[mythtvnz] CPU required for Freeview HD

[Tortise]

I picked up a Strong SRT 5410 Freeview HD STB sheet yesterday, its CPU is noted to be 
STi7101 32 bit Super Scalar RISC CPU - 400 Dhrystone 2.1 MIPS at 266Mhz
64M Flash ROM, 1024 M DDR DRAM.
I note it is detailed at http://www.ascent.co.nz/productspecification.aspx?ItemID=367081
Surely food for thought, this sounds to me like typical router CPU performance levels, presumably there are decoding chips also included which do the grunt, presumably somewhat like the PVR-350 does.
I wonder if such a device(s) on a PCI card could do the job for Myth? 
Is this a line worth considering?
The Tortise
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