@ajk
This is because the CSPPC uses a 64bit interleved memory controller, which is amazingly fast compared to non-interleaved memory controller - the ZorRAM and DKB3128 are non interleaved memory controllers.
It would be nice to see a Zorro based product that uses a similar 64bit interlerved controller over two sticks of PC133, however the ZorroIII bus isn't fast enough =(
@Amigakit
Arguably, the 72pin SIMM's that we use on the miggy are SDRAM technology, (since its sycronized to the bus) some have extra features like EDO (Extended Data Out) or FPM (Fast Page Mode) or other extended writing / reading features. I would expect that the ZorRAM uses some of the fetures of the onboard (faster clocked) SDRAM, the DKB3128 does not have this capability.
However what really is the Selling point of the ZorRAM (for me) is the lower power consumption, warrenty, support and the fact it NEW hardware.
All hardware only has a finite life with them, the fact we are using machines that were not to be seen to last 5 years - 25 years later, is a testment to as much our passion for them as thier initial design
@Alexh
Irrespective of the niceities of new hardware, along with a top-notch support and warrenty packege, I would say what the ZorRAM brings to the table first is arguably a much lesser power drain...
If we argue that each memory chip on a SIMM uses 15ma, which is a very conservative value as I have memory modules here that can use over twice that!
Taking this further, a standard 16 chip 32mb simm would draw 240ma - thus for four sticks it would requite 960ma to run, not including logic and latching on the adapter itself... thus I could say the DKB3128 at its lowest power consumption would use a good amp =) (yeah....i know its only 5 wats... but they could be very special ones
but I suspect that its probalby twice that with older SIMM's)
The ZorRAM, I would estimate to use less than half of this amount, infact I would say it would struggle to see a third of that kinda of power consumption. Also the ZorRAMs physical dimensions are much smaller, this aids in improving airflow by not holding back heat on cramped systems (like the A3000D or a heavily populated A4000D)
All in all, the ZorRAM is a better product, backed up with some top-notch support, you just dont get that with nearly 19 year old equipment like the DKB3128 - unless you know the person you bought it from really well and they liked you.... a lot... lol....
besides getting a DKB3128 is only half the cost... it would seem there is an international crisis on 32MB simms lately!