Overclock AC68U

[hggomes]

I will be able to try 1400 in about 1-2 hours when the other other go to bed (so they don´t get annoyed by an eventual crash)

I've been running 1200,800 and it´s completely stable! 1300,800 too!

Edit: Does anyone know what AC66U can overclock to? I'm at 900,450,225 atm. and I want to push it to its limit since I will just buy the new AC87U if it breaks.

Edit #2: What makes you say that it runs at the same speed if you use 1300,800 and 1400,800?

1. 900,450,225 on AC66U? That's not possible.

2. 1300,800 and 1400,800 is the same. cat /proc/cpuinfo and openssl speed aes-128-cbc

 

[philmiami]

So I have a "prototype"...
buying a RT-AC68U so I can still be a beta tester?


phil-lan-imac:~ philmiami$ ssh [email protected]
[email protected]'s password:
ASUSWRT-Merlin RT-AC68U_3.0.0.4 Sat Jun 7 16:32:17 UTC 2014
admin@RT-AC68U:/tmp/home/root# cd //
admin@RT-AC68U:/# cat /proc/cpuinfo
Processor : ARMv7 Processor rev 0 (v7l)
processor : 0
BogoMIPS : 2398.61

processor : 1
BogoMIPS : 2398.61

Features : swp half thumb fastmult edsp
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0

Hardware : Northstar Prototype
Revision : 0000
Serial : 0000000000000000
admin@RT-AC68U:/#

 

[hggomes]

Bootloader version? Same 1.0.1.6?

 

[philmiami]

No I am just saying because it says prototype......
being sarcastic......

 

[hggomes]

Roger that!

 

[philmiami]

admin@RT-AC68U:/# nvram get bl_version
1.0.1.6
admin@RT-AC68U:/#

 

[razvanu]

Hi, can this router be overclocked?

admin@RT-AC68U:/# nvram get bl_version
1.0.1.6
admin@RT-AC68U:/# nvram get clkfreq
800,666


Sent from my Nexus 5 using Tapatalk

 

[KKLD]

1. 900,450,225 on AC66U? That's not possible.

2. 1300,800 and 1400,800 is the same. cat /proc/cpuinfo and openssl speed aes-128-cbc

What do you mean 900,450,225 is not possible on the AC66U? It has run at that speed for days.


So you tested the speed difference between 1400,800 and 1300,800 and didn't notice any change? I don't use OpenSSL so I cannot use that to test.

 

[KKLD]

Hi, can this router be overclocked?

admin@RT-AC68U:/# nvram get bl_version
1.0.1.6
admin@RT-AC68U:/# nvram get clkfreq
800,666


Sent from my Nexus 5 using Tapatalk

Yea sure, just type in:
nvram set clkfreq=1200,800
nvram commit
reboot

 

[razvanu]

Ok, thanks, I'll wait until I return home, just in case something go wrong. I want to add some extra cooling, just to be sure nothing happens, in high load reaches at max. 82°C at room temp 28°C

I asked about OC because i saw this message in Administration menu:

"Your router bootloader version is incompatible with Turbo (overclock) mode"


Sent from my Nexus 5 using Tapatalk

 

[KKLD]

Ok, thanks, I'll wait until I return home, just in case something go wrong. I want to add some extra cooling, just to be sure nothing happens, in high load reaches at max. 82°C at room temp 28°C

I asked about OC because i saw this message in Administration menu:

"Your router bootloader version is incompatible with Turbo (overclock) mode"


Sent from my Nexus 5 using Tapatalk

It says the same thing for me, don't worry about it

My AC68U's CPUtemp is currently 85°C with roomtemp at about 23°C when running 1400,800.

It can go up to 88°C and also down to 80°C

 

[KKLD]

Had my first crash at 1400,800..... going to go back to 1300,800 and keep it there.

It was stable for almost an entire day.

 

[hggomes]

What do you mean 900,450,225 is not possible on the AC66U? It has run at that speed for days.


So you tested the speed difference between 1400,800 and 1300,800 and didn't notice any change? I don't use OpenSSL so I cannot use that to test.

Once again AC66U cannot go to those speeds, what must be happening is that after you do it router will revert to stock:

Do this via SSH/Telnet on your AC66U at stock speed and after with overclock and show us the output of both stock vs overclocked:

1. cat /proc/cpuinfo

2. openssl speed aes-128-cbc

OpenSSL is part of all FWs so you only need to run the command.

Yes you will not notice any change, but in my case it was not stable at 1400.

 

[RMerlin]

I asked about OC because i saw this message in Administration menu:

"Your router bootloader version is incompatible with Turbo (overclock) mode"

This message refers strictly to the Turbo button on the RT-AC68U.

 

[Dijkstra88]

Did use SSH through Putty and now I have set the router at 1100/800. Works perfectly. Thanks again

 

[hggomes]

Bootloader 1.0.1.6? EU or US?

 

[Dijkstra88]

Bootloader 1.0.1.6? EU or US?

