Guys, I'm in need of your wisdom.. 2600k and Z77 OCF board overclocking...

[John Naylor]

My son's box has been running since 2011 at 4.8 Ghz (1440p, 144 Hz, IPS) .... well enough that w/ a 1070 he's had no urge to upgrade anything.

As for OCing

http://www.overclock.net/t/1198504/...-guide-sandy-bridge-ivy-bridge-asrock-edition
http://www.overclock.net/t/908782/sandy-bridge-overclocking-guide-ocn-members-only

As I recall initially about 2% of SB's would hit 5 GHz ... went higher with later steppings

As far as Kaby Lake goes ...

Average OC5.03
Median OC5.00
Average Vcore1.36
Median Vcore1.36

Can't paste in link ... Do a web search on Kaby lake Overclocking Guide overclock.net

 

[EarthDog]

As I recall initially about 2% of SB's would hit 5 GHz ... went higher with later steppings

LOL, How lucky am I to have 10 that did it out of hte first batch if they are 2%................LOL

 

[phill]

My son's box has been running since 2011 at 4.8 Ghz (1440p, 144 Hz, IPS) .... well enough that w/ a 1070 he's had no urge to upgrade anything.

As for OCing

http://www.overclock.net/t/1198504/...-guide-sandy-bridge-ivy-bridge-asrock-edition
http://www.overclock.net/t/908782/sandy-bridge-overclocking-guide-ocn-members-only

As I recall initially about 2% of SB's would hit 5 GHz ... went higher with later steppings

As far as Kaby Lake goes ...

Average OC5.03
Median OC5.00
Average Vcore1.36
Median Vcore1.36

Can't paste in link ... Do a web search on Kaby lake Overclocking Guide overclock.net

I love the CPU, think it's one of the best out there. The only reason I've swapped from my 920 D0 was the sheer power needed for it and I was wanting to have a change of hardware and when I got offered the chance of a Z77 OCF board, I jumped at it, then got back my 2600k chip, I was even more happy
They are solid CPU's and I think will still work wonders for ages to come I run a 1070 with mine across triple 1080P screens, I think it's a bit of a push in some games but otherwise, it's perfect for what I use. It would be nice to be able to upgrade to a 1080 Ti for the extra grunt for the triple screens but how crazy the prices are at the moment and with my sheer lack of spare cash, I'm not in a rush

LOL, How lucky am I to have 10 that did it out of hte first batch if they are 2%................LOL

Well no wonder all of the good ones can't be found, you had them!! lol I might consider a 2700k at some point but having had a look on Ebay for one, at £130, I'll take a reign check

 

[EarthDog]

That 2% is horsecrap really was my point there.

Though SB is still a viable CPU, it does hold back some games and high-end GPUs already....

 

[Sasqui]

That 2% is horsecrap really was my point there. Though SB is still a viable CPU, it does hold back some games and high-end GPUs already....

At GHz-GHz yeah, but if you can get 5Ghz out of a $125 chip with 8 threads, no contest.

Well no wonder all of the good ones can't be found, you had them!! lol I might consider a 2700k at some point but having had a look on Ebay for one, at £130, I'll take a reign check

Seriously, if you're overclocking, the 2700k and the 2600k can be considered equal. Hell, no doubt you'd find that they are equal on average for OC'ing ability.

 

[EarthDog]

5GHz and 5GHz @ -30% IPC................. In the words of Led Zepplin... "The Song Remains the Same"*.


* For the most part. Obviously an overclock will alleviate some of that glass ceiling, but, not all, not compared to modern processors able to do the same thing.

 

[Sasqui]

-30% IPC

Not arguing with your point, but where do you get that figure from?

 

[FireFox]

Generally when the multiplier is locked because your CPU doesn't support overclocking.

Weird, i used to have my 2600 at 4.5GHz/5.0GHz

 

[EarthDog]

Not arguing with your point, but where do you get that figure from?

An Anandtech article... I believe the Skylake review is where it says that value.

Weird, i used to have my 2600 at 4.5GHz/5.0GHz

You can use the BCLK to overclock a few along with any turbo multipliers it may have. More accurately, it does not have an UNLOCKED multiplier.

 

[revin]

Yep. Most of these could do 5 ghz on high end air. But if you are really at 4.8 and 1.4v and that is the lowest possible voltage, you have a dud.

Yep Mine running Stock Voltage 1.24vid with a small tweak at 5.0-5.2 24/7 on an Old scythe Ninja for last several years. @EarthDog has seen it and can verify, it was kinda weird but it worked out ! Same about the ram on my Z68, No way to get over 1900[bclk] but it was as much bandwidth as most 2133/some 2400
It just depends on how that BIOS version was worked out from engineering for what to work best.
But that said I moved it to a Z77 couple weeks ago, and I\m stuck at 4.8 atm, but have other issue to deal with first. For sure it's because of the "then" last BIOS for Z77, I have to go to an older, because I cant get my Ram unlocked from 1600. Same Everything as in my spec, but at least I still got a Good OC.
If you had a BIOS update try going back to see if that may help/

 

[cadaveca]

LOL, How lucky am I to have 10 that did it out of hte first batch if they are 2%................LOL

8 CPUs for me, not one did 5 GHz. Actually, scrap that; one did. not with 1.35V tho. Worst CPU did 4.2 only, 4.3 and 4.4, 4.5, 4.6, 4.7, 4.7

Nearly every one of those was retail. As you may surmise, the ES did 5 GHz, yep. But very few multis above that worked until BIOS updates... 2700K improved this a fair bit for me.

 

[EarthDog]

Sorry about your luck, Dave. These were duds at less than 5Ghz...and I am talking retail. There really isn't much getting around that.

