The problem is when power is allocated in weird ways. The LF2 with its excessive 5V draw being an obvious example. I don't know if anyone has measured the draw of the individual rails on an Ion board to see if it also draws a lot of 5V, or if it is more of the standard 12V.
Atom 330 boot times....
Cold boot up = why worry??
Resume from S3 (not hibernation) = 2-3 seconds
Current draw in S3 sleep with a USB slot load DVD drive (powered by a power harness from the M2), a space navigator, a 7 port USB hub (with external power), USB BT dongle etc etc = less than 50mA. At that rate you could let the car sit for weeks without worrying (disclaimer: I have a BMW 740, which has a fairly substantial battery). And the M2 will shut down the CarPC completely if the battery voltage falls too low.
I end up "rebooting/cold booting" my CarPC, maybe once a month or so.
"case": Skoda Superb Elegance 1.8T
Asrock G41MH-GE, E2180 2GHz dualcore, 1024MB DDR2/800, Samsung F1 750GB/7200RPM/32MB, M4-ATX, Lilliput FA1011 HDMI touchscreen, ASUS Xonar DG PCI, homemade Quectel L10 USB GPS
My DG45FC is so slow booting.
25.8 sec until the beep. (including about 5sec it takes from M4 to start the thing), so to be fair is like 20 secs.
15.2 Win7 resume from hibernation.
5 sec. M4
32s. Win7 32
total: 57.7s. from IGN on. Not good, thanks to this Intel Bios.
Fully loaded with all USB ports, GPS, bluetooth, Camera, JoyCon, etc.
So yeah, I'd love to try a good and fast Atom board for my other car.
This is the board i'm currently using. Bios is quite quick compared to the intel bios.
resume from hibernation quite fast, but wasn't fast enough for me. Currently using it with s3 hybrid sleep.