Bootloader 1.0.1.6 EU model.

 

[hggomes]

I have already tested and i was right, you see those frequencies on "nvram get clkfreq" but at the end bogomips and openssl benchmarks still the same.

That means stock/default speed.

Once again AC66U cannot go to those speeds, what must be happening is that after you do it router will revert to stock:

Do this via SSH/Telnet on your AC66U at stock speed and after with overclock and show us the output of both stock vs overclocked:

1. cat /proc/cpuinfo

2. openssl speed aes-128-cbc

OpenSSL is part of all FWs so you only need to run the command.

Yes you will not notice any change, but in my case it was not stable at 1400.

 

[KKLD]

Once again AC66U cannot go to those speeds, what must be happening is that after you do it router will revert to stock:

Do this via SSH/Telnet on your AC66U at stock speed and after with overclock and show us the output of both stock vs overclocked:

1. cat /proc/cpuinfo

2. openssl speed aes-128-cbc

OpenSSL is part of all FWs so you only need to run the command.

Yes you will not notice any change, but in my case it was not stable at 1400.

Alright, here goes for my AC66U:

admin@RT-AC66U:/tmp/home/root# nvram set clkfreq=600,300,150
admin@RT-AC66U:/tmp/home/root# nvram get clkfreq
600,300,150
admin@RT-AC66U:/tmp/home/root# openssl speed aes-128-cbc
Doing aes-128 cbc for 3s on 16 size blocks: 1823182 aes-128 cbc's in 2.99s
Doing aes-128 cbc for 3s on 64 size blocks: 488268 aes-128 cbc's in 2.94s
Doing aes-128 cbc for 3s on 256 size blocks: 124242 aes-128 cbc's in 2.93s
Doing aes-128 cbc for 3s on 1024 size blocks: 31154 aes-128 cbc's in 2.88s
Doing aes-128 cbc for 3s on 8192 size blocks: 3909 aes-128 cbc's in 2.93s
OpenSSL 1.0.0m 5 Jun 2014
built on: Fri Jun  6 16:34:33 EDT 2014
options:bn(64,32) rc4(ptr,char) des(idx,cisc,2,long) aes(partial) idea(int) blow       fish(ptr)
compiler: mipsel-uclibc-gcc -fPIC -DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -       DDSO_DLFCN -DHAVE_DLFCN_H -ffunction-sections -fdata-sections -DL_ENDIAN -DTERMI       O -O3 -DLINUX26 -DCONFIG_BCMWL5 -DDEBUG_NOISY -DDEBUG_RCTEST -pipe -DBCMWPA2 -fu       nit-at-a-time -Wno-pointer-sign -mtune=mips32r2 -mips32r2 -DRTCONFIG_NVRAM_64K         -DLINUX_KERNEL_VERSION=132630 -DOPENSSL_SMALL_FOOTPRINT -fomit-frame-pointer -Wa       ll -DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DAES_ASM
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc       9756.16k    10628.96k    10855.27k    11076.98k    10929.19k

And here with overclock:

admin@RT-AC66U:/tmp/home/root# nvram set clkfreq=900,450,225
admin@RT-AC66U:/tmp/home/root# openssl speed aes-128-cbc
Doing aes-128 cbc for 3s on 16 size blocks: 1818549 aes-128 cbc's in 2.91s
Doing aes-128 cbc for 3s on 64 size blocks: 487099 aes-128 cbc's in 2.90s
Doing aes-128 cbc for 3s on 256 size blocks: 124796 aes-128 cbc's in 2.93s
Doing aes-128 cbc for 3s on 1024 size blocks: 31070 aes-128 cbc's in 2.85s
Doing aes-128 cbc for 3s on 8192 size blocks: 3926 aes-128 cbc's in 2.90s
OpenSSL 1.0.0m 5 Jun 2014
built on: Fri Jun  6 16:34:33 EDT 2014
options:bn(64,32) rc4(ptr,char) des(idx,cisc,2,long) aes(partial) idea(int) blowfish(ptr)
compiler: mipsel-uclibc-gcc -fPIC -DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -ffunction-sections -fdata-sections -DL_ENDIAN -DTERMIO -O3 -DLINUX26 -DCONFIG_BCMWL5 -DDEBUG_NOISY -DDEBUG_RCTEST -pipe -DBCMWPA2 -funit-at-a-time -Wno-pointer-sign -mtune=mips32r2 -mips32r2 -DRTCONFIG_NVRAM_64K  -DLINUX_KERNEL_VERSION=132630 -DOPENSSL_SMALL_FOOTPRINT -fomit-frame-pointer -Wall -DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DAES_ASM
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc       9998.89k    10749.77k    10903.68k    11163.40k    11090.27k

Sooo yea, seems you're right

Which frequencies can I overclock it to, then? :S

 

[hggomes]

Take a look:

http://www.smallnetbuilder.com/forums/showpost.php?p=124679&postcount=535