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

[OC Nub]

Tying 2550k's now. No threads so Ill pot it here.

Batch #L115C216

Tried 2 so far both from same batch, one 55x and one 56x, 56x cpu needed a ton of vcore and ran hot. This is the second one, http://valid.canardpc.com/show_oc.php?id=2276446

http://valid.canardpc.com/show_oc.php?id=2276446

[jcniest5]

I'm testing a 2550K L147C258 and it OCs like crap. Highest it can go stable is 5.1 @1.525v!!! I'm just never lucky.

[Dialtone]

2600k Batch L145B070 hit 5ghz

Still testing boots @ 5.3ghz but not stable. I Need to tweak more

[moorhen2]

My 2600k will do 55x multiplier,and gets to 5.5ghz with some bclk,but wont budge beyond this,no matter how much voltage.Batch number 3134A867

http://valid.canardpc.com/show_oc.php?id=2277614

http://valid.canardpc.com/show_oc.php?id=2277469

[95blackz26]

trying my 2550k now.
got 46 at 1.33v

Batch # L114C089

http://valid.canardpc.com/show_oc.php?id=2282992

[LiquidReactor]

Anyone here buy any 2600k or 2700k at Rockville, MD, Microcenter?

[OCX600RR]

L041C123 2500K
x56 max so far, logged into Windows but got a BSOD before I could get a screenshot. That was at 1.615v on a Corsair H60 with the computer outside (outside temp 15*C). I was too wussy to try any higher vCore but I'm pretty sure if I got into Windows and then BSOD'd that would make this a x56 chip correct? I did manage to get this though which was better than my x54 max I got back in July last year with the same chip!

[Martin.v.r]

I7 2600K Batch 314B779 test to x50 1.425v x53 1.488v max multi is x56 1.635v
here whit x50
cpu 3.jpg

updat x51 1.425v wprime1024

cpu 4.jpg

[OC Nub]

2550k Batch #L115C216

Finally got some better cooling, bought a Single Stage unit built by runmc. This chip runs very hot, and needs a ton of vcore. My 24/7 install of w7, and the wrong version of wprime.

My first try on a the new unit, I feel like a kid again

[Dumo]

2550k Batch #L115C216

Finally got some better cooling, bought a Single Stage unit built by runmc. This chip runs very hot, and needs a ton of vcore. My 24/7 install of w7, and the wrong version of wprime.

My first try on a the new unit, I feel like a kid again

Awesome SS there OC
With this chip you can put GTX 580 and go '01 or go Vantage with 3930K+7970

[OC Nub]

Thanks!

Next I need to get up the nerve to try it on the R4E and 3930k.

[Demo]

Some of you folks are unhappy unable to hit 5.0Ghz with 1.4v, mine requires 1.390v for 4.5Ghz and 1.452v for 4.8Ghz... which is really pathetic!

I've never really played around the PLL voltage its always been in auto, how would I know if I need to decrease or increase it ?

[moorhen2]

Some of you folks are unhappy unable to hit 5.0Ghz with 1.4v, mine requires 1.390v for 4.5Ghz and 1.452v for 4.8Ghz... which is really pathetic!

I've never really played around the PLL voltage its always been in auto, how would I know if I need to decrease or increase it ?

I run my CPU PLL at 1.5500v,with complete stability,there are those that say running it lower than the default 1.8v can reduce the amount of vcore needed,and it helps reduce temps slightly. You could try starting at 1.8v,and work your way down until you cant boot,then it's just a case of fine tuning.

[Demo]

I run my CPU PLL at 1.5500v,with complete stability,there are those that say running it lower than the default 1.8v can reduce the amount of vcore needed,and it helps reduce temps slightly. You could try starting at 1.8v,and work your way down until you cant boot,then it's just a case of fine tuning.

So its only a matter of not being able to boot, if you can boot would that ensure stability ?

[moorhen2]

When you find the lowest PLL voltage that will boot,it's a matter of running some stress tests to fine tune,ie,you might be able to boot @ 1.500v,but being stable is not gauranteed,so you will need to fine tune until you are.

[rouvio]

2500K | #3204B387
purchased yesterday at Microcenter to practice OC on the M5G and getting to know the board.

Specs:

• I5 2500K
• Maximus V Gene
• 2x4GB Samsung 30nm kit
• Corsair H100
• Antec Signature 850W

So far the CPU was doing great.
After few fine-tuning I reached 5.4GHz on water, and this speed *IS* as stable as a rock.
I mean really. temps under heavy load were around 75-79c, and it passed all the 3Dmarks with 560Ti clocked to 1GHz/2500.

in the pics the CPU V is 1.6, but I was able to get about the same results with 1.53V.




Now after I reached this stable speed the CPU seems to hit a wall.
I tried everything that I know - blasted voltage, minimized voltage, underclocked, tried a lot of mem timings, lowered mem to the lowest and to the default, and still - the system can not go over 5.4 not in BCLK or in multipliers.

What am I doing wrong..
what am I missing.

I see a lot of people doing X55 and X56 on the BCLK and benching with no problem.

[NoGuru]

Looks like that is the limit for your chip.

[Leeghoofd]

Welcome to SB hell: it's the CPU... hello IB

[LagunaX]

Yup that's it...most duds happen to be the i5-25XX's.
2600k's are usually better but that batch from that MicroCenter $199 sale was pretty P.O.S. silicon.
2700k's are highly binned enuf not to be a dud but mediocre to great.

For regular moderate overclocking for 24/7 IB is the way to go - 4.5-4.6ghz easy overclock on air, up to 4.7-4.8ghz before you start cooking eggs and bacon.

[95blackz26]

When you find the lowest PLL voltage that will boot,it's a matter of running some stress tests to fine tune,ie,you might be able to boot @ 1.500v,but being stable is not gauranteed,so you will need to fine tune until you are.

i knocked my PLL voltage down to 1.5 from the 1.8 it defaulted at when i built it. haven't tried to go lower yet but when i get some more time i will.

this is with my p8z68

[LagunaX]

You can set it at 1.6v and try testing for stability.
Then later you can try 1.55 - it may or may not be too low for your system - for one of mine I could pass Prime with 1.6 but not 1.55v.

[andressergio]

2550k Batch #L115C216

Finally got some better cooling, bought a Single Stage unit built by runmc. This chip runs very hot, and needs a ton of vcore. My 24/7 install of w7, and the wrong version of wprime.

My first try on a the new unit, I feel like a kid again

grats my friend !!!

[andressergio]

this is my beloved x56 some screens i took ago i will retest as its a chip that can do very nice on water on low volts this screens are on 3 fan rad, now i have a 4 fan rad i will retest all soon







Uploaded with ImageShack.us

my old water cooler setup




my new one







Uploaded with ImageShack.us

[95blackz26]

You can set it at 1.6v and try testing for stability.
Then later you can try 1.55 - it may or may not be too low for your system - for one of mine I could pass Prime with 1.6 but not 1.55v.

i ran 10 passes of IBT through mine. gonna try lowering the vcore next

nice build

what's the thing holding your radiator off the back of the case.

[NoGuru]

That is a Koolance Rad box he has on the back. I got mine because of Andres.

Looks great Sergio!