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No fans spinning in standby

M

monster64

Banned
I thought I had a problem with my computer. During standby mode, none of the fans in my whole computer spin. At first I thought this was a problem. I decided to do a test. I ran prime 95 small ffts for max heat with the fan running and my full load temp was 48C. Also my northbridge was running at 33C full load. Then I ran prime 95 small ffts and put the computer into standby. Prime was running for about 1 hour and I had my temp monitor running so a soon as the screen turned on and the computer went out of standby, and the fans started blowing again, about 3-4 secs passed. I read the temp. It was 48C on the cpu and 34C on the northbridge. I'd give it maybe an additional degree of C, so lets say 49C on the cpu, 35 C on the northbridge (Asus A8N-SLI.) 4 80mm case fans, two intake, two outtake. I have an XP-90 heatsink and a 3500+ venice OCed to 2.7 ghz. Two Do I even need a cpu fan? Does anyone?
 
Oh lol you sure, feel like a complete idiot 😱
EDIT: No I clearly remember it did something because it finished the first 5 tests and was on the second batch of tests. When I stopped the test, it said running for 55 mins 0 errors, 0 warnings. Its impossible if it tested the cpu without it being active, right? Whats going on then?
 
There are two main standby modes, S1 and S3.
In S1 mode, your CPU is running idle, low-power, and the rest of the system (including fans) is powered on.
In S3 mode, CPU is off, system is mostly unpowered, only the RAM is getting constantly refreshed, and perhaps Keyboard/mouse/USB devices are getting power.
 
Oh come to think of that, in my bios I had to select that, there was S1, S3, and some other option. Maybe that other option is doing this.
 
Yeah, if you did either of those modes, prime95 was not continuing to run. Your ram is used to store the state of the PC prior to going in to standby, the computer comes back from standby and the programs that were previously running start to go again. And as markhark said, it will turn off the fans while in standby.
 
this is not directly comparable to yours but my system:

on idle 27-30C (fans off)
on full load 63C (fans off)
on full load 48C (fans on)

Note that this is a newcastle core at 2.6Ghz
 
Originally posted by: MDme
this is not directly comparable to yours but my system:

on idle 27-30C (fans off)
on full load 63C (fans off)
on full load 48C (fans on)

Note that this is a newcastle core at 2.6Ghz
Click to expand...

😱

As a Pentium M owner, I am amazed. Fans off, undervolted, and underclocked I idle 48C-53C. I guess my HS is the crappy oem that came with the laptop, but still. My clock is 1.6ghz, yours is 2.6ghz.

I'm impressed.
 
Something I've come to learn... software temperature monitoring is not very accurate. True results can only be achieved from a separate temperature probe installed manually.

For example, my bios temp monitor says my Vience is running at ~44C, but the MSI temp monitor in Windows says that I?m running at ~30C. On full load this thing is reaching ~50C according to the Windows monitor, but I?ve got freaking 2 POUNDS of copper on my processor so something is messed up.
 
Just to clarify and not to make any misleading claims:

The idle temps in my first post is undervolted (1.25v) and with CNQ enabled (1.3Ghz)
With full speed (2.6Ghz) and normal voltage, I Idle at around 38-40C (Fans 50% - barely audible)

Still, pretty cool eh? no pun intended. 🙂
 
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