i5-2500K/2600K batch number and o/c results

[jcniest5]

Lol. Same here. Seems like my chip cannot do 5Ghz.

Maybe you still have better luck in real life. Not me, in anything.

[Falkentyne]

You'd be surprised to know that some people here have to go through a lot of bad too. What happened recently to put you so negative? (go ahead and send a PM if you wish to talk).

And were all your 2600k's Malay (L) series?

[ghmz]

Does anyone get random freezes? I do get them occasionally, and I found that its not OC related. It usually freezes while doing nothing, browsing, etc. I've tried lots of things, but nothing helped. To be honest, I've had dozens of issues with this SB build since I upgrade from my original Conroe. Definitely not happy.

[ghmz]

Maybe you still have better luck in real life. Not me, in anything.

I have a terrible luck at this time though. Unable to find a job and other issues. You are not alone

[Dumo]

Maybe you still have better luck in real life. Not me, in anything.

Don't feel bad JC.

I went through 34 pcs. of 2600Ks and 2 of 2500Ks to find (1) 58X and (1) 56X chips....the rest of 'em were maxed or 4E'ed @53X, 54X and 51X and even 50X down with air or cold

Still if for some reason I have to go to Micro Center nowadays.....then most likely I will take home a 2600K

[jcniest5]

You'd be surprised to know that some people here have to go through a lot of bad too. What happened recently to put you so negative? (go ahead and send a PM if you wish to talk).

And were all your 2600k's Malay (L) series?

Yes, they were/are all L04xxxxxxx.

What makes me more mad is I only try to get what people describe as "good" or "potentially good" batch. I didn't just randomly buy them...

I have a terrible luck at this time though. Unable to find a job and other issues. You are not alone

Economy is bad...hope we can all survive through this hard time together.

[Dumo]

L050A853 under SS again...a bit more BCLK up then max..




Lower Vcore LLC1

[jcniest5]

L050A853 under SS again...a bit more BCLK up then max..

My same batch wouldn't even reach 5Ghz, I believe it was just 4.945Ghz (48x103) at 1.525v something. I sold it to help me get this batch L051B138, which can do 5Ghz but with 1.525v+.

[l0ud_sil3nc3]

My same batch wouldn't even reach 5Ghz, I believe it was just 4.945Ghz (48x103) at 1.525v something. I sold it to help me get this batch L051B138, which can do 5Ghz but with 1.525v+.

don't feel so bad man, I have been through 7 2600k's and 3 2500k's and my best one so far is a 53x

I decided to just pay the premium and buy a 5.5 chip and then continue playing the G A M E

keep your head up, sell off your current cpu and grab another one . . . or two

[jcniest5]

Just noticed that when idle (vcore set to 1.515v manually in EFI BIOS), in Windows 7, CPUZ reports 1.528v idle, when running Prime95, vcore goes down to 1.518v and just stays there. Overvolt is Enabled in EFI BIOS. Shouldn't vcore go up when stressed? How come it goes down when stressed?

don't feel so bad man, I have been through 7 2600k's and 3 2500k's and my best one so far is a 53x

I decided to just pay the premium and buy a 5.5 chip and then continue playing the G A M E

keep your head up, sell off your current cpu and grab another one . . . or two

Micro Center doesn't allow buying CPU alone within 14 days of each other. If you buy a mobo with it, they are ok with it. If you just buy a processor by itself, it has be more than 14 days with each purchase.

[Dumo]

Micro Center doesn't allow buying CPU alone within 14 days of each other. If you buy a mobo with it, they are ok with it. If you just buy a processor by itself, it has be more than 14 days with each purchase.

Not here @ MCs NY though. We can buy as many as we want...even 2-3 days in a row (everyday if we want to)

[jcniest5]

Not here @ MCs NY though. We can buy as many as we want everyday.

Don't know when they began implementing that policy...until a week ago or so when I bought my latest 2600K. The cashier was checking my ID and I asked her why she was doing that, that was when I was told about it. Not sure if she was just purposely doing it to me (hope not as I'm not White) or what, but apparently that was the reason.

