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Cpu doesn't get enough voltage!
- Thread starter chainzaw
- Start date
- Joined
- Aug 11, 2008
to OCForums!The drop in voltage between BIOS setting and idle is called vdrop. The drop in voltage between idle and load is called vdroop. Both of these are normal. To get your voltage to stay more in line with your BIOS setting, you have to enable "Load Line Calibration" (or whatever your mobo calls it) in the BIOS. You could also just increase your vcore so when the CPU is under load it will still get the needed voltage.
- Joined
- Aug 3, 2010
- Location
- Aurora, Colorado
The drop in voltage between BIOS setting and idle is called vdrop. The drop in voltage between idle and load is called vdroop. Both of these are normal. To get your voltage to stay more in line with your BIOS setting, you have to enable "Load Line Calibration" (or whatever your mobo calls it) in the BIOS. You could also just increase your vcore so when the CPU is under load it will still get the needed voltage.
This works but it will also increase power consumption and heat. Its usually best to leave it off.
- Joined
- Nov 26, 2005
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- Concord, NC
Well doesn't increasing vcore do the same thing? If 2 PCs are both running the same speed at the same vcore under load, but 1 has LLC enabled wouldn't they both consume the same amount of power and produce the same amount of heat under load? And since the PC w/ LLC enabled runs w/ less vcore while idle wouldn't that PC run at a lower vcore most of the time and therefore consume less power and produce less heat?
Does LLC somehow affect the current? Because that's the only way I can see it increasing power consumption and creating more heat.
IMO it's usually best to leave LLC on. At least w/ C2D/Q it has always worked best for me. I have no experience w/ the I-series, so if it's different there let me know.
- Joined
- Aug 29, 2007
LLC enabled will decrease idle power consumption 
OCing results are almost always enhanced by enabling LLC, C2D, C2Q, i3, i5, i7....doesn't matter, they all will overclock better with it enabled.
However on my 32nm daily rigs, I have mine disabled for longevity
OCing results are almost always enhanced by enabling LLC, C2D, C2Q, i3, i5, i7....doesn't matter, they all will overclock better with it enabled.
However on my 32nm daily rigs, I have mine disabled for longevity
- Joined
- Aug 3, 2010
- Location
- Aurora, Colorado
C2D = Core 2 Duo chips
C2Q = Core 2 Quad Core chips
There is is a difference between the Core i7 and the C2D and C2Q when it comes to Load Line Calibration. It does help on the i7 for certain tasks and applications. It stablizes the Vdroop very well and the i7's work well with it, but the long term effects can kill your CPU because researchers found it spikes voltages at dangerous levels on load. On idle or less stressful use its ok to keep on. The C2D's and C2Q's were more effective with it turned on.
- Joined
- Aug 29, 2007
.........Not exactly...Intel designed their CPUs to droop intentionally, it's a safety feature
LLC is a way for the motherboard manufacturers to cater to the desires of the enthusiast community by disabling droop in a quest for better OCing
And why, you ask, do they do that? Becasue it works
- Joined
- Nov 3, 2008
Intel designed their CPUs to droop intentionally, it's a safety feature
LLC is a way for the motherboard manufacturers to cater to the desires of the enthusiast community by disabling droop in a quest for better OCing
And why, you ask, do they do that? Becasue it works
Intel does recommend not using it though
But who cares most of us void out warranty the day we get the CPU. Some of us don't even get a warranty
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- Aug 3, 2010
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- Aurora, Colorado
Thats true, but the charts are on Antech's review and it shows crazy vcore spikes.
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- Aug 3, 2010
- Location
- Aurora, Colorado
LLC is a way for the motherboard manufacturers to cater to the desires of the enthusiast community by disabling droop in a quest for better OCing
Motherboard manufacture = cares about enthusiasts
Intel = don't give a dime if your CPU fries ur eggs in the morning
- Joined
- Aug 29, 2007
Intel does recommend not using it though
Hang on Archer, I think you're confused....LLC is a feature created by the motherboard manufacturers to bypass Vdroop (Intel's safety feature).....Of course Intel wouldn't want us to use it, it's a loophole
You'll never find LLC on a Dell or HP
- Joined
- Nov 3, 2008
Hang on Archer, I think you're confused....LLC is a feature created by the motherboard manufacturers to bypass Vdroop (Intel's safety feature).....Of course Intel wouldn't want us to use it, it's a loophole
You'll never find LLC on a Dell or HP
No I said what you did, just a different way.
Intel states it could damage the CPU and that is their story. The MB manufactures want to sell boards so they supply the tool. I simply don't use it because I don't need it. That is fine though because my CPU did not come with a warranty. Cook it and get another.
- Joined
- Nov 26, 2005
- Location
- Concord, NC
Those charts are not real oscilloscope readings...they are purely theoretical. Show me some real evidence of damage over time. I'm sure we'd have threads dedicated to it here and at other forums if it were as bad as Anand makes it out to be. Many folks here have been running w/ LLC enabled for years.
Look at my posts here to see what happens when I modify Anand's graphs to show what happens when you have to increase vcore to account for LLC being off. Also take note of my other arguments on why the CPU's transistors will probably never see those spikes...there are capacitors on the mobo and the bottom of the CPU to smooth the signal out. Unfortunately, we will never be able to get an oscilloscope inside the CPU (past all the capacitors) to see the actual spikes that the transistors see.
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- Aug 3, 2010
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- Aurora, Colorado
If i had the evidence i would present it. Like Archer stated too...Intel says that it will damage the CPU. Besides...are we talking Core 2 Duo/Quad? Coz thats what your link is pointing toward and talked about in the thread...not the Core i7. Also, Andtech just popped in my head from when i read it...but its not the only source. I'll try to look up some sources i found before talking about this later today.
- Joined
- Dec 4, 2008
LLC is great. A function I've got to have and use. Enabled on all of mine. No problem with longevity just yet.
