Vdrop Sabertooth 990FX -- HELP!

[marceloesp]

So, Im a little lost with the "power" options on my mobo bios, I don't know what is safe to do.. To be honest I need to know that options r "safe" to set to make my vcore be the one "locked" that I set on bios.

I use a Aerocool E80-700w power supply (pretty good and NEW)

I set 1.4 but I got 1.3.. if I set 1.45 I got 1.4... 1.42... 1.38 (it flutuates) the value change a little, I would like to know how to make my vcore be the one set on the bios and make it don't "flutuate"

Any suggestions? There r a lot of "cpu power options"...

Thx

[Josie Wales]

Fluctuation is normal. CPU's are dynamic devices that have constantly varying voltage and amperage requirements. As the load changes so does the need for power. If you had a high speed measuring device, like an oscilloscope, you would find that the voltage constantly moves up and down within a narrow range. The vCore setting you enter into the bios is the maximum allowable voltage for that voltage range. The bios automatically sets the minimum allowable voltage based on your vCore setting and then works to keep the actual operating voltage between the min and max at all times while providing the exact amount of power required.

[prudhomb]

Im suspicious about the aerocool psu, never heard of that brand.

[marceloesp]

Originally Posted by prudhomb

Im suspicious about the aerocool psu, never heard of that brand.

Tested by http://www.hardwaresecrets.com/ (100% ok)

Found a way to hold the vcore really stable

Just used CPU Load Line Calibration -> High
And my vcore got really stable and i just lost -0.01v

Ex:. Bios = 1.45 on Windows = 1.44 stable!!!

LOVE THIS MOBO!

[Josie Wales]

Originally Posted by marceloesp

Tested by http://www.hardwaresecrets.com/ (100% ok)

Found a way to hold the vcore really stable

Just used CPU Load Line Calibration -> High
And my vcore got really stable and i just lost -0.01v

Ex:. Bios = 1.45 on Windows = 1.44 stable!!!

LOVE THIS MOBO!

Your vCore is no more stable than it was before, in fact is still fluctuating wildly. All you did is change the calculated max voltage using LLC. The apparent average operating voltage just registers roughly the same as your bios vCore setting. The CPU operating voltage is still moving between the new min and max voltages. Most people use LLC just because it makes them feel better - the illusion is rather satisfying.

[DarkFox]

um...... So your saying load line calibration doesnt actualy change the level in which it dynamicaly adds voltage as you go under load? Sound like your a bit Jadded....

The VCore is more stable, the motherboard now reacts stronger to counter the drop as the processor goes under load.

He didnt change the calculated max, that is still the 1.45 set. With no LLC enabled under load it drops to whatever it will be with 1.45v set. For example, just numbers here no real basis, if he set 1.45v and that equals a 60% drive on the vregs at idle, then at load that 60% drops cause the amperage draw goes up and he ends up with his 1.35 or whatever. With different levels of LLC under load it will change that % of drive. so where idle = 60% = 1.45v, LLC high may be load = 70% = 1.44v(load.)

So where his target is to get 1.45 load, withought LLC he would be able to get it by running the chip higher all the time. LLC allows you to compensate this by actualy driving harder under load. its not just a numbers trick....

Additional Comment:

op, glad you got it figured out. that is 100% what that function is there for and designed to do.