Gigabyte GA-MA74GM-S2: AMD 690G, Take 2
No, indeed not, but then in the absence of an explanation why it's acting up in the first place it's hard to tell what's going on.alexx wrote:btw, it still does not explain why with the same power meter I do not achieve the same (bogus) readings when manually undeclocking/undervolving the system.
I'm wondering whether it's got something to do with the power factor correction. The meter I have (a Brennenstuhl) shows fairly constant current but cos(phi) starts wandering all over the place when I start seeing these funny readings.
so am I
http://www.brennenstuhl.de/content.php? ... etails=809
it's Digital Weekly Timer HBT 100
you have the same?
I was also thinking if this is not someting PFC related, but how to check?
Actually, I am not sure anymore that what I see on this things is actually a reality
http://www.brennenstuhl.de/content.php? ... etails=809
it's Digital Weekly Timer HBT 100
you have the same?
I was also thinking if this is not someting PFC related, but how to check?
Actually, I am not sure anymore that what I see on this things is actually a reality
no, actually I have "the Wattage and current meter PM 230"
looks kind of the same:
http://www.brennenstuhl.de/content.php? ... etails=807
looks kind of the same:
http://www.brennenstuhl.de/content.php? ... etails=807
Yes the PM230 is the meter I have.
During the times the power reading is fluctuating back-and-forth from ~58W to 18W, if I put it in the mode which shows current rather than watts the current is steady at about 0.28A, whereas the cos(phi) is alternating between ~0.21 and ~0.85.
During the times the power reading is fluctuating back-and-forth from ~58W to 18W, if I put it in the mode which shows current rather than watts the current is steady at about 0.28A, whereas the cos(phi) is alternating between ~0.21 and ~0.85.
Last edited by nutball on Mon Mar 23, 2009 1:15 pm, edited 3 times in total.
good idea. So I've redone all the tests and these are the results:
this is as low as I could get with this setup; not impressive, but I can live with it.
Code: Select all
Cool & Quiet
Freq Current, A (load) Power, W (load)
2700 0.27 0.34 60.6 76.33
2600 0.26 0.33 58.4 74
2400 0.25 0.31 56.1 69.6
2200 0.24 0.28 54 62.9
2000 0.24 0.28 54 62.9
1800 0.24 0.27 54 60.6
1000 0.22 0.24 49.39 53.88
Manual underclocking/volting: multiplier: x5, Vcore: 0.8v
0.20 0.21 44.9 47.2