If a 3x Iyo speed-up was available in the form of a replacement m/board for reasonable money (say £3-400) I /would/ be interested, and I suspect I would not be alone. Just for interest, this is what druck had to say when the IOP342 was announced back in '06:
"If the IOP342 contains all the peripheral features of the current chip, which it seems to, then only there would only need to be a redisgn for the differing package layout, plus of course any other changes such as an updated southbridge which would be needed. The seperate flash to hold the ROM could be deleted as it has 32MB on board.
The 1.2GHz clock speed increment combined with the Level 2 (undoubtedly only 512K) would give a substantial speed boost over the IOP321. The 1MB of internal memory could be used to hold critical parts of the OS for further performance gains. This just may hit the 3x tipping point for Castle to consider an Iyonix Mk2."