I have tested my raspi with a bruteforce script witch is checking account balances.

The raspi was able to answere ~400 requests per secound (web.xml ddos entry 30000). I don't know if this is an indicator of the resources of a raspi to get 1000tps done. The java process was consuming 95% CPU and the connection was 100Mbit.
Powerconsumption was ~3,5Watt (model B)

For comparison my i5 windows pc was able to answere 15000 requests per secound with 1Gbit connection.

Greets,
eb

PS.: Do we have a script or something to test tps? Would be nice to have to decide what hardware we need for the nodes someday.