Best Routerboard for IPSec on DSL

RouterOS General
1

Can anyone recommend the best current model Routerboard for use on xDSL when running an IPSec tunnel between 2 devices?
I have read some devices are better as the hardware can accelerate encryption performance rather than relying so heavily on CPU?
Bear in mind that I only use 2 x interfaces on both devices - one interface goes to xDSL modem, the other to a HP managed switch.

Currently running a RB750 on ADSL2+ Annex M and RB750GL on VDSL2 (80/20).

My RB750 CPU has put itself down to 250MHz and is maxed out solid at 100% with around 80% showing on profile as in use for encryption.
RB750GL by contrast when transmitting the traffic the above is receiving is still running OK at 400MHz with a CPU load around 60%, with around 50% encryption.
RAM usage on RB750 is high but using only about 50% of the 64MB on the GL.

2

I haven’t used them, but the new RB750Gr3 (hEX) would be a cheap drop-in replacement.

3

You can look here for a list of devices that support hardware-accelerated encryption for IPsec. But as turnip has said already, the RB750Gr3 sounds like a perfect hit for you.