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VDroop-Issue.....any experiences? - Page 2

post #11 of 28
In CPU-Z, does the voltage showing for the CPU fluctuate more or less with LLC at 0%? If vcore is set to 1.425v in the BIOS, what does it read as in CPU-Z when idle at the desktop and when running stress tests?
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post #12 of 28
Thread Starter 
I tell you when I get the PC back running, I tried to restart and tweak settings in BIOS and now I dont get a video signal on my monitor anymore although I tried to switch on and off now for about half an hour......


I hate this.........
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post #13 of 28
Might be a bad OC setting. Try disconnecting the power to the PSU and then clear the CMOS. That should reset settings back to default in the BIOS and hopefully let you boot successfully.
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post #14 of 28
Tbh, i'm gonna echo what people have said already. Disable LLC completely, and see how far you can get. Use LinX for 10 runs at Max memory. If it dont crash, you can safely up the speed and leave the Voltage alone. If it does, then you need more voltage or to lower the clock speed. Once you are ready to test stability properly, go for like, 30 runs of linX max memory, and prime95 small fft for 10 hours. Then you can consider it stable enough (not 100% but good enough).
LLC has given me alot of problems, and in the end, while LLC kept my idle temps lower, it didn't help load temps and only made my system unstable at idle (it would crash playing youtube vids but pass linx till the end of time).

Once you reach your max temps and are stable at a certain speed and voltage, thats your final OC. To get anything more, you would need better cooling.
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post #15 of 28
LLC is not supposed to help CPU temps in any way. It simply helps alleviate issues with large vdroop on ASUS motherboards. Let's say for example in the BIOS you have set your vcore for the CPU to 1.45v. You boot into Windows and then open CPU-Z and your vcore is reading at 1.41v. When you start stress testing, lets say your vcore goes up to 1.44v in CPU-Z and then fluctuates between 1.44v and 1.43v. Essentially, enabling LLC can help to eliminate that wide vdroop to where it only fluctuates about .01v rather .03-.04v.

This means that the voltage when in Windows will remain closer to what is set in the BIOS and thus, temps might be a bit warmer as now the CPU is running at what it should be, rather than a lesser voltage than what was set int the BIOS.
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post #16 of 28
Thread Starter 
Well, I just tried to be a bit more cautious.....

3,6 Ghz at stock voltage (1.3v) LLC off

prime95 ran fine for about 40 min, then I exited the program....

....opened my explorer: freeze!

Additionally, after such freezes I have massive boot problems and need about 20 tries to even get to BIOS without lockup.

I'm going to try and replace my MoBo tomorrow -.-
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post #17 of 28
In the meantime, keep the CPU at 3.6GHz and bump the voltage to 1.35v. Keep the LLC disabled and bump the NB voltage one notch and see what happens. Maybe run Prime95 for an hour and if no failures, exit the test and then try to launch a browser window and see what happens.
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post #18 of 28
Quote:
Originally Posted by darklink View Post
LLC is not supposed to help CPU temps in any way. It simply helps alleviate issues with large vdroop on ASUS motherboards. Let's say for example in the BIOS you have set your vcore for the CPU to 1.45v. You boot into Windows and then open CPU-Z and your vcore is reading at 1.41v. When you start stress testing, lets say your vcore goes up to 1.44v in CPU-Z and then fluctuates between 1.44v and 1.43v. Essentially, enabling LLC can help to eliminate that wide vdroop to where it only fluctuates about .01v rather .03-.04v.

This means that the voltage when in Windows will remain closer to what is set in the BIOS and thus, temps might be a bit warmer as now the CPU is running at what it should be, rather than a lesser voltage than what was set int the BIOS.
If your voltage goes up when you start stress testing, then LLC is on. Yes, LLC reduces the gap, but not instantly. There will still be big spikes of voltage, they just happen very quickly. There is a big thread on here somewhere with an in depth explanation and testing of LLC. But to sum it up, its bad.
The reason LLC can help to reduce idle temps (yes i know thats not a specific aim of LLC, just a side effect) is that when LLC is on, say you are at 1.2v idle, with LLC off, you would have a higher idle voltage in order to account for vdroop from loading the cpu.
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post #19 of 28
Thread Starter 
Quote:
Originally Posted by darklink View Post
In the meantime, keep the CPU at 3.6GHz and bump the voltage to 1.35v. Keep the LLC disabled and bump the NB voltage one notch and see what happens. Maybe run Prime95 for an hour and if no failures, exit the test and then try to launch a browser window and see what happens.
Instant freeze after firing up a small FFT test.....
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post #20 of 28
LLC must have worked differently on my P45 board as when I had LLC enabled, there was virtually no difference from what was set in the BIOS to what was read in CPU-Z. In the BIOS the vcore was set to 1.3125v and in Windows the vcore was reading as 1.302v (difference of .0105v). This value never changed between load and idle. When LLC was disabled with 1.3125v in the BIOS for the vcore, CPU-Z would report 1.288v at idle and 1.302v at load (overall difference of .0245v).

Maybe ASUS changed something with LLC on their newer boards.
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