Fritz 7270 creates 2.3 Mbps
diverse Speedports create 1.2 to 1.7 Mbps.
DrayTek Vigor has 1.8 managed only with firewall. With a firewall it were not 1Mbps.
Tenda has not worked
TPLINK makes no modems for Germany (Telekom forced called "Annex B").
Fritz 7390 managed 1.2.
DLink I will not test because my DLink router 3 were broken after every 2 years. Finally with this company.
and now for Allnet. He has no time geschaft eight, ie 800 kbps. So it is by far one of the worst modems on the market (for my line). Too Bad.