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The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 45

post #441 of 713
Quote:
Originally Posted by compudaze View Post
Measure with a DMM.

Every CPU is different and only time will tell.
I actually have a DMM laying around but I have no idea how to use it.
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post #442 of 713
Quote:
Originally Posted by grassh0ppa View Post
I actually have a DMM laying around but I have no idea how to use it.
This is where to measure the voltages, I also measure it there.




Dots in red and blue are measure points, Im not 100% sure which one is more accurate but the dots in blue show +0.010v more.


@compudaze
If the processor runs at an idle voltage of say 1.458 will it still accelerate degradation as compared to it idling at 1.2v?

Because as of now Im using DVID for my 4.8Ghz but with a very large offset to make it stable for low load games as the voltages dont increase that much if only 1 or 2 cores are used when power saving is enabled.
Edited by EarlZ - 5/14/11 at 11:03pm
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post #443 of 713
Quote:
Originally Posted by EarlZ View Post
@compudaze
If the processor runs at an idle voltage of say 1.458 will it still accelerate degradation as compared to it idling at 1.2v?

Because as of now Im using DVID for my 4.8Ghz but with a very large offset to make it stable for low load games as the voltages dont increase that much if only 1 or 2 cores are used when power saving is enabled.
No idea, but I would imagine 1.458V with ~80 amps (load) is a lot more stressful than 1.458V with ~10 amps (idle).
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post #444 of 713
I idle at 1.458 and load at 1.428v but anyway I got a BSOD (01E) after like having my PC idle for about 20hrs, Was watching a youtube video and them bam!! Must have been the power saving causing this as I have it enabled..

EDIT:

After doing some googling, a lot of site posted that 1.380v is the 24/7 safety limit for SB.. this information roughly dated late January.
Edited by EarlZ - 5/15/11 at 12:12pm
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post #445 of 713
That was a great review!! I have the same board and the same chip so I am learning quite a bit from your hard work and expertise, THANK YOU!!!
post #446 of 713
Thread Starter 
just read from the top point like i showed, its hard to read the vcore from under the board. if you want the most precise voltage read point, its on the top of the board, but very hard to hit. The inductors are accurate enough for this type of measurement, then are the MLCC on the back of the socket, which are pretty easy to figure out, but they are best insulated from electrical noise.

Stickybuds: you are welcome
    
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post #447 of 713
Quote:
Originally Posted by Sin0822 View Post
just read from the top point like i showed, its hard to read the vcore from under the board. if you want the most precise voltage read point, its on the top of the board, but very hard to hit. The inductors are accurate enough for this type of measurement, then are the MLCC on the back of the socket, which are pretty easy to figure out, but they are best insulated from electrical noise.

Stickybuds: you are welcome
I have easier access at the back of the board, which one gives a more accurate reading, the one with the blue dots or the green dots? the blue dots give me about 0.010mv higher.
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post #448 of 713
I have flashed my bios to f4a I was wondering how to switch between bios. So I can have one set for everyday (stock) and one OCed. And also do I need to flash each bios seperately or when I did the one did it do both.
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post #449 of 713
AFAIK, theres no bios switching its just main and back up bios.. its recommended that the main and backup bios always match.

Flashing is only done to the main, when you power on your PC hold alt and spam F12 till you get the copy main to back up message.
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post #450 of 713
eh, Im not sure what I'm doing with the DMM. I don't really care either, I'm just frustrated my 4.5ghz is only stable at 1.36Vcore when I've heard of people getting 5ghz @ 1.365vcore. Must have gotten a crappy chip.

Then again, my temps still dont rise above 50 so I suppose that's something to be happy about.
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