadged Apollo Turbo 1230 Mk2 card. I've not had any problems using it for games. I've got 16Mb on mine at the moment. WHDLOAD games load fine with this accelerator card.
This card allows 32Mb max with one socket or 64Mb max with the extra SIMM socket soldered to the other side of the card. Something I might try is to solder a low profile 72-pin SIMM socket onto the other side of the card. Then I can stick two 32Mb simms onto the card. Though I'm not too sure if another SIMM can fit onto the otherside of the card, inside the Amiga case.
There's 3 jumpers on the Magnum card labelled RAM, SCSI and WAIT.
I don't have the manual so I've no idea how to configure them. Other than to say that I've got the following configuration and it works fine: RAM jumpered, SCSI and WAIT are unjumpered.
What are your speed measurements with the Magnum card using the sysinfo utility? Here's mine:
Dhrystones: 7717
Mips: 8.05
Ran the test again today but this time it says:
Dhrystones: 7887
Mips: 8.23