[Dumo]

Don't know when they began implementing that policy...until a week ago or so when I bought my latest 2600K. The cashier was checking my ID and I asked her why she was doing that, that was when I was told about it. Not sure if she was just purposely doing it to me (hope not as I'm not White) or what, but apparently that was the reason.

Better have a talk with store manager and call/write to their corporate. I hate when a business do that...And I make damn sure they not get away with it

There must be a written policy of what reason/s they need to check anyones ID to complete a sales transaction

[jcniest5]

I'm sure if I do talk to a manager, he would just say "it's a local store policy" of some sort if not all MC stores are enforcing it elsewhere. But I will write to their main HQ first and see what kind of answers I will get. I'm ready for another 2600K in my quest for a golden one.

[l0ud_sil3nc3]

Just noticed that when idle (vcore set to 1.515v manually in EFI BIOS), in Windows 7, CPUZ reports 1.528v idle, when running Prime95, vcore goes down to 1.518v and just stays there. Overvolt is Enabled in EFI BIOS. Shouldn't vcore go up when stressed? How come it goes down when stressed?



Micro Center doesn't allow buying CPU alone within 14 days of each other. If you buy a mobo with it, they are ok with it. If you just buy a processor by itself, it has be more than 14 days with each purchase.

here is a simple way around that, pay cash and don't give them your name and honestly you shouldn't even have to do that as all the Microcenter's I have been to have allowed me to come get one a day and that includes the Houston store and both of the California stores

maybe slip a one of the Microcenter guys a $20

[PolRoger]

finally the tests seem to end.. as i have multi limit 47x with PLL overvoltage disable

4000-> 1.140 5hrs 12k fft prime 26.5 all ram
4200-> 1.199 13hrs 12k fft prime 26.5 all ram
4400-> 1.248 15hrs 12k fft prime 26.5 all ram
4600-> 1.309 16hrs 12k fft prime 26.5 all ram
4700-> 1.341 3hrs and counting.. (hope to be stable at this setting)

(average voltage values taken from aida64 log file, during prime session)

the bad is i have to forget 5ghz.. with a 24/7 voltage setting
the good is as can be seen from the chart, has super linear scaling (in fact from 4200->4400 should need more vcore bump, maybe some component in core, needed a "headstart" in vcore to function properly? dunno), so hope will be bench-stable for short sessions on 5ghz (assuming it will keep linear, should need about 1.43-1.44 from the chart)

I've binned quite a few 2600K that needed ~ 1.30v to 1.32v for 46x... I would think that one should boot into windows at 52x. It will be a solid daily runner at 46x/47x.

[lv_88]

So I just got my setup 2-3 days ago and testing out, I would´ve been happy with anything above 4.5 and Im at 4.9 already,
going to add a third fan on the Noctua, have tried 5Ghz, works, tho temps worry a bit, but Im going to test the stability throughout the day
at 4.9ghz first, as long as the cpu survives 1-2 years Im happy haha
Batch: L046B509

EDIT: Yep, 4.9Ghz @ 1.424v is stable, let LinX run for a few more hours with "all" memory checked as well, then I just continued working with
my 3D/Maya work and rendering all day, works great! Once I replace the original noctua fans for a higher CFM ones I´ll see what it takes for 5Ghz usage, it would be a dream fulfilled

[flesheatinvirus]

Nice chip, 5G should be no problem with good cooling. These Sandys are a serious bang for the buck and certainly better then what I expected. Good luck and enjoy the powa.

