As default the FAS2020 comes with 1024MB of system memory and 128MB of NVRAM per controller
I believe NVRAM on 2020 uses part of system memory, so basically eats up into this 1GB.
I've never seen any official spec, but Wikipedia says 2020 has 2.2 GHz Mobile Celeron (http://en.wikipedia.org/wiki/NetApp_filer)
Regards,
Radek