RT-AC68u overclock - slow webui and browsing speeds?

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josh3003

Regular Contributor
Hey there, I am running CFE 1.1.1.2 and 386.2 merlin on my rt-ac68u.
I recently upgraded to 225/25 internet and speeds seem to be a bit slow over the wifi. Just wondering if this is a limitation and aging router - even though I only purchased it 18mo ago for this internet speed.
I ran the ssh commands

Code:
nvram set asuscfeclkfreq=1200,666 && nvram set asuscfecommit=1
nvram set clkfreq=1200,666 && nvram commit && reboot

and still after rebooting the webui browsing appears/feels slower than before. Any ideas or tips? It still feels like a solid router but not sure if it is looking likely to upgrade to an ax router soon.
 

ColinTaylor

Part of the Furniture
Check that your speed hack has actually done what you think it has.
Code:
# 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
 

josh3003

Regular Contributor
Alright, can you share what you did? Looks like we have the same revision though mines at 199 BogoMIPS lol.

Code:
Processor       : ARMv7 Processor rev 0 (v7l)
processor       : 0
BogoMIPS        : 199.06

processor       : 1
BogoMIPS        : 199.47

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
 

Wallace_n_Gromit

Senior Member
What do you see when you enter SSH command:

Code:
cat /proc/cpuinfo | grep BogoMIPS

Dang, ColinTaylor beat me to it.

Some RT-AC68U's can't be Overclocked. If yours can you can try a "safe" way offered by Ironclad: (that's the way I do it) ;)


EDIT: Just searching for prior references to Overclocking/RTAC68U/CFE 1.1.1.2...

There have been prior attempts to overclock using that particular CFE version, which have failed. I think the prevailing thought on this forum (from prior posts) is that the CFE has been locked from being able to be overclocked on that particular version of the RTAC68U.

Attempts to revert to an earlier overclockable version of the CFE is risky (the broadcom chip version is different for the older CFE; and the older CFE won't run on the newer broadcom chip) and thus typically fails.
 
Last edited:

ColinTaylor

Part of the Furniture
All the recent firmwares have checks for overclocking or invalid speeds and lock down the speed to 100 MHz if it detects it. Obviously that's why it feels so slow.

I don't know if there's a way around that. To be honest I've not looked into it because I runs John's fork which doesn't have this restriction.
 

josh3003

Regular Contributor
Ok well how do I get it back to factory speeds to begin with?

EDIT: Ok, just reset it at the wall. Back to 1998.84 BogoMIPS now.
 

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