Probability of emulator on N900

PS3: No
X360: No
Wii: No
Xbox: No
PS2: No
Gamecube: No
PSP: No
Dreamcast: No, if so <15fps
N64: No, if so <25fps
PSX: Yes, expect 40 - 60fps depending on the quality of the emulator

Anything below PSX yes, expect near full speed.
DS: No, if so <30fps* and uncomfortable side-side position

*interesting to note DS has slightly worse graphics than PSX thus (logically) should have a speedier emulator but the dual displays really has its toll and makes emulation far slower.

I think to theoretically achieve:
- Dreamcast need ~2x more power = 1.2GHz A8 or 800MHz A9 or 500MHz dual-A9 with upgraded GPU & 512Mb RAM
- PSP need ~2.5x more power = 1.5GHz A8 or 1GHz A9 or 650MHz dual-A9 with upgraded GPU & 512Mb RAM
- Gamecube need ~3.5x more power = 2GHz A8 or 1.4GHz A9 or 950MHz dual-A9 with upgraded GPU & 1000Mb RAM