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Overclocking WRT54GS v4: 200 MHz --> 216 MHz

Discussion in 'Cisco/Linksys Wireless Routers' started by Tomchu, Dec 2, 2005.

  1. Tomchu

    Tomchu Network Guru Member

    I understand that some versions of the WRT54G/GS ran at 216 MHz in order to fix a timing bug when doing large file transfers. My WRT54GS v4 runs at 200, and I'm itching to try running it at 216 MHz. :-/

    Does anyone have any information regarding this? Was it perhaps only v3 routers that allowed you to do this? Is anyone else running their v4 G/GSs at 216?
  2. Toxic

    Toxic Administrator Staff Member

    you need to use a 3rd party firmware that has telnet. then from the telnet promot do:

    nvram set clkfreq=216 [enter]
    nvram commit [enter]

    to find out what speed the cpu is running do this:

    nvram show | grep clkfreq

    216 was only recommended by linksys. using higher values can brick your router and most debricking methods will not work.

    this does NOT work on v1.x WRT54G routers as they have a 125Mhx CPU
  3. Tomchu

    Tomchu Network Guru Member

    Yeah, I'm already running the latest DD-WRT v23 on both of my routers ...

    I guess if 216 somehow doesn't work, I can always build that JTAG cable. :)
  4. gaster

    gaster Network Guru Member

    216 was for the 2.2, 3, and 3.1 only

    I have not heard of anyone overclocking the v4 and I am not sure it will work. That is a new CPU with other functions intregrated into it so you would be overclocking many things on a v4 that don't get overclocked on the earlier units. be very careful...
  5. Tomchu

    Tomchu Network Guru Member

    Well, I just did it to both, and it seems to work ... :-D

    WRT54G v4 and WRT54GS v4 confirmed to work at 216

    I guess I'll see over time if it's stable.
  6. dududa

    dududa Network Guru Member

    I just tried the command ["nvram show | grep clkfreq"] by myself on my WRT54G/V2.2 (running on tofu11).
    And guess what it tells me:
    clkfreq=216 :eek:

    So it runs un 216 Mhz. But shouldn't it run on 200?
    I didn't change anything by myself. Is it tofu which sets this clockfreq?
    Is it dangerous for my router if it runs on this higher clockfreq?
  7. Tomchu

    Tomchu Network Guru Member

    No, some versions of the router ran at 216 at default.
  8. devil-strike

    devil-strike Network Guru Member

    No default with older original firmware Below 4.20.6 runs @ 200MHz
    DD-WRT runs @ 216.
  9. brucebeh

    brucebeh Network Guru Member

    yeah, mine runs on 216mhz as well and i didnt change anything.

    using dd-wrt as well, is it safe to run the cpu at 216mhz?
  10. swinn

    swinn Network Guru Member

    The newer Linksys firmware overclocks certain WRT versions to fix a bug that was causing errors in large file transfers. It was done by Linksys. I think it only affected three versions of the router.


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