I remember binning myself and many many others at the time. While it may not be a majority, it sure as hell wasn't 2% either.


I had one that did 5.4 GHz with a bit of BCLK (53x IIRC was the max multi for that sample...)

 

[jboydgolfer]

I just upgraded from an H80i v2 to an H100i V2 just the other day and my temps from my 6core CPU went from 100*C (yes I know hence the upgrade) doing stress testing and crunching down to 65-70*C. Idle temps went from 35*C to around 25-28*C

i agree, i have the H110i GTX and my temps have NEVER even reached 40C running P95 thats (IMO) the definition of a kick a$$ H2O cooler.

 

[EarthDog]

Run the latest version and let it run for at least 30 mins , lol not 3, so you can actually saturate the AIO.

H110i I just a couple of C better than high end air. Its a solid cooler though, no doubt.

 

[jboydgolfer]

Run the latest version and let it run for at least 30 mins , lol not 3, so you can actually saturate the AIO.

H110i I just a couple of C better than high end air. Its a solid cooler though, no doubt.

That was about 20 minutes. I wasn't aware there is a newer version. I'll download it and give it a run and see if I can break the 40 Celsius. Ill post back when done.

 

[cadaveca]

Sorry about your luck, Dave. These were duds at less than 5Ghz...and I am talking retail. There really isn't much getting around that.

I remember binning myself and many many others at the time. While it may not be a majority, it sure as hell wasn't 2% either.


I had one that did 5.4 GHz with a bit of BCLK (53x IIRC was the max multi for that sample...)

At the time, XS was still popular and most OC teams were still posting there as HWBot was still new, and even there 5 GHz was rare (I was posting more scores for XS than anyone at the time). It's great if you got many good chips, but the average was only 4.5 GHz as compiled from a few sites by XS members.

H110i I just a couple of C better than high end air. Its a solid cooler though, no doubt.

Barely even that good, really. I mean, for the dollar, it's not good at all.

 

[EarthDog]

Uhh huh...I was there too... well before those days even.. the good days.

Edit: what is funny... our overclocking guide starts at 4.5ghz 1.25v.. lol!

Yes, i was talking performance...not cost.

 

[cadaveca]

Uhh huh...I was there too... well before those days even.. the good days.

Edit: what is funny... our overclocking guide starts at 4.5ghz 1.25v.. lol!

Yeah, I was posting reviews with 4.5 GHz @ 1.265. That was the good retail chip. The thing is, voltage didn't always matter, since some CPUs simply didn't like that multi. Even 49 was hard on some CPUs, who were well within both voltage and thermal limits.

Anyway, that 2% number came from Francois Peidnol, who was in charge of such things at Intel at the time (I think he was lead designer before he left last year? He posted as Drwho). ASUS's own internal testing of CPUs was similar as well, although I think the numbers were slightly higher. It did improve over time, for sure, but I don't remember the numbers picking up @ siliconlottery then either. 2700K @ 5 GHz, sure.

 

[EarthDog]

I recall those hard multiplier ends. We could bin chips in two reboots, lol!

 

[phill]

@EarthDog did you used to bench for HWBot?

 

[Mussels]

got a friend with the same problem on a 3570k and 2500k, all these Z77 boards he gets from ebay seem to be locked to a max of 40x, for 4ghz despite definitely being K chips

 

[Bones]

@EarthDog did you used to bench for HWBot?

He still does..... I also do that at the bot.

@Mussels:
That's kinda weird - I'm sure it's nothing a BIOS flash coudn't fix with them.

 

[phill]

Ah that would explain it then

I used to but as soon as I got my 5960X and thought for a second about how much it cost me, I thought, hang on and stopped lol Was costing me a fortune and I wasn't getting anything much from it... Now it's gaming and Cancer Crunching Seems to be a little more useful way to spend my time

got a friend with the same problem on a 3570k and 2500k, all these Z77 boards he gets from ebay seem to be locked to a max of 40x, for 4ghz despite definitely being K chips

I found that a bios reset sorted my issue out, no matter how many times I re loaded profiles it never worked. Turn PC off at the PSU, move the two pin adapter (thing) and leave it there for about 30 seconds, should reset the board back to stock. Then just up the multi to 41 and see if it reports back all ok. That's literally all I did....

 

[brandonwh64]

My 2600K ran at 4.5Ghz 1.275v for years until the motherboard started to flake. All I did was set multiplier and offset voltage, I left everything else on auto. Never had stability issues that is until like I had mentioned, the motherboard started doing weird things.

 

[revin]

got a friend with the same problem on a 3570k and 2500k, all these Z77 boards he gets from ebay seem to be locked to a max of 40x, for 4ghz despite definitely being K chips

If they have the visual bios maybe they need to go to the classic mode, that's where I have to go to get over 4.5. I have a DZ77GA-70 board, and although I'm having a couple issues, I have determined it to be related to the BIOS that was last issued for it.

TBH I'm confused about the "rarity of the 2600K that didn't run 5Ghz." I was seeing here, and lots of other sites that it was commonplace.
By the few month's after release that I got mine I know I was told my many that my Intel board and probably wouldn't let it get there, and it was a little trial and error but it was in the end so simple for it to do it. I just assumed that 4.8-5.2 was the spot most all them would run with good cooling.
I was kinda shocked when I been told that it was indeed rare for me to be "Just on air" and with an older cooler at that.
That said, it was a combination of the right BIOS with my board to do it.
Also as you discovered @cadaveca the engineers at Intel knew they hit a wall with Ram speed over 1866 so they over compensated the 1866 to scream with tight timings and higher bandwidth.
I never thought that I was just lucky on the high clock speed, just took the right stuff to fall into place.
@phill Look at the power section and try these for starters. This simple approach was what I ended up with.