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PSU's and vdroop?

post #1 of 7
Thread Starter 
Hey

Ive been trying to push my CPU to 4ghz countless times with no luck on the safe voltage zone because if i set it to 1.48v on the bios with LLC enabled, i get vdroops to 1.4v and spikes of 1.6v, i wonder if this is because of a bad PSU or just the MB?

For reading the voltages im using cpuz and speedfan.


Someone told me that the MB is okay, so i wonder if its a good time to upgrade my PSU, or i should change the MB again.. rolleyes.gif


Thanks for helping me out
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post #2 of 7
VDroop is typically due to motherboard/CPU. Transient spikes can be the PSU though, if it's unable to switch properly to handle loads, though that could also be the fault of VRM.

Unfortunately I don't know enough about your particular motherboard to speculate on what it's up to.
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post #3 of 7
Vdroop is never, ever, ever, ever due to the PSU. Vdroop also is not a problem. It's a good thing. The only people who disable Vdroop are people who don't know what it is*. If you don't know what it is and why it's reducing your CPU Vcc, don't mess with it.

*There are cases in very, very high-end overclocking where you may want to disable Vdroop. 99% of the time, though, it's someone who just thinks "LESS VOLTAGE? BAAAAAD!!!!"



That said, your PSU is still crap. Sorry.
post #4 of 7
Thread Starter 
mmh well i can achieve 4ghz easy on 1.5v.. the thing is i cant provide 1.5v stable to the damn cpu... if i set 1.45v on the bios, without LLC, it will show 1.36v on cpuz (and BSOD on load @ 3.8+ghz)

if i set 1.48v on the bios with LLC enabled, it will show 1.36-1.55v on load and 1.6v+ spikes... i dont want to fry my CPU...

Now why would i want to have this kind of behavior on my CPU voltage supply..?
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post #5 of 7
Turn off LLC. And the problem will probably go away.
post #6 of 7
Quote:
Originally Posted by Phaedrus2129;13302167 
Vdroop is never, ever, ever, ever due to the PSU. Vdroop also is not a problem. It's a good thing. The only people who disable Vdroop are people who don't know what it is*. If you don't know what it is and why it's reducing your CPU Vcc, don't mess with it.

*There are cases in very, very high-end overclocking where you may want to disable Vdroop. 99% of the time, though, it's someone who just thinks "LESS VOLTAGE? BAAAAAD!!!!"



That said, your PSU is still crap. Sorry.

^this

Gigabyte and Asus normally have bigger power regulating circuitry with their boards with more filtering caps so they can control it better. Vdroop they can use less filter caps but it can have a bigger effect when overclocking
post #7 of 7
Quote:
Originally Posted by phaedrus2129;13302167 
vdroop is never, ever, ever, ever due to the psu. Vdroop also is not a problem. It's a good thing. The only people who disable vdroop are people who don't know what it is*. If you don't know what it is and why it's reducing your cpu vcc, don't mess with it.

*there are cases in very, very high-end overclocking where you may want to disable vdroop. 99% of the time, though, it's someone who just thinks "less voltage? Baaaaad!!!!"



that said, your psu is still crap. Sorry.

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