Good news. My preliminary tests show that the RB1100 might be quite reliable when overclocked to 1GHz.

我一直在测试新的brands of RAM with RB1100 boards this week. I decided to test several of them with all available CPU and RAM speed settings.

The default speed as shipped is 800MHz CPU and 400MHz for RAM.
The bottom available speed is 333MHz CPU and 333MHz for RAM. The top available speed is 1066MHz for CPU speed and 533MHz for RAM.

With the RAM that I consider compatible, I didn't have a single failure at any of the speeds. I am now running a test unit at high speed for the next few days to see how it handles the extra clock speed.

I'd like to hear from others that are overclocking RB1100 or RB800 units which are very similar.

Tom

Hi,

My test RB800 @home with 2 R52n + noname CF and running ROS 5.0rc7

Normal settings baud-rate: 115200
boot-delay: 2s
enter-setup-on: any-key
boot-device: nand-if-fail-then-ethernet
cpu-frequency: 800MHz
memory-data-rate: 400DDR
boot-protocol: bootp
enable-jumper-reset: yes
force-backup-booter: no
silent-boot: no


Available options...
CPU Memory

Overclocked baud-rate: 115200
boot-delay: 2s
enter-setup-on: any-key
boot-device: nand-if-fail-then-ethernet
cpu-frequency: 1200MHz
memory-data-rate: 400DDR
boot-protocol: bootp
enable-jumper-reset: yes
force-backup-booter: no
silent-boot: no

Temperature fan-mode: manual
use-fan: main
active-fan: main
voltage: 51.1V
cpu-temperature: 59C

I have not tried to change memory rate...
system routerboard settings set memory-data-rate=533Mhz

I guess this would make it a 1333Mhz? But I don't know how the R52n cards will react.

What RouterBoot version are you running in this 800? I am not seeing the 1200 MHz option with RouterBoot 2.9 on a RB1100 running ROS 5.0rc7.

Tom

I am running 2.29

One year working fine rb800 to full heat outdoor cabinet ,processor overclock to 1333mhz. Amazing speed and great performance the network.

One year working fine rb800 to full heat outdoor cabinet ,processor overclock to 1333mhz. Amazing speed and great performance the network.

What is your temperature and settings + radio interface kapulan?

I've just installed an RB1100 set to 1066Mhz CPU/533Mhz Ram in our DC. today. Boot 2.29. ROS 4.16.

Rack in DC isn't particularly well cooled - cpu is at 51C - rises to 59C when taxed to 100% cpu for 5 minutes. Is running maybe 10C hotter then ambient in our office here.

I have no stability issues in a weeks "testing" - will see how it does in DC.

We have had a pair of RB1100 devices in one of our racks in a professionally run UK data centre (i.e. decent controlled ambient temperature, redundant CRACs etc.) running at 1333MHz with 533MHz RAM since May/June last year and they have been perfectly stable with a very respectable temperature:

routerboard: yes
model: "1100"
serial-number: "xxx"
current-firmware: "2.27"
upgrade-firmware: "2.27"

baud-rate: 115200
boot-delay: 2s
boot-device: nand-if-fail-then-ethernet
enter-setup-on: any-key
cpu-frequency: 1333MHz
memory-frequency: 533MHz
boot-protocol: bootp
enable-jumper-reset: yes
force-backup-booter: no
silent-boot: no

uptime: 5w2d14h25m24s
version: "4.11"
free-memory: 703784kB
total-memory: 1555964kB
cpu: "e500v2"
cpu-count: 1
cpu-frequency: 1333MHz
cpu-load: 3
free-hdd-space: 480952kB
total-hdd-space: 520192kB
write-sect-since-reboot: 3189238
write-sect-total: 12930005
bad-blocks: 0.1%
architecture-name: "powerpc"
board-name: "RB1100"
platform: "MikroTik"

fan-mode: auto
use-fan: main
active-fan: main
voltage: 13.5V
temperature: 20C
cpu-temperature: 25C

These have multiple internal and external BGP feeds and do all of our routing both between VLANs and out to the internet, so they see a good work out 24/7.

ive running mine @ 1333Mhz

Does anyone know if the stock RAM is capable of running at 533 MHz?
I might consider a RB1100 as suitable replacement for dying RB1000's if I can reliably clock them to 1333/533 MHz...

Does anyone know if the stock RAM is capable of running at 533 MHz?
I might consider a RB1100 as suitable replacement for dying RB1000's if I can reliably clock them to 1333/533 MHz...

yes it does im using it

Greetings

how did you manage to change CPU frequency? when i used change-frequency command it gave me:when i try to change the frequency higher or lower it say:then when i tried to change memory rate to 533 CPU jump to 1066MHz for about 20 sec then memory rate get back to 400 , result where as follow:after 20 seci am running firmware 2.30

any ideas?

