Only a guess
Looking at the specifications here
, and comparing it to Transmeta's specs for its processors here
, it looks like the chip inside the A907 is somewhere between 667MHz and 1GHz. I do not think it is the older TM5600 chip because this notebook looks new. It is probably the 1GHz model, because I came across this laptop (not made by ECS, but had similar specs, and has a similar model number - A900) here
So, if this A900 has a 733, it is possible that the A907 has something faster (my guess is 1GHz, but I suppose it could be an 866 or something). The best way to find out would be to call a dealer that stocks these things.
Hope that helped