What is "NVRAM60k" ? How to know with Asus RT-N16

Discussion in 'Tomato Firmware' started by Mowax, Nov 30, 2012.

  1. Mowax

    Mowax Networkin' Nut Member

    Hi guys,

    Just looking for a new router with exta ram and come across the Asus RT-N16, I have a netgear 3500L version one and it's just not cutting the mustard with the VPN that I have in place. So want another router that can maybe cope with it.

    Thing is looking at the "Toastman" builds, not sure on which one as there's 2, one with nvram60k and one with out?

    Could you explain what the "nvram60k" is about please?

    thanks a lot.


    I have on my existing router


    But I've also tried the following:

    latest one_tomato-K26USB-NVRAM60K-1.28.7500.2MIPSR2Toastman-VLAN-RT-VPN.rar

    and that one seems to work as well,

    Just wondering the best one for the new router that I will be getting.

  2. lefty

    lefty Networkin' Nut Member

    nvram60k means its for routers with 60k of nvram, most standard units only have 32k of nvram, alot of the newer N units have either 60 or 64k of nvram. makes for more room to store settings etc. The RT-N16 has only 32k of nvram.
    Mowax likes this.
  3. Mowax

    Mowax Networkin' Nut Member

    Thanks very much for that, appreciated. Hmm, I take it the more ram and flash that it hs, i.e the new Asus TR then will be better all round a that has more processing power than the one I have at the minute, I know there's a lot of encryption etc. but I do see the CPU maxing out towards 80% - 90% at times....just been looking and love the tomato firmware (Toastman) so would like to have that on the new one.

    I've had dd-wrt for ages, but that got pushed out the window when I upgraded my switches to 10/100/1000 and then got the netgear WNR3500L all though I've seen the version 2 has more, They seem very hard to come by.

  4. lefty

    lefty Networkin' Nut Member

    Well nvram has nothing to do with board ram or flash rom. Its programmed into the CFE bootloader (like a BIOS for the router). Its basically where all the router firmware settings are stored and how they get initiated on boot. The expanded 60k and 64k nvram units leave more room for static settings, and on some units, its very needed, take for instance the WRT610N v2, great router hardware wise, but horrible nvram wise because it only has 32k nvram, so if you flash say dd-wrt (not sure how it does on tomato), out of that 32k you'll have around 4k free, not much room for port forwards, static DHCP, VPN certs, SSH certs etc etc, not much of a problem if you run a very simple setup, but for most people, its not enough anymore. Good thing on that unit that you can convert it to an E3000, which expands its nvram to 60k, and then makes it a glorious unit. With the RT-N16 its not as bad because its a single radio unit, i ran one for a long time as my main gateway/AP, did a great job, but because i expanded my network to my neighbors around me and have alot more static settings, i needed units that have more nvram, so now i don't purchase anything that has lower than 60k nvram. Most newer units coming out now have either 64k or 60k nvram, so they are not to hard to find.

    And in a nutshell, dual radio units need as much nvram as possible, because of 2 radios, it uses alot more NVRAM variables right off the top for that second radio. Even if you have it disabled, it still uses up the variables, thus eating precious nvram space. Once you get to around 200bytes the router becomes highly unstable and can even loose your total config setup. So the more, the better.
    Mowax likes this.
  5. Mowax

    Mowax Networkin' Nut Member

    Thanks very much for that detailed reply mate, I'd be taking a step back then as I have a SSL, configured and the like, and VPN's, that was my whole point of wanting an upgrade....why did they make a router that has more flash and ram and less NVRAM, some times it just doesn't make sense, It's like everything though isn't it they come out with something and then what seems to the likes of me and you and the rest of us is a "clanger" I mean why make such devices with faster processors and ram etc. and then make the whole "bios" space the smallest they can? They all ways do it, like for example, Video card has DD5 and yet you can't buy it yet for a mother board, they saturate the market and then when sales are starting to slump they "revamp" there brand with an all new and singing brand/device.

    Thanks very much for letting me know that again mate, it's going to have to be the ASUS RT-N66U me thinks.....

    Actually just read your post over again and that so it would sink in, quite interesting about the WRT610N, all though they never seem to be advertised with what version they are, like the "netgear" I didn't know at the time that you could get version 1 and 2's, should have looked into it really....

    If you can make the WRT610N into an E3000 and increase the nvram then that sounds like a good idea as well as also looking at the specs it would seem a good router? but I guess I need to find the version two one, like the netgear it might be fruitless....

    Guess it's going to have to be the RTN66U ;)

    Thanks again.
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