Mod Audigy NX (what frequency is this C3.6864L3F?)

[agent.5]

I am planning on modding an Audigy NX. The DAC of this little guy is Stac9460S and I can replace it with three PCM1794. The oscillator connected to the DSP chip has marking C3.6864L3F on top.

Is there a way to tell/find out/measure what frequency this oscillator is?

 

[macboy]

It's most likely 3.6864 MHz.