Intel i7 2600k - do I have a lemon?

[Macgruber]

hello fellows who always save me with your knowledge that i much appreciate

Intel i7 2600k + MSI z77a-g45

4.4ghz @ v1.305 drooping all the way to v1.272 / v1.280

I've seen peopel hit 4.4ghz with less than v1.3 so do i have a lemon?

At this V im passing ibt 10 runs on standard, then i do the 10 runs on standard again and it randomly fails at a random point


lemon or not a lemon, that is thee question!

 

[ShintaiDK]

Or people set too high demands?

 

[Macgruber]

Or people set too high demands?

do they? what OC are you running? im all ears for info and knowledge

but if its not constructive crticism and its negative,i really cant appreciate it man, so, tbh, if you have any opinion toward my post please let me know, but dont just drop your 2cents and dont answer any of the above


unlike some i really appreciate the help i get regardless if i am able to show that (english isnt my first language or the one i think in ) so i have hard time whne people are negative :

 

[dma0991]

AFAIK, SB processors are still considered good if it is capable of doing 4.5GHz@1.35V. SB is more resilient towards higher voltages relative to temps unlike IB.

 

[ShintaiDK]

Yep, 1.30 to 1.35V is the norm, not below.

(English aint my first language either )

 

[Macgruber]

ty guys you made me feel like im not completely in the deep end of the pool xD

i guess i will keep bumping up 0.05 till i can pass every IBT test

also time for me to switch cases to a bigger better case and install my h100 wish me luck

bye !

 

[Vectronic]

1.31v for 4.4GHz is still decent if you consider that stock is 3.4 to 3.8, that's a 15% "free" increase.

Some people can only get 4.4GHz with 1.32v, so it's not the worst CPU, but not the best either. 1.3v ± 0.025 is normal.

The main question isn't whether or not it's a dud, but how much you can get out of it, everything beyond 3.8GHz is "free", are your temperatures alright? go higher.

Also remember that it's not just VCore that helps with stability, there's other factors, like CPU features, C-States, Spread Spectrum, etc, and VTT and PLL can play a fairly big roll in stability.

In an increase in VTT/PLL voltage might allow you to drop VCore by 0.01v... or for that matter, a drop in VTT/PLL might do the same.

 

[DominionSeraph]

Does it run at 3.4GHz? If so, it's not a lemon.

/thread.

 

[lehtv]

If it was a lemon, you'd know it by the CPU socket soaked in juice and the surrounding motherboard splattered with seeds and pulp.

 

[notty22]

Reading guides and your motherboard manual can help. At least you can identify all the options in your bios, and what others consider important/relevant. And can relate to those options and advice.

 

[Maximilian]

If it was a lemon, you'd know it by the CPU socket soaked in juice and the surrounding motherboard splattered with seeds and pulp.

:awe:

Wins the thread!

 

[Kenmitch]

What's your PLL voltage. Reason I ask is by default my MB does 1.832v's running at 4.5GHz is stable@ 1.32v's (2550k) but if I drop PLL to 1.792v's IBT will error but no bsod. My board has no option between those settings. Spec = 1.80v's I believe. Might be worth bumping it a little to see if helps or not.

 

[BrightCandle]

From what I gather 4.5 is about the lowest these chips go, the good ones go to about 4.8. So its not a lemon, its probably about average. But you may find with some playing with other voltages that you can get stable maybe another 100Mhz higher.

 

[Zap]

From what I gather 4.5 is about the lowest these chips go, the good ones go to about 4.8. So its not a lemon, its probably about average. But you may find with some playing with other voltages that you can get stable maybe another 100Mhz higher.

Maybe. Maybe not. There are two issues to consider.

1) There are two types of posts about overclocking results. First are people bragging about their overclocks. Second are people wondering why their overclocks aren't as good as those bragging.

2) Sometimes you can get higher clocks, but you may be limited by your personal comfort level on things such as temperatures and voltages.

