How is that different from sleep?

Counting, or maybe not counting Hybrid Sleep, what is the difference
between Sleep and what happens when the screen and the harddrive time
out?

The screen gets dark and the harddrive spins down. How is that
different from sleep?

Wolf K wrote:

micky wrote:

Counting, or maybe not counting Hybrid Sleep, what is the difference
between Sleep and what happens when the screen and the harddrive time
out?

The screen gets dark and the harddrive spins down. How is that
different from sleep?

https://www.howtogeek.com/102897/wha...te-in-windows/
Found searching for "sleep or hibernate on windows".

Sleep, as per the OP's inquiry, is a low-power mode. Hibernate is a
power-off mode. The OP mentioned hybrid sleep which saves the memory to
a file (just like hibernate mode) but leaves the computer in low-power
mode. Then, if power is lost during sleep mode, the hibernate file can
get back to the same state on power up.

micky wrote:

Counting, or maybe not counting Hybrid Sleep, what is the difference
between Sleep and what happens when the screen and the harddrive time
out?

The screen gets dark and the harddrive spins down. How is that
different from sleep?

The hard disk spinning down (assuming you're not stuck with a "green"
drive that does that in its firmware) and the monitor powering off
(assuming your monitor doesn't already have that feature) when they've
been idle for awhile affects ONLY THOSE DEVICES. The CPU, video, and
all other hardware is going to be full-on. If you don't feel you need
to save some watts on the CPU then just getting the HDD to spin down and
the monitor to blank out are probably bigger energy savers. Depends on
how hot is your CPU regarding wattage (during idle).

I have my high performance power options profile configured to spin down
the HDDs. My primary drive (with OS and apps) is an SSD so that doesn't
need to get powered down. The HDDs are for saving downloads, media
files, ISO images, and documents on one HDD and for saving local backup
copies on the other HDD. The slight delay to get them spun up when
something is accessed on them is minimal, plus those files infrequently
accessed.

I used to configure the power plan to also blank out my monitor.
However, if there was a hang and I couldn't get out of the monitor sleep
mode then I couldn't see what state the computer was in at the time.
There might've been some message on the screen but I can't see it, have
to reboot, and then have to dig into Event Viewer hoping something in
these has some notes about the hang (but that doesn't happen often since
the OS didn't really crash but hung which means usually no events get
recorded). Instead I let the monitor blank itself. I can unblank the
monitor even if the OS hung while the monitor was blanked out.

You could get a Kill-a-watt meter (for about $20) to see what is the
difference in power consumption between sleep mode (CPU, monitor, disks,
etc) versus full-on power mode but with HDDs spun down and the monitor
blanked out. The meter is useful for other purposes so you're not
wasting it just to check power consumption between the two operating
modes on your computer, like checking how much your fridge or dryer
consume from the wall outlet. If you've got window A/C units, you might
want to check how much they draw if, for example, it's in a kitchen
window and on the same circuit as a microwave oven.

micky wrote:
Counting, or maybe not counting Hybrid Sleep, what is the difference
between Sleep and what happens when the screen and the harddrive time
out?

The screen gets dark and the harddrive spins down. How is that
different from sleep?

That could be S1 Standby, where the CPU is still running.
If the screen goes dark (and it's not a screensaver), but the
fan is still running, that means your CPU is warm and you're
not in a low power state to speak of.

The harddrive can spin down, even in S0, so that's not a hint.

The screen goes dark in S1 and S3 (or the others), so that's
not much of a hint. There is no S2.

In S1 the CPU may remain running (even if it's using HALT in
time slices, and the clock tick interrupt keeps the scheduler running).
Some older processors draw significant power in that state (13W).

In S3, the CPU should lose power (VCore off), the RAM is
running in Refresh mode via either Northbridge or UnCore.
In Refresh mode, RAM contents are preserved at a cost
of around 1W per stick. My eight-stick machine draws
7.5W when sleeping (a bit of a pig). Since the CPU has
no power, and neither does the GPU, there's no reason
for the fan to run in this state.

In S3 with Hybrid Sleep, the RAM contents are written to
the hiberfile for safety. If the battery doesn't run out,
recovery from Sleep is fast. If the battery dies, the
hiberfile has your session safe, even if it takes a minute
or two to load again.

In S4 hibernate, the RAM should lose power. There is no
option for quick recovery from this state.

Paul