Mini-Flash modules for Cisco 1700 & 82x routers?

[ADB100]

Does anyone know the specification of the Mini-Flash modules for the 1720/1750-series and 82x-series routers? I am trying to find out if an 8MB Mini-Flash module from a 1720/1750 would work in an 827. The spec for the 827 says it supports 4MB or 8MB Mini-Flash modules and gives part numbers for them (MEM800-4F= & MEM800-8F=). The 1720/1750 8Mb Mini-Flash module has the part number MEM1700-8MFC=, what I can't seem to find out is if the 2 8MB Mini-Flash modules are actually the same.
There appears to be 3V & 5V Mini-Flash modules, plus some that support both voltages. Does anyone know what the 82x and 1720/1750 support and are they interchangable?

Thanks

Andy