 

[Macgruber]

I appreciate all the posts

Yes i do need help with PLL and VTT because i randomly pass 250 standards ibt test then i randomly fail 1 out of the 250 on the next run i do

ive already set the Vcore to v1.3200 and im not happy , i wanst getting bsods at like v1.31 but i was under the impression if IBT ever fails any test period random or repetated that i truly am unstable

my cpu pll voltage is [Auto] i do need some more help with these settings xD

i am running iBT in the background doing 250 standard tests so my temps are high
im currently trying to read about the vdroop offset control and pll votlage.. i know i can run at lower voltage stable if i can get those two setings properly :/

 

[Macgruber]

wow i dropped vcore to v1.31 and set PLL voltage to 1.7 and now im not failing any IBT's , not sure whether i should lower voltage more and more or pll voltage more

im still reading on it

 

[Rvenger]

55c bios temp looks high to me. I would check your heatsink. What is your highest core temp on IBT?

 

[Macgruber]

55c bios temp looks high to me. I would check your heatsink. What is your highest core temp on IBT?

thats a click bios temp reading i figured you would have known since i said im running IBT in the background while doing so.

i dont pass 60-63*C im using Corsair H100

 

[Vectronic]

I can drop PLL as far as it will go on my board (which is 1.585 or something) and it has no effect on CPU... however, I can't overclock my memory with that voltage, I have to raise it to 1.603 for stock RAM but lower timings, 1.709 for +200MHz, 1.75 for + 400MHz RAM...

 

[Macgruber]

I can drop PLL as far as it will go on my board (which is 1.585 or something) and it has no effect on CPU... however, I can't overclock my memory with that voltage, I have to raise it to 1.603 for stock RAM but lower timings, 1.709 for +200MHz, 1.75 for + 400MHz RAM...

im trying to read up on the PLL but all these other forums, videos, and "guides" dont give me a cut clear answer as to why it should be X for X reason

i find it weird that im able to run stable IBT 100% now with setting it to 1.7v having vcore dropped back to v1.31 but now i dont know if i should be dropping pll more than 1.7v or keeping at 1.7v and dropping vcore to the least possible

i had everything on [Auto] before because i figured it would be safest to auto adjust

edit - http://www.tomshardware.com/forum/270338-29-lowering-vcore - i read about the guy dropping from v1.4 vcore to v1.06 and i get scared

is it safer to keep a higher vcore and all other settings to auto, or to manipulate VDROOP or PLL and have a super low vcore?

edit - now vcore is at v1.295... but i do notice the time it takes vs speed (GFlops) in IBT now is more time and lower speed than having a higher vcore and no pll voltage

im reall scared i dropped vcore so much and its still stable -_-

 

[pwoz]

edit - now vcore is at v1.295... but i do notice the time it takes vs speed (GFlops) in IBT now is more time and lower speed than having a higher vcore and no pll voltage

This means there is error correction going on. The processor is not unstable enough to cause a crash, but it's not getting accurate results either. The loss in speed is due to the resources being used to error correct.

 

[Macgruber]

This means there is error correction going on. The processor is not unstable enough to cause a crash, but it's not getting accurate results either. The loss in speed is due to the resources being used to error correct.

im at v1.305 vcore now and not failing any tests

i still dont know how to determine some of the results as far as crashes/errors (sometimes i run 10 times pass 10 times, sometimes i run 10 times randomly fail) so i've increased voltage to where i can run 100 times without a fail

also, i havent found any cut clear links on the pll voltage vs higher vcore and ive talked to multiple people but they cant tell me whether
v1.7 pll + v1.305 vcore is worse than v1.32vcore [auto] pll

 

[Vectronic]

Trying to figure out PLL is sort of practically impossible, to find the ideal voltage for a given clock/multiplier, you'd have to know the tolerances of the entire system/loop.

You could yank off all the heatsinks of all your chips, do a bunch of googling, and reading of white-papers, and schematics, and build a database of appropriate voltages for a given system... there would still be error margins.

So just "best-guessing" it is more practical, which is what probably everyone on any forum is doing, they don't really "know".

Overvolting, and undervolting will obviously cause havoc (under) if not damage (over), so basically just go with the usual suggestions, keep it over 1.3 (if your board will even go that low) and under 1.9 volts.

If lower PLL and lower VCore but the same multiplier are producing slower results, it's probably because it's dipping below the actual displayed clock values, it's just too quick for CPU-Z or whatever else to measure it.

 

[tweakboy]

You got a apple, come on......... now!!!!!!!!!!

 

[tweakboy]

Like the other guru said, people set too high of expectations...........