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post #11 of 27
Quote:
Originally Posted by Curleyyy View Post

I'm currently doing a run at 45x100 at 1.28v with LLC on extreme. I tried it on 75% though Prime95 stopped within 2 minutes. After putting it on 100% it's stable. I'm trying to see what the lowest voltage I can get on 45x100 is. Also notice that CPU-Z is showing 1.31v while my BIOS is 1.28v, overshooting it by a fair amount I feel. Would it be worth my while picking up some new TIM for the H100i block? I'm still using the stuff that came with it, more than six months ago.

Prime95/Custom Blend, 15 min, 1600mb (not 90%)

1 minute in and temps jumped from 45c idle to 81c.
2 minutes in and it shot up to 89/93c
3 minutes in and it dropped back down to 88c.
6 minutes in and it went up to about 92c.
11 minutes in and it's back down to 82c.
20 minutes in and it's hitting the threshold/limit.

Your cpu vcore in cpuz is what matters, the fact that its 1.28v in bios but 1.31v in cpuz at load means you are using incorrect LLC setting, or if your using offset, means you need to alter the offset. Your vcore in cpuz should be at or just below what you set in bios. A few increments lower in cpuz is to be expected, but if its way off i.e 1.300v in bios but 1.25v in cpuz that means you need to adjust the LLC level.

The fact your prime stopped at 75% LLC but works at 100% leads me to believe its starved of voltage. You are correct CPU PLL voltage can change things, and it might enable you to use slightly less vcore, but not by much.

As twocabs has already said, you will need to delid this cpu if your planning on going for 5Ghz. Its just not possible to get that high unless you have a super golden cpu that requires less than like 1.300v for 5ghz.

Edit: Also worth noting your cpu will keep heating up during prime, so if its at 80/85C for the first 30 minutes it will likely break 90C or more if you run a overnight test, since the tests become harder the longer you run it. Ive often found my temps are highest at about the halfway point of a 12 hour prime95 run.
Edited by $ilent - 3/31/14 at 1:38pm
post #12 of 27
Quote:
Originally Posted by TwoCables View Post

No, you press F12.

I meant press whatever the print screen button was, lol, but thanks for clarifying for him. thumb.gif
post #13 of 27

Yeah, lower the LLC when you see your voltage in Windows being higher than what you have set it to in the BIOS. It should droop down under full load, not rise up. This will help avoid overheating the VRMs.

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post #14 of 27
Thread Starter 
Some great information flowing in here guys, I'll do some tweaking now c:
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post #15 of 27
Thread Starter 
Okay so after running it for about twenty minutes (same as last test).

I set my LLC down a notch from 100% to 75% and CPU-Z is showing 1.28v, spot on to what's in the BIOS. Temps are also at roughly 81c to 94c, which is lower than before, however Prime95 just crashed, so this means that the CPU isn't getting enough juice, though it's close?

Which from my understanding I won't be able to go lower, which means I don't have that great of a chip sm-cry. Although I've noticed people will often pass a stable test at certain voltages, and if they go higher they crash, (1.25 = crash, 1.28 = stable, 1.30 = crash, 1.32 = stable (kind of thing) I'll test out a bunch of other ones c:
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post #16 of 27

Your temps are probably too high for stability.

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It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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post #17 of 27
Quote:
Originally Posted by Curleyyy View Post

Okay so after running it for about twenty minutes (same as last test).

I set my LLC down a notch from 100% to 75% and CPU-Z is showing 1.28v, spot on to what's in the BIOS. Temps are also at roughly 81c to 94c, which is lower than before, however Prime95 just crashed, so this means that the CPU isn't getting enough juice, though it's close?

Which from my understanding I won't be able to go lower, which means I don't have that great of a chip sm-cry. Although I've noticed people will often pass a stable test at certain voltages, and if they go higher they crash, (1.25 = crash, 1.28 = stable, 1.30 = crash, 1.32 = stable (kind of thing) I'll test out a bunch of other ones c:

Like twocabs said, your temps are too high. High temps can cause instability, i.e if say I was at 94c at x.xx speed and x.xxx vcore it might crash, but if i then delidded that chip and ran it at 50c it might be perfectly stable.

I dont want to push you, but your scenario is the prime example for people to delid a cpu, temperatures clearly limiting the overclock. Its when people have a chip that say doesnt boot at 4.7Ghz, that they know its not worth delidding since theyve hit the overclock wall.

@TwoCabs, does that water statement really work? I might try that.
post #18 of 27
Quote:
Originally Posted by $ilent View Post


Like twocabs said, your temps are too high. High temps can cause instability, i.e if say I was at 94c at x.xx speed and x.xxx vcore it might crash, but if i then delidded that chip and ran it at 50c it might be perfectly stable.

I dont want to push you, but your scenario is the prime example for people to delid a cpu, temperatures clearly limiting the overclock. Its when people have a chip that say doesnt boot at 4.7Ghz, that they know its not worth delidding since theyve hit the overclock wall.

@TwoCabs, does that water statement really work? I might try that.

 

Absolutely. Here's the one and only article I've looked at so far ever since I accidentally discovered this for myself:

 

http://ayearofproductivity.com/killer-morning-habit-drink-water-right-after-you-wake-up/

 

I am seeing many more in my Google search, but I'd bet that they all basically say the same thing. Essentially, you're very dehydrated when you wake up. This is why most people think that they're hungry upon waking. Rehydrating when you're dehydrated is a wonderful feeling; it makes you feel like you've been brought back to life. lol You have more energy, you're more alert, your brain power is back to full health, etc. I mean, it's just great. When I wake up, I'm not really ready to face the day until I've had my 1-2 liters of water. What I do is I just drink until I don't want any more. That can sometimes be half a liter, and other times it can be 2 liters. On rare occasions, it can be more than 2 liters. Usually though, it's an average of about 1 to 2 liters for me.

It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #19 of 27
Hmm, I have a big bottle of water by my bed at night and wake up through the night to drink alot.
post #20 of 27
Quote:
Originally Posted by $ilent View Post

Hmm, I have a big bottle of water by my bed at night and wake up through the night to drink alot.

 

Doesn't that make you have to urinate "in the middle of the night"? When I'm sleeping, I want to stay asleep, not be woken up by my bladder. Then, if I wake up because I have to pee, then I certainly don't want to refill my bladder that I just got done emptying.

 

My dad does that. He wakes up 2 times every night to pee. When he wakes up, he drinks some water before going back to bed. I just want to scream. lol I'm like, "Why is he doing that? He just got done emptying his bladder. Does he like having his sleep being interrupted like that?"

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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