1 question for u.. how far pentium/core2 downclock when eist enable. i hear intel power saving not good as amd c&q izit true. long time didnt use intel since pentium4 era. tq

i never use Intel... so I don't really know

if not mistaken around 3-4 multi downwards from stock speed

Conroe's lowest multi is 6 so you do the maths lor. Tak jimat banyak really.

so that mean finally we can lower the multi for intel for oc purpose izzit?

should we have downclock club challenge in lyn....

Check this article from silentpcreview, its about undervolting the processor to save power

http://www.silentpcreview.com/article313-page1.html

the numbers are quite surprising, even the Athlon 64 X2 is pretty amazing (Conroe wasn't out yet for another few months when the article waas written). Never expected AMD's CPUs to take up so little power when tweaked right. Of course, this article makes no sense to overclocking addicts..

Maybe can hold competition for lowest power consuming PC (and probably most silent & coolest running) that can meet a certain level, say, 3000 3Dmarks in 3DMark2003? Should be interesting..

i agree with u
but better if we using superpi only, coz graphic card will effect a lot in 3dmark03. but i donno what happen if using my amd64 @400mhz and pairing with 7950gx2... either one must be choking...

Merom can jimat banyak, because default multi can go as high as 15x. With low bus speed, 6x can actually brings the CPU below 1000MHz. Well, Core2 Duo initial design is for laptop usage, high FSB is not the target. So i guess 6x is pretty sufficient for initial usage.

I said "Lowest POWER consuming". Taking the graphics card into account by including a graphics benchmark would make things even more interesting. Whats the point of saving 20W on the processor only to have it spent by the graphics card? Can set a few categories based on minimum required benchmark performance (can set a variety) and find the best tweaked system for lowest power consumption. Think its about time competitions like this came up, considering how insanely high system power requirements have gotten these days and the current performance-per-watt craze.

Only catch is that they'll need equipment to measure the power consumption, preferably from the wall socket so can also take PSU efficiency into account. For active pfc PSUs with power factors of >0.99 measuring from wall socket is easy (shunt resistors), but for those non-active pfc with lower power factors need slightly fancier equipment which I'm not sure where to get.

sorry my mistake! i got ur point already.. but u just mention how hard to measure total system consumption. even if we using a active pfc psu we still only 85~95% power effeciency and not everyone can afford to buy clamp meter to measure from wall socket plus they can give a wrong information. btw we still need a more supportive member to give more opinion.

Well I just had a few ideas on how to measure system power, however all have their weaknesses. Clamp meters are not cheap, a cheap alternative is to use a shunt resistor in series in the power cable and measure the voltage across it (using a DMM) to calculate the current and power drawn. Problem is when the PSU has a power factor below 0.99, the current measured by this method or with a clamp meter will be higher than the actual amount. Its also possible to use a UPS and measured by the time it lasts before the UPS runs out of battery power-but I heard this is also affected by power factor although I'm not sure.

Btw, power factor and power efficiency are 2 different things. Very few PSUs can boast efficiency better than 85%, even 80% is achieved by only half of the quality brand PSUs while any active PFC PSU can easily achieve PF >0.95. For more details, read the article link below.

PFC decoded
http://www.dansdata.com/gz028.htm

lol i downclock sometimes when not using full capacity

btw, the person must educate the children not 2 play
not downclock

running away from the problem