looking for fastest asus vpn router with merlin support

[amigohd]

hi all

i want to replace my RT-N66U with a newer and faster asus router. i am looking especially for openvpn performance. entware (not on ARM routers, right?) or optware support would be nice.
wireless n support would be enough, no need for ac.
overclocking possibility is a must.

which one should i choose?
thx in advance.

 

[RMerlin]

The fastest router is the RT-AC87U, with a 1 GHz BCM4709. Like all ARM based routers, it only supports Optware.

 

[amigohd]

thank you, merlin.
what cycles can we use with this arm cpu?
the only information I found was for mips, i.e. for the N66U.

/* 25MHz table for 4706 */
static uint32 BCMINITDATA(pll25mhz_table)[][3 + PLL_ENTRIES_4706] = {
/* cpu, ddr, axi, proc_PLL, */
{ 200, 100, 50, 0xc0011080, },
{ 300, 150, 75, 0xc00110c0, },
{ 400, 200, 100, 0xc0011100, },
{ 500, 250, 125, 0xc0011140, },
{ 600, 300, 150, 0xc0011180, },
{ 632, 316, 158, 0xc00157e8, },
{ 650, 325, 162, 0xc00111a0, },
{ 662, 331, 165, 0xc00111a8, },
{0}

such a table exist for the arm BCM4709?

 

[RMerlin]

thank you, merlin.
what cycles can we use with this arm cpu?
the only information I found was for mips, i.e. for the N66U.

/* 25MHz table for 4706 */
static uint32 BCMINITDATA(pll25mhz_table)[][3 + PLL_ENTRIES_4706] = {
/* cpu, ddr, axi, proc_PLL, */
{ 200, 100, 50, 0xc0011080, },
{ 300, 150, 75, 0xc00110c0, },
{ 400, 200, 100, 0xc0011100, },
{ 500, 250, 125, 0xc0011140, },
{ 600, 300, 150, 0xc0011180, },
{ 632, 316, 158, 0xc00157e8, },
{ 650, 325, 162, 0xc00111a0, },
{ 662, 331, 165, 0xc00111a8, },
{0}

such a table exist for the arm BCM4709?

Either 100 or 200 Mhz steps (I forgot). So, 800,1000,1200,1400 for the CPU clock.

For RAM, it's usual DDR clock rates: 533,667,800.