I can boot up high >105 BCLK (with UD7) sometimes after restarted from oc bench, but most of the time it will reset back to 34X and C1 @ boot up.
Imo, its not worth the headache of corrupted bios or os, just use easy tune 6...same result anyway
Printable View
my new #L050A853 vid 1,2450
boots x49 no internal PLL and prime stable on that
http://img193.imageshack.us/img193/8990/prime3s.jpg
http://img156.imageshack.us/img156/9540/p1080777.jpg
x50 prime stable
http://img30.imageshack.us/img30/663...33c7prime2.jpg
x52+
http://img810.imageshack.us/img810/5738/5400spi1m1.png
http://img4.imageshack.us/img4/4769/5300spi32.png
http://img820.imageshack.us/img820/3...3c7vantage.png
cheers to all :up:
Sergio
Yep, 105.00 maxed from bios with UD7 C1 reboots...sometimes 2X or more...
Bios clock 53X105 BCLK enabled
PLL Enabled, other settings disabled
Ram performance Extreme, 7-10-7-25, CL1, I/O lat.1, all subs auto
LLC Level 2, Vcore 1.575V, Dram 1.72V
Use Easy Tune 6 in Windows
http://img138.imageshack.us/img138/1...enshot102f.png
But, BCLK 100.00 bios guaranteed boot up to windows:)
http://img202.imageshack.us/img202/8...enshot115u.png
http://img62.imageshack.us/img62/8849/screenshot114.png
Has anyone proven or disproven, that the best way to get to 5 ghz is to get a low vid (default 34x100 like 1.21-1.23 VID) CPU? And/or, that a low vid high temp CPU possibly responds better to voltage than a low temp CPU? (thus making it a screamer on water?). And all high VID chips (1.25+ VID @ stock speeds) should be avoided?
#L040B671
5389.2Mhz
X54 (1.56v)
http://img814.imageshack.us/img814/9727/54x32m.jpg
some preliminary results from my newly built rig, havent tried higher till now, but saw a tangible effect of reducing PLL in cpu stability. (CPU PLL in this ss 1.709 in bios -from 1.832 default), with default pll had bsods in this vcore.
http://img222.imageshack.us/img222/1...reliminary.png
Anyone know if Newegg is shipping the "C" batches yet of either the 2600k or 2500k?
If not which batches are comming from the egg at this point?
thanks in advance
Why do you want a "C" batch? They're not really any better.
What you want is a "3" series costa rica cpu :)
Haven't seen many results so far, but mine was doing 5 ghz at 1.404v load.
Kevin, I wish I could help, but I dont even know what to do :(
Even if I bought the CPU for you and had you pay me later, you might wind up getting the malay one instead cuz newegg will NEVER let you choose the batch :( I buy from newegg cuz I get my things next day from UPS ground, since I only live about 20 miles from their warehouse....
And didn't Tankguys turn sour and go under? I remember back during the core 2 days, tankguys was all the rage...
And Mwave...I could catch a bus to Mwave (When I lived in Walnut, which is actually 1 city away from here, I could walk to Mwave in 10 minutes or bike there in 2 minutes), but I'm afraid of the dirty look they will give me if I say "i want to buy a costa rica i7-2600k. And me being black doesn't help one bit, if you're in an asian owned store...
really the only way to get a batch is to go to b&m store and pick through them yourself, or buy a known good clocker from online that has been tested. Sure you usually pay a bit more for a 5.5+ but usually the chances of finding one that good or better require quite a bit of binning.
@ Falkentyne...Its pure luck Fal, even peeps that have an access to bin 100s of 2600K will be lucky to find a single 57X chip.
I try to avoid being near local Micro Center, because I can't resist to gamble and buy another 2600K.......Then look stupid watching it stuck at cursor at 56X:D
12 hours Prime Blend Test
http://i52.tinypic.com/5umer8.jpg
5000mhz, 1.45v, HyperX Blu 8gb 1600mhz Cas 9, Air (Venomous X Black), Batch# L041B800
I'm sorry, but those curves and that bun are more enticing than that screenshot.
:shocked:
what's the best batch for an i7 2600k? I kinda want to upgrade to an i7 lol
Anyone have luck with offset mode? Even though I got the vcore where I wanted to it would occasionally lock up when changing speeds. I get insane idle wattage off of that. Even with a decent video card it clocked about 75W 4.2Ghz 1.25v on my killowatt. After testing with static vcore though its stable at this
P8P67
2600K @ 4.4Ghz 1.25v
Hyper 212+
maxes out at about 75C under prime
L050A853
This will idle at about 100W. Still pretty good :) It will go higher but then the temps get close to or over 80C.
yay, I now have an ASUS P8P67-M Pro with an i7 2600k and a Gigabyte P67 UD3 with an i5 2500k :p
Don't place all your chips on the C batch. I picked up my 4th i5 2500k on vacation near a Microcenter and grabbed the only C batch they had.
Unfortunately it is just average at best. 12 hours Prime95 stable for 4.6ghz is 1.36v.
I agree, its hit or miss without a ton of chips.
Got 2 2600Ks from Micro Center..
