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How do you get around the 2600K idle bug? - Page 7

post #61 of 117
Quote:
Originally Posted by BallaTheFeared View Post
Prime also runs my cores to 100%, confused on that statement.

Depending on my OC, I use different LLC settings.

For my current 4.7Ghz overclock I use 1.36 set in bios with high LLC, I also turn up the vrms to 140% capacity, it helps keep the idle voltage up as well.

At idle I only drop down to 1.356, at load I stick around 1.36 mostly, however it does go up to 1.37... My chip isn't that great, I could probably fine tune it a bit more but I'm switching out profiles from 4.2 to 5.3 so often right now I just don't have time.
Why does it stick so close to your manual set Vcore when LLC at high? Is it because you're running those VRMs at 140%?
    
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post #62 of 117
Quote:
Originally Posted by EarlZ View Post
@Falkentyne

Just wondering if you have power saving enabled? When I turned off c3/c6 it solved all the idle issues ( I believe ) and now my issues are in middle to light load.

With my 4.8Ghz @ 1.452v ( DVID +0.115v offset) I had no issues with anything at all but I think I'll just tone down to 4.5Ghz im positive there will no difference in gaming and every usage between 4.5 to 4.8

You recon I just should settle with a 1.360v max load at 4.5Ghz and just call it a day w/o looking for the lowest possible Vcore?
I've never had that stuff enabled.

And at 5 ghz, I just idled for 1 hour in the Bad Company 2 main menu, at 0.01v lower vcore than before, by doing the same thing that made 4.5 ghz more stable (BTW 4.5 ghz is still 12 hours prime stable at 1.260v load with PLL on default), which was raising CPU PLL voltage to 1.86v. Didn't get a 0x124 BSOD at all. Maybe 1 hour wasn't long enough to test, although I also spent another hour or so idle in the desktop without a 0x124, so raising the PLL voltage definitely helped.

BTW Internal PLL Overvoltage has absolutely jack squat to do with the PLL voltage. I enabled it at 4.5 ghz for giggles and set PLL voltage back to default (auto) and 1.236v load.... 0x124 BSOD in Prime in less than 5 minutes.
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post #63 of 117
Quote:
Originally Posted by ShamisOMally View Post
EDIT: I don't feel like you are targeting me, I just feel Prime95 doesn't do as good a job as Linpack does

My last system a Phenom II 1090t I ran prime95 for 24 hours at 1.3000 volts 3.6ghz and it passed, I loaded up OCCT Linpack and it failed within 11 minutes, I had to bump it up to 1.3250 volts to be 100% stable
This is exactly why you run both for long periods of time. They stress different parts of the system in different ways. Long periods of time is key (in spite of what the "20 runs" crowd says) because many errors are time dependant.
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post #64 of 117
Quote:
Originally Posted by turrican9 View Post
Why does it stick so close to your manual set Vcore when LLC at high? Is it because you're running those VRMs at 140%?
It doesn't stick that close, here are my idle/load/voltage and the variance of voltage I get:


Idle:


Load:


Voltage:



I get my highest voltage at idle, lowest at load. However if I switched those around, I would BSOD 124... Does it make sense? No not really, however I'm not smart enough to argue with what works.

I don't think HWmon is reading it exactly right, the highest I saw it at idle was 1.368v, the lowest I saw it under load was 1.346v.
    
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post #65 of 117
It makes complete sense, the CPU needs the same amount of voltage depending on speed, not Load, therefore at idle you need atleast the same or more volts at load.

This is why cracking LLC up all the way and having the load Vcore higher than idle vcore causes random BSODs as 70% of the time LLC wont kick in and the CPU is unstable.
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post #66 of 117
I don't think you understand what I said.

When its the other way around and my idle voltage drops as low as it does at load it will BSOD.

However under load it can go lower than it can at idle, the same voltage at idle that would cause a bsod will not cause a bsod at load.


Maybe I'm retarded, however as far as I know every other cpu I've ever owned required more voltage to run load than it did idle.
    
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post #67 of 117
Quote:
Originally Posted by AyeYo View Post
This is exactly why you run both for long periods of time. They stress different parts of the system in different ways. Long periods of time is key (in spite of what the "20 runs" crowd says) because many errors are time dependant.
Quote:
Originally Posted by jasjeet View Post
It makes complete sense, the CPU needs the same amount of voltage depending on speed, not Load, therefore at idle you need atleast the same or more volts at load.

This is why cracking LLC up all the way and having the load Vcore higher than idle vcore causes random BSODs as 70% of the time LLC wont kick in and the CPU is unstable.
This isn't ALWAYS the case.
You may find that you can BSOD at prime in 5 minutes, but find that you can game all day and night at lower vcores. And temps DO matter, so does load.

Explain then, for me, how I can run Bad Company 2 for 5 hours straight (about as long as I can play before going crazy) without a BSOD, but Prime crashes in 5 minutes? Answer is obvious: Prime loads all the cores, raises the heat over 15C higher....

Also, based on your logic, turning off Hyperthreading shouldn't allow you to substantially lower the vcore, yet it does...

Also, you have to pay attention to the difference between idle and full load voltages. If it's about 0.02v or less, and you get some 0x124's at idle, you MAY be able to compensate by raising the CPU PLL voltage, especially if light load gives you 0x124 occasionally too, but full load doesn't. This won't help if it's a 101 error, though...(as that's a complete core freeze).

Remember that every CPU is different. My lower VID 2600k responds favorably to increasing the PLL voltage, and this chip is the one that 0x124's in prime at 4.5 ghz if the vcore is too low, instead of 0x101, and had some idle 0x124's at 5 ghz (in both cases, raising the PLL voltage helped stability wth the 124's. On the other hand, my worse (now heavily degraded) 2600k ALWAYS 0x101's in prime at 4.5 ghz without enough vcore, and PLL voltage doesn't do anything.
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post #68 of 117
LLC also seems to affect my idle vcore, take that for what you will.
    
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post #69 of 117
Thread Starter 
Quote:
Originally Posted by AyeYo View Post
This is exactly why you run both for long periods of time. They stress different parts of the system in different ways. Long periods of time is key (in spite of what the "20 runs" crowd says) because many errors are time dependant.
Its just in all the systems I build for customers that want pre-overclocks etc, Prime95 has never, ever in my experience produced a problem that linpackers can show in under two hours

I've left systems running for days stress testing Prime95, pass it all, load up linpack and within 30-40 minutes fail it
post #70 of 117
SB is different, linx/ibt don't show the errors like prime blend will.

It's a well established fact dating back to January when we were all attempting to reach 5Ghz for the club.
    
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