If you have a 70w ballast, then you need a compatible 70w lamp. See the label on the device.
Both Philips & GE make 70w CMH in various configurations. I have no idea as to their suitability for horticulture. Google "70w CMH".
Thanks for Your response.
Yes, i know that power of lamp must be the same as psu.
I am asking about certain type of power supply made by GIB. They mark it as semi electronic and suitable for both HPS and MH, but no CMH mentioned.
I suppose it wont work correctly.