Thread: Standby type (S3)

usually enabling that in bios just means that it's now available as an option. you still gotta use "standby" within windows or whatever OS you run to actually put it in standby.

btw, standby is not "ultra low power draw*. It's still 2-4 amps on 12v (that range depends on your mobo and ram and usb stuff attached), which is enough to drain a battery overnight for some cars.

I thought it was 5v to keep the ram charged? So it's more like going into the store and I don't want it turned off thing.

I know that during normal usage, playing music with my stereo on even at low volume, my battery will drain in 1-2 hours. Kind of a bummer that I can't listen to music with the car off without worrying about the battery dying.

Sorry, when I wrote 12v, i was talking about your car battery. Yes, you're right it's the 5v rail that handles the RAM. You can think about hibernation as an alternative. Or, how about this:

carpc runs off of a second battery (primary battery for car ignition). Goes into standby when you turn off the car. If the battery dies, carpc loses power and shuts off. when you turn on the car and it's not in standby, it comes up with HORM.

I'm in the process of setting up my PC to boot off of CF that doesn't support hibernation, so I'm not bothering with that right now. I have EWF on my hard drive right now to work the bugs out.

I have a portable jumpstarter for if/when my battery dies. 2nd battery would be nicer though. Where would I locate the battery? My trunk already has a ton of stuff in it. Do you just hook the terminals up to + and ground for charging?

No, you need to isolate the second battery so power only flows one way (alternator can charge the second battery, but the second battery can't affect the primary battery). If you don't isolate it and just hook it together, your carpc will kill both batteries together.

HORM works with EWF (hibernate ONCE resume many... it doesn't write to the CF anymore after your first hibernate). Unless you're saying that hibernation just doesn't work at all?

2-4 amps? Where did you hear that?

I can't believe power consumption would be that high. I heard figures in the miliWatts range...

That's what I measured on my stuff. When I get my multimeter back from my friend, I can redo the measurement and prove it with a pic. That 2-4 amps is at the input side of my M1-ATX, so gotta toss in the efficiency of that, too. I didn't care to break down what component used what, only that the overall effect on the battery was a drain too large to sustain.

I chose to use a faster SanDisk Extreme 3 (rather than an Ultra2), which can't be mounted as a fixed hard disk, so therefore I won't be able to use HORM. My boot time isn't that bad, at least with a hard drive. But if I could use S3 STR it would be even better. I read somewhere that the draw is on the order of 150-200 mA.

Damn, wish I had checked what mine consumed now...