>> your quoted ≈0.3 GB/s for PA6T is measured with an m68k program,
>> so that's the memory performance of the m68k emulation running
>> on PA6T, not that of the PA6T itself.)

> compile same test to OS4

The bustest archive does not come with source. You may try to run the stream benchmark on your Vampire, which is available natively for m68k, MorphOS and OS4. Stream results for PPC boards running MorphOS or OS4 are widely available.

> and you will get similar results, since its mem test not CPU test

No, memory read/write performance very much scales with CPU speed/clock if done by the CPU (which is the case with both bustest, RAGEMEM and stream).

>> You quoted ≈0.5...≈0.7 GB/s for Vampire V2 in comment #13, so less
>> than a fifth of PA6T performance. Is Vampire V4 really that faster?

> Memory controller depends on paired memory and V4 has increased
> results due to DDR3 RAM, as well as Igors V1200.

I still doubt that Vampire V4 memory performance sextuples that of Vampire V2.