How to set your smartcard clock speed & Overclock it

Some already should know, but here is a way to adjust the clock speed of your smart card using cccam.
In your cccam.cfg find one of the three lines below:

SMARTCARD CLOCK FREQUENCY: / dev/sci0 3400000(Main card slot in box)
   SMARTCARD CLOCK FREQUENCY: /dev/sci1 3400000 (second card slot in box)
   SMARTCARD CLOCK FREQUENCY: /dev/usb/tts/0 3400000 (for smargo reader)

What ever line you have will depend on which way you are installing the card to the box. If you line had a # at the start of it remove it (if your config does not have any of these line you can add your own)

To overclock it is only a matter of changing the frequency (numbers) at the end of the line.

Example:

SMARTCARD CLOCK FREQUENCY: / dev/sci0 5600000

This means that the card is working to 5.6 mhz instead of 3.4mhz, using this setting on conax card, It changed the ECM time from 0.33 to 0.27 s

Idealy you want the card running at the correct frequency it was designed to run at. (CCcam has a default speed and runs all cards at the same so you should check what your card is designed to run at and set your frequency accordinly).
If you are getting freeze from your card at the correct speed you can then over clock it. Overclock aims to ensure that the response time of the card is faster, we can see in ECM time, the lower the response time better. There are cards that overclock better than others. If when overclock the card fails to appear in Entitlements, then you will have to reduce the frequency:

Before starting see the ECM time of the card, if the overclock does not make improvements there is no reason to overclock it and it is better leave it as it was, increase the frequency gradually to find that work more quickly and is stable with your card, advise starting with a low frequency, for example 1/2mhz 500000. (after each overclock reboot your box)

Here is a few examples of ecm times achieved with a little overclocking

SMARTCARD CLOCK FREQUENCY: /dev/sci0 8200000 (irdeto 0.195 to 0.1370)
    SMARTCARD CLOCK FREQUENCY: /dev/sci1 5250000 ( nds ECM 0.210 DOWN TO 0.191
    SMARTCARD CLOCK FREQUENCY: /dev/sci0 6800000 ( Sky uk 0.147 DOWN TO 0.122)
    SMARTCARD CLOCK FREQUENCY: /dev/sci1 5600000 (Digialb conax 0.275 down to 0.178)
    SMARTCARD CLOCK FREQUENCY: /dev/sci1 8300000 ( BULSAT IREDETO 2 PURPLE 0.215 DOWN TO 0.151)
    SMARTCARD CLOCK FREQUENCY: /dev/sci1 8420000 ( SHOWTIME IREDETO 2 0.225 DOWN TO 0.141)

Here is a few frequencies that certain cards should be running at, I do not know which frequency every card should be running at but google should find this for you. If anyone knows anymore post them below and I will add them to the list

Nds3 34300000
    viaccess4 6800000