Quote: Originally Posted by
eigenVector 
Not sure what you mean. My PC switches off with my car stereo, and when it cuts off it still draws current, but very little. I haven't measured it, but obviously enough to keep my computer in sleep mode. After the 30 minutes when it enters hibernation, it still draws current as well, but far less than when sleeping. It's at least enough to power the LEDs on my keyboard. The PC is completely off, but whatever residual power that goes to the keyboard lights is still there. When the PS shuts itself off completely I'm pretty sure it kills all remaining current, although I'm not 100% certain of that. I've run my system for about 3 months now. The longest I've left the car off is about 36 hours.
I'll clear some things up/set some things straight:
1. When in s3 suspend mode-the power supply is providing power to the 5v-standby rail only. This power is consumed by the system clock, network cards with WOL enabled, non-usb keyboards and the ram. Current draw is somewhere between 30mA-1A depending on your ram but in most cases ~30mA for a single stick ~50mA for 2 sticks plus accessories.
2. When in the s4 (hibernate) or s5(soft-off) power state, the system powers the same devices as s3 except for the ram. Typical current draw in this state is ~5mA.
3. When resuming from standby/hibernate or going to standby/hibernate the system will typically use close to its max current draw (the most current it will draw when operating) due to the high cpu use, disk spinup and usb device initialization. These numbers are very system specific but are usually in the 3A-20A range depending on if its a ulv processor or a full desktop CPU.
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