Marketing document says 100 tunnels:
http://www.cisco.com/warp/public/cc/pd/hb/vp3000/prodlit/vpn3k_ds.htm .
However, if you have more than one network lists per peer, the number of peers decreases depending on the network list number.
If you want more figures about throughput, please contact your Cisco Sales representative as they would have more information.
Regards,