BR

Sariao. I had the same problem - you just have to play around with it.

I suspect the best way to do it is via serial port/bootloader as like you the 1333mhz option doesnt appear in winbox/CLI for me.

Change your ram frequency to 533mhz first then reboot and you should see different cpu frequency options.

I changed ours from RouterBOOT via the serial console:

• Change the RAM to 533MHz
• Reboot and run the built in RAM test utility
• Change the processor to 1333MHz
• Reboot and run the built in RAM test utility

1333MHz was included by accident, this device is not meant to run at this speed. Only some versions of RouterBOARD 1100 will show this as an option.

Thanks guys that was useful.

Another Thing, does anyone tried to utilize the microSD for web caching ?
i used it for usermaneger and it worked just fine, but when i use it for web caching the router CPU jump to 100% and the router disconnect every time Webproxy tries to load or save anything to microSD cache!

anybody had the same issue?

microSD speed is not so good, if many writes/reads are done, CPU will climb.

OK, so what is the maximum "non-accidential" Speed a RB800 or RB1100 can be overclocked to?

hedele: 1066Mhz on my RB1100. Can't comment on RB800.

Thanks for the quick reply, disca.
1066 is still a nice chunk slower than the old RB 1000, but still better than nothing...

@MT Staff: Isn't it possible to re-enable 1333 MHz with a RouterBoot Upgrade?
We are really dependent on every CPU cycle we can get for pushing traffic through...

Right now, if an RB 1000 were to fail, I would have to replace it with something way slower, or go the experimental route
with some x86 Appliance for 5-times the amount of money and then have a lot of problems resulting from multi-core usage...

hedele: we have the same dilema re. replacement hardware should an RB1000U die. I wish the RB1100 had been a more powerful RB1000 CPU wise.

Hopefully they will address the gap in their product line up soon.

Mhz rate is not evrything where both RB1000 and RB1100 are using almost the same processors family "PowerPC e500". where RB1100 is using e500v2 which has more advanced key improvements on older e500v1, i am not sure about RB1000 core. i know it is MPC8547 but it could be v1 or v2
how ever these processors made to handle up to 1.5Ghz so overclocking it to 1333Mhz would not be a problem i guess!

sariao: Both show as e500v2 in mikrotik software.

好吧after second thought I am not sure if over-clocking is a good idea!
Yesterday i was implementing my 1st RB1100 which i changed the memory rate to 533 and CPU to 1066Mhz. the router stop responding for no reason about 4 times in 6 hours where i had to unplug the power cord to make it work again. every time i hard restart the router it start working normally without any configuration changes. how ever i reseted the memory rate again to 400 so the CPU drooped to 800Mhz and till now i had no hang up reported so far.

Any comments?

sariao: Was it definately during normal usage and not on reboot?

If you have changed the memory & frequency and the routerboard doesn't "like" it - then on reboot it will hang. You have to pull the power to get it back up.

Yes. the router has been rebooted during memory rate changing procedure and it did like the 533Mhz
that was 3 days before the implementation day.

sariao: what temperatures/voltages etc are you running at?

Max temp reached was 31c the voltage is between 2.5 and 2.6.
i am using this router as hotspot along with MAC authentication by usermanager, i am utilizing 10 ports out of 13
i have 8 DSL lines connected to it, each line can reach up to 20mbps, and i have about 80 users with rate limit of 4mbps / user

ROS: 4.16
RB: 2.30
Memory: 1GB

"voltage is between 2.5 and 2.6" - rated input is 12-24VDC.

Rest of it sounds normal. Id probably just try with the 512Mb that came with it overclocked to 533/1066 as its very likely to be the memory you added and not CPU/System instability IMHO.

for the voltage i missed the 1. it is 12.5~12.6
for the memory changing i did not have the chance to try that, i will if any problem again reported.

Overclocking a device designed to be a core router? Really?
It will be more unstable

I never said it would be used as a core device...
Our core devices push in excess of 10 Gbits, so there is no way in hell any amount of RB 1000s (or any MTik device at all) could cope with that.

然而,RB 1100是用于“太慢”a single Gbit Link (be it in the distribution or access layer), regarding the packets per second throughput.

Ideally, there would be a RB which is capable of pushing a full gigabit in 64-byte packets (2 Million PPS) to be safe in DDoS events as well.
To be honest though, I don't see that happening regarding Mikrotiks "but nobody needs this!!" attitude ...

To be honest though, I don't see that happening

I'll write that down somewhere. And I will lock this thread.