for your info the Holux GM270 is 8o mA at 3.3V in Continuous Mode
The Rikaline GPS-6021-X6 sports 70 mA at 3.3V in Continuous Mode
But for the King of lowpower GPS CF cards The Rikaline GPS-6020 sports a whoping
29mA at 3.3V in Continuous Mode
I'm not sure about the performance of the Rikaline CF cards but the Holux card is excelent