[papatsonis]

i find pretty annoying the fact that you CANT use the power saving features, which reduce vcore when idling (16x multi) if you set vcore on "fixed mode" (at least on my asrock).Unless you set it on offset mode, you get a straight fixed VID for all multies.. The problem rely in using different VID for different workloads (1c, 2c, etc) and in my case for example, for 4200 1c load requests 1.2710 VID, but 4c/8t requires 1.3461 (at least that is reported in coretemp/realtemp367). If i set for example offset -0.100 LLC3 in uefi i might be stable in heavy workload utilizing 4 cores..(1.199 vcore needed for prime 26.5 ALL threads/core stability) but if have a high single thread load (e.g. spi,prime95-1thread ), the 1.2710-0.1 => 1.1710.. with LLC3 becomes, 1.13-1.15... => "kaboom"... the classic x124 BSOD in very short time.. .I don't know if this can be addressed via a uefi update, or have to trade off , with a bit higher vcore in 4c/8t workloads to compensate for the lower vid in low core/thread-count loads. For the time being, i set it to have a bit higher load vcore (1.208) with different LLC lvl(5) and offset setting, that gives 1.176 vcore in 1core load, which seems stable so far (pain in the ass of course to validate this setting for all 4 cores...). I think the most "simple" solution could be if asrock, for example,(and i suspect all manufacturer's implementation suffers from this offset behavior + fixed vcore not lowering in idle state) could add code that uses fixed vcore in all workloads , and using "request VID" only in idle state, to benefit from stable vcore when overclocked+load and cool and quiet operation when cpu idles.
p.s.> of course someone will point out that "why not using higher vcore? adjusting the offset to meet the minimum required for 1c loads, eventhough you get higher in 4c/8t?" . In my case that means i may use 1.24-1.25 vcore in 8t loads.. which i just find it waste of watts, especially when the cpu has a 100% load.

p.s.2> assuming the fact the the MHz/requestVID slope actually lowers as MHZ increases, the real needed Vcore, may come close to request VID, and posse no problem to use offset mode, but that may be effective in >46x-47x settings, and doesn't apply to mild/conservative overclocks that want to retain cool&quiet operation when idling

[danielkza]

@papatsonis:

I have that exact problem on my P8P67 PRO: it seems to be the way offset mode works, and it happens not to play well with high OCs. At stock speeds a 0.05V-0.1V Vcore difference between single and multiple-thread Turbo is perfectly fine, but at 4.5GHz and over it causes major instability. I haven't found a good solution so far, but trying multiple combinations of LLC, Offset, Additional Turbo Voltage, and C1/C3/C6 might help you get better results.

[PolRoger]

@papatsonis ^^^

I've observed aspects of what I think you are describing as well and for the most part run my daily and even some bench o.c. with offset vcore with CIE and all the powerstates enabled. On my first 2600k which was not that strong a sample I found that running vcore offset seemed to help with stabilizing my o.c. Maybe we will see this addressed through future BIOS updates? I still use fixed vcore from time to time but usually for high multi benching.

[papatsonis]

@papatsonis:

I have that exact problem on my P8P67 PRO: it seems to be the way offset mode works, and it happens not to play well with high OCs. At stock speeds a 0.05V-0.1V Vcore difference between single and multiple-thread Turbo is perfectly fine, but at 4.5GHz and over it causes major instability. I haven't found a good solution so far, but trying multiple combinations of LLC, Offset, Additional Turbo Voltage, and C1/C3/C6 might help you get better results.

yea, trying different LLC, offset might help (actually might have a setting -priming 1 core right now to check- with that lower vcore to see if it is stable). Additional Turbo Voltage, how does it work exactly? is a different offset only in 1core loads? (because when o/c i actually see no turbo bin added, like being disabled) if so, it will be the solution to our problem

[batmang]

[Chickenman]

I got mine a couple days ago - I7 2600K Batch# L048B285

1.140 in bios for 4Ghz

1.380 in Bios for 5Ghz

Stock cooler = ran Spi and 3dmark too hot to do much else, have run spi at 5.2 but crashed as I am too soft on voltage

Looking at an H50/70 I think, have to wait 'til next payday >.>

[Falkentyne]

What's the voltage at load?

That's the important part.
Because if you're at 1.380v BIOS and it's dropping to 1.30v load, at 5 ghz, and stable, then you have the best 2600k in the world.

We need the load voltages If CPU-Z won't read them properly, use hwmonitor or HWinfo32.