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

[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.

I checked the Additional Turbo Voltage, and at least in Asrock's implementation, adds the given offset to every VID in turbo state (Max multi), so the difference between the voltage for 1c load and 4c/8t load still exists. The good (not relevant with Additional turbo voltage) is that the cpu due to thermal envelope(??) is stable in 1c loads with less vcore than 4c/8t so i might find a good trade-off with minimal overvolting in the latter setting.

[Chickenman]

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.

It drops down to 1.362 ish and is not 100% stable under full load, I am going to wait until I get a cooler.



I know it's not full load but I aint toasting this chip just yet

For reference - these are temps on stock cooler at 1.140/4ghz (no real vdroop at this voltage) you can see why I am reluctant to push anything just yet.

[NoGuru]

Kinda dumb to have the results scattered throughout the thread instead of on the first post.

[ewitte]

@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.

I gave up on offset (at least for the moment). It did allow me to idle at about 75W even with a 560Ti. With manual voltage its 95W (4.4Ghz 1.265v). Mind you when I had the 920, GTX295 and watercooling idle was about 285W so still a major improvement.

[batmang]

Kinda dumb to have the results scattered throughout the thread instead of on the first post.

Agreed.

[sleewok]

2600k Batch # 3103B317
Asus P8P67 Pro
8 GB RAM

I have my system running solid @ 4.8GHz
4+ hours of LinX rock solid, highest temp was 77C

Voltage is between 1.4 - 1.408 on load

[cowie]

sry that this is not on topic but

man how many chips does it take to find a 55x+ multi?

I'v tried two 2600k and two 2500k's the first one is 54x the others were 2(1 each)52x and 1 2500k 53x.

anyone binn these chips and sell 55x+multi anywheres?

[PolRoger]

56x(+) chips are rare. Especially those few that are scattered around HWbot and the forums that are able to do 57x, 58x and even 59x.

It seems most people are holding on to their "cherry" clockers but I've seen some 54x(+) samples put up for sale in the classifieds.

[flesheatinvirus]

You are right about that. My L040B208 can do 56 no problem and 5G at 1.38v so its a keeper. 55 and beyond is considered golden.

[cowie]

argh i'd be going thruogh chips left and right to find 55x+ then huh? jeez...then if i do find one forsale i hope they kiss me first..

[flesheatinvirus]

Its tough right now to find a gem though some of the new C batch chips are looking promising. It is still a crap shoot obtaining a 55+ Sandy Bridge chip but when you get one it is simply awesome.

[l0ud_sil3nc3]

I bought a 55x chip and it was worth every penny, not to mention it is a c batch, just gotta keep playing the G A M E

[Phaseshift]

this is kind of a n00b question, what's the proper way to properly find the max multiplier of a chip specifically the 2500k/2600k? Is this process called binning?

[l0ud_sil3nc3]

taken from hwbot per massman. . .


"Thanks for the input guys!



Binning Sandy Bridge is extremely easy.

- use HS fan with easy mounting
- set Vcore to 1.55V
- disable HT and 2 cores (to not make it overheat with crappy HSF)
- increase multiplier

You just need to see the windows OS options, not actually boot into windows. If your CPU can show the different OS options, stability will just be function of Vcore and temperature. If it doesn't show the OS options, you will never get it stable anyways, so you might as well ditch the CPU.

Usually, it takes about 5 minutes to see if the CPU is good or not.

With some CPUs, you do have the issue that some multiplier is better than the other for stability. For instance, my current CPU can boot at 51x MAX (~ 5145MHz). When trying to run near this max speed, I have to use 49x instead of 50x multiplier because it's a lot more stable.

But, that's something you don't need to test. With BCLK adjustments, you'll never get 5200MHz going or so. Multiplier binning is the best way."

[Nugz]

1.55v really? My VID stock is 1.25v for this 2500K and I have 45nm cpus with 1.15v and 1.20v. I can get to x52 post in window @ 1.54v with 4 cores. Thats the max I have tryed, on water cooled also.

Wonder if I should try more?

[Alex-Ro]

argh i'd be going thruogh chips left and right to find 55x+ then huh? jeez...then if i do find one forsale i hope they kiss me first..

10-15 pieces should be enough to find 5500-5600 chips.But finding 5700+ chips is incredibly hard,you should test dozens and dozens of chips.

[cowie]

15? i am lucky i can go to microcenter to get them cheap but i am running out of people to buy them for me.

to add something to thread
sry if i derailed it with my questions

lastest 2500K chips i have tried
L041C123
53X 5333 wall no matter what multi and base clock

L042B291
52X 5213 wall no matter what multi or base clock


2600k
L044A892
54X 5447 max air ,max 5469 dice no multi change on dice.

the 2500k's are on ebay now if they sell i will try more,i want c batch to try.

[Dumo]

Got more chip to bin from local MC



The one in the back is probly another 57X. Lol

[PolRoger]

Got more chip to bin from local MC

Sorry to read about the troubles with your "special" L042B243 chip. Good luck with the new ones.

I think I'm going to take a "bin" break...

[jcniest5]

taken from hwbot per massman. . .


"Thanks for the input guys!



Binning Sandy Bridge is extremely easy.

- use HS fan with easy mounting
- set Vcore to 1.55V
- disable HT and 2 cores (to not make it overheat with crappy HSF)
- increase multiplier

You just need to see the windows OS options, not actually boot into windows. If your CPU can show the different OS options, stability will just be function of Vcore and temperature. If it doesn't show the OS options, you will never get it stable anyways, so you might as well ditch the CPU.

Usually, it takes about 5 minutes to see if the CPU is good or not.

With some CPUs, you do have the issue that some multiplier is better than the other for stability. For instance, my current CPU can boot at 51x MAX (~ 5145MHz). When trying to run near this max speed, I have to use 49x instead of 50x multiplier because it's a lot more stable.

But, that's something you don't need to test. With BCLK adjustments, you'll never get 5200MHz going or so. Multiplier binning is the best way."

Maybe I'm just confused, but what exactly is the "Windows Options?" He meant the Boot options? He meant the Windows logo?

[Dumo]

Sorry to read about the troubles with your "special" L042B243 chip. Good luck with the new ones.

I think I'm going to take a "bin" break...

Thanks PR

Well, it was fun when it last

Like everybody else here, gotta search it again

[Dumo]

Maybe I'm just confused, but what exactly is the "Windows Options?" He meant the Boot options? He meant the Windows logo?

Yep, windows logo instead of black screen with blinking cursor

[jcniest5]

Got more chip to bin from local MC



The one in the back is probly another 57X. Lol

What is the batch # of each? Did you buy them all at the same time or did you have different people buying them individually?

[crossg]

Thanks PR

Well, it was fun when it last

Like everybody else here, gotta search it again

Sorry to here about your chip and condensation Dumo. Hopefully you'll find a replacement quickly. Think 58X.

[Dumo]

What is the batch # of each? Did you buy them all at the same time or did you have different people buying them individually?

Bought 5 pcs. today JC. Micro Centers in NYC metro never asked why and what for all those cpus