Quote from: btct22 on August 09, 2013, 11:00:06 PM

I've got my 15A external power supply now and it's working with a 16Mhz crystal ok, I'm getting avg. 360MHash/s with this installed, running at 1.35V - is this a normal speed for a 16Mhz crystal? Little or no hardware errors with this config.

If I put a 20Mhz or 24Mhz crystal in, the light doesn't go off and the BE isn't recognised by the BFGminer software. Does that mean it's the wrong type of crystal or any suggestions as to how I could make the higher speeds work, even for a short time?

I got a 447Mhs with a 16mhz sometimes it would drop into the low 430's and this was at 1.21v so 360Mhs seems low. You wont be able to use a oscillator higher than 18.43 with the onboard core voltage supply, it goes into overcurrent protection mode. What happened for me was that the Block Erupter was recognized by the pc but once hashing started it would trigger the overcurrent then timeout. 18.43mhz would do the same after a few minutes so I have no idea what voltage it would be stable @ above 16Mhz.