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 VDroop... what izzit?, does it affect other brands too??

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bryanyeo87
post Jul 10 2008, 03:29 PM

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Vdroop is there to protect both the CPU and motherboard mosfets from from overshoots in load to idle transitions

Take for example, On the P35-DS3, the bios set voltage is the absolute max that the cpu will be fed considering from overshoot from load to idle transitions. That is why upon monitoring, the droop appears to be alot.

This implementation should be apparent in most motherboard that do not have load line calibration.

This "phenomenon" is there due to the current limitations of power delivery designs, as the capacitor and chokes feeding the cpu with power require a "split" second charge up, as well as discharge. It is also apparent in gpu's as well.


However, if you understand this and would still like to mod the board for a lower droop, all you need is a multimeter and a pencil smile.gif

This post has been edited by bryanyeo87: Jul 10 2008, 03:32 PM
bryanyeo87
post Jul 14 2008, 07:19 PM

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QUOTE(matyrze @ Jul 11 2008, 11:12 AM)
so does it mean the vdroop is controlled by mobo to prevent the "limitations in psu design" from burning our cpu?vdroop is really made to be exist by mobo manufacturers intentionally right?so using a pencil to to get a smaller vdroop is kinda suicidal also right?
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it means,

its there to protect your CPU and the mosfets from voltage spikes.

penciling to get a lower droop is not suicidal, just that it lowers the lifespan of the mosfets(quad cores and high speed cpus, oced, etc etc 4ghz >) /cpu (voltages exceeding 1.4v)

So it doesnt matter if the board is a DFI, asus ROG, or even a lowly ECS mobo, they all suffer from the same thing. no/less droop = less life span of both mobo and cpu.
bryanyeo87
post Jul 15 2008, 08:56 AM

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QUOTE(phunkydude @ Jul 14 2008, 08:21 PM)
so, the bigger the vdroop.. the healthier the mobo/cpu is?

my vdroop+vdrop = 0.125v  doh.gif

bios-1.325v
idle-1.248v
load-1.200v
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good la, your spikes to the cpu wont go above your bios set voltage of 1.325v laugh.gif

technically, and theoretically, it prolongs the mobo mosfets and cpu life span. when I said technically, and theoretically, at least that is what it is designed to do



QUOTE(matyrze @ Jul 14 2008, 10:14 PM)
i guess for ocer, they have to find some 'balance' about vdroop..between shortening hardwares lifespan and get higest OCed cpu speed..
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that is what ocing is all about tongue.gif

a balance laugh.gif
bryanyeo87
post Aug 3 2008, 03:40 PM

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QUOTE(dro @ Aug 1 2008, 05:11 PM)
hey guysss

m not sure which one im suffering from....(vdrop/vdroop)
but on bios.....its 1.385v.....on windows its 1.325v
running e2160 on ip35e

how can i counter or reduce its effect?
tqs guyss
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pencil tongue.gif
bryanyeo87
post Aug 8 2008, 08:23 PM

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QUOTE(chchyong89 @ Aug 3 2008, 04:21 PM)
huh? can one mer?? how.. i willing to learn.. thumbup.gif
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QUOTE(dro @ Aug 4 2008, 02:05 PM)
anybody done pencil mod on ip35e?
i tink my cpuz is having some inaccurate reading
cuz even wen i push up to 1.55v.....it still says 1.325v
only everest is giving logical reading ..... 1.54v
so i guess my vdrop is jes 0.01......"i tink"
hehe
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go take a close up pic of your buck phase PWM, its a small little black chip just above the ram slots or near that area, the chip is about smaller then a 1 sen coin


you need a multimeter for the next step after u get me the pics

This post has been edited by bryanyeo87: Aug 8 2008, 08:23 PM
bryanyeo87
post Aug 9 2008, 01:32 AM

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come la, im at Petaling Jaya brows.gif

later mamak fella wonder wtf are we doing, looking at mobo hahahah

This post has been edited by bryanyeo87: Aug 9 2008, 01:32 AM

 

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