Not bother with air, put both under SS
L038A660 (probly their old inventory) LLC2 Vcore 1.575 Bios
Max... It can boot up @ 54X 100BCLK with VPLL @ 1.9, but can't go >100BCLK
http://img51.imageshack.us/img51/266...enshot123p.png
L041C108 LLC2 Vcore 1.54 Bios
Max...
http://img852.imageshack.us/img852/8...eenshot122.png
Dumo,
Can you do me a favor and tell me the default VID (at x34) for both cpu's?
I want to see if the VID relates to the voltages you are using at the max overclocks...
And another random question:
Does the lower VID chip run hotter than the higher VID chip (if the voltages are the same fixed voltage)?
(you can just test that right in the bios with both chips at 1.25v fixed).
Ok thank you Dumo.
I notice that everyone elses batch number starts with L040 or a similar L0 number.
The batch number on my 2500K is 3101A127 :shrug:
Seems weird.
Nothing weird. It's Costa Rica plant. Not common yet.
wait which batch # is the costa rica plant?
3XXX instead of LXXX
L045B021 53X max
L050A853 54X max
http://img3.imageshack.us/img3/8336/screenshot045qi.jpg
See the "c" batches are better :/ hahah and the "d" will even be better whahaha :)
so should we be looking for the costa rica ones?
Same batch L038A660 Here. boots to 56x. Haven't really played with the block. Just goes to confirm what you said earlier, it's random and theres no way to tell by batch.:)
for those of you with the 2600k do you guys leave HT on?
my HT is always on,no reason to disable it imho
my batch is L101B624
havent oc'ed yet but will do so shortly
I have 2 questions.
Would you consider 1.45-1.46 safe 24/7 volts on a H50?
and
What is a max safe PLL voltage? 1.85? is that safe?
Lower PLL voltage mate, I don't think you need it that high unless you are doing +5Ghze... Voltages for the CPU IF temps are good are no worry... Only thing you have to keep in back of the mind is : will the CPU and board keep up with the required power delivery ?
Seems like an overkill for the 24/7..
I keep mine at 4.5GHz, with max volt at 1.34. It peaks down and idles between 25-30C respectively. Hits under 20C during the night. Power saving features are amazing, though.
I can do 4.6GHz easily, but need tons of more voltage and seems like 100mhz isn't going to benefit anything.
The reason I ask is I think my 2500k can do 5.1ghz with 1.45 - 1.46 volts. And that was with pll at 1.85, what is the pll voltage? My temps remained great. Lol I can do 4.8 at 1.38 but I want 5ghz.
finally the tests seem to end.. as i have multi limit 47x with PLL overvoltage disable
http://img857.imageshack.us/img857/4...xtrapolate.png
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)
It seems I'm the unluckiest person on the OCing community. I have gone through 4 2600Ks and none of them goes past the 5Ghz stable. I can get suicidal screenshots, but that's it. It seems like almost everyone (except me) can get CPU that goes past the 5Ghz w/o even trying. That's how it goes, I'm probably the unluckiest person in the world, nothing goes right for me, including in real life, not just PC stuffs.
You'd be surprised to know that some people here have to go through a lot of bad :banana::banana::banana::banana: 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?
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.
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:D
Still if for some reason I have to go to Micro Center nowadays.....then most likely I will take home a 2600K:)
Yes, they were/are all L04xxxxxxx. :mad:
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... :shrug:
Economy is bad...hope we can all survive through this hard time together.
L050A853 under SS again...a bit more BCLK up then max..
http://img858.imageshack.us/img858/4...enshot020b.png
Lower Vcore LLC1
http://img684.imageshack.us/img684/1...enshot022u.png
http://img864.imageshack.us/img864/9...enshot023x.png
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:shakes:
I decided to just pay the premium and buy a 5.5 chip and then continue playing the G A M E:yepp:
keep your head up, sell off your current cpu and grab another one . . . or two:up:
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? :confused:
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.
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
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.
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:yepp: and that includes the Houston store and both of the California stores:shrug:
maybe slip a one of the Microcenter guys a $20:D
So I just got my setup 2-3 days ago and testing out, I wouldŽve 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 IŽll see what it takes for 5Ghz usage, it would be a dream fulfilled :)
http://dl.dropbox.com/u/12223509/linx_4.9_u.jpg
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.:D
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 :(
@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.
@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?:shrug: I still use fixed vcore from time to time but usually for high multi benching.
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 :)
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 :rolleyes:
Looking at an H50/70 I think, have to wait 'til next payday >.>
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.
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.
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.
http://farm6.static.flickr.com/5021/...b5c2e7da_b.jpg
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.
http://farm6.static.flickr.com/5026/...7fcdfd74_b.jpg
Kinda dumb to have the results scattered throughout the thread instead of on the first post.
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
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?
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.
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.
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..
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.
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:up:
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?
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."
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?
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.
Got more chip to bin from local MC
http://img577.imageshack.us/img577/2613/58052933.jpg
The one in the back is probly another 57X. Lol
http://img231.imageshack.us/img231/4...enshot059p.jpg