Here's from an actual user of 256MB

I've tested 2x128MB simms (HP Brand, model D4893 which is the only brand of 128MB simms that seems to be widely spread) on the following systems:
Blizzard 1230, Blizzard 1260, BPPC 603e, BPPC 603e+ and a friend told me it works on the MTK1230(or was it 40) accelerator.
They furthermore also work with the scsi-kit. Of course the simms are big, and won't fit flat down in the simm socket on the blizzards, but they work in an angle over the cpu just fine. If u got a big fan, problem too, and don't even think of using them in desktop
