Now that Vectoring and G.INP are here, I thought I'd do a comparison of Broadcom (NF4V) vs Lantiq (DV130 based modem chipsets
I got hold of a $1.50 bargain NF4V to do this test, who ever proved supreme would remain, looser would become spare.
Both setup with latest Vectoring enabled Firmwares, Modem 8 incase of the DV130

As the DV130 is my current Modem in Bridge mode to a ERL3 I used this as is
The NF4V I took to roadside box where the DV130 replaced that for test
I set the NF4V as a router with DHCP turned off gave it and laptop a dedicated IP in same subnet

Here we have the NF4V stats and performance on Speednet test

vs DV130

The NF4V had a higher upstream sync vs a similar higher downstream sync for the DV130
NF4V also has a very small interleave depth, where as DV130 was on 1 (Fast)

Now the NF4V was very unstable in doing the Speednet test, I ran this numerous times and got same result every time
It would go as high as 50Mbps but on the way jump up and down
This modem had the shortest route to internet, as it didn't need to go out via 2x Litebeams, ERL3, switch, r7800 AP that the DV130 test had to
Not sure what is going on there.

If you have either modem there is probably no need to change, as the differences are minimal and you'd not notice the difference

But in the end the NF4V will go into the garage to help fill up another box of spare parts (all precious)