I built a new FSX system a little while ago based on an i5 3570k which I wanted to overclock to 4.5-4.6Ghz (air cooling).

 

I can't even get it stable at 4.4.

 

My vCore is very high (1.365) and still not stable at 4.4. Is this normal? How far can I push the vCore before I start to cause problems?

 

I'm getting CTDs in FSX constantly now to the point where I can barely finish a single flight.

 

Would I be better off dropping down to 4.2-4.3 and lowering the vCore?

 

I thought originally I might have a memory issue as it's rated 2000Mhz but wouldn't even boot at that with XMP enabled so am running the memory at 1866 Mhz. But I have run 5 passes of Memcheck86+ and no errors found.

 

Any advice much appreciated.

You mean that you dont have à issiue when you cant booth at xmp have you test them at 2000 MHz ?

It can be à bad , CPU, bad MoBo, bad mems, bad Overclocker

Go back to 4.2 - 4.3 its safe

 

Made à pc with same MoBo CPU with Gskill 2133 and à Ninja cooler ( air) to My son this week,

4,5ghz , the clock 5 min then test ibt 10 pass and prime 3hours

 

Hasse

1.365 does not seem very high for OC. Perhaps because its a different chip it has a lower limit but my i2500K is very comfortable at 1.40.

Hi Martin,

 

Like you, I have a Gigabyte motherboard (not the same model though) and have successfully OC'd to 4.8 GHz using Gigabyte's latest version of their EasyTune 6 utility version vB12.1012.1. Previous versions resulted in instability but this latest version has so far given me a stable overclock and rather cool temperatures using an air cooler (Noctua NH-D14). According to RealTemp 3.70, CPU core temperatures never go beyond low 60s for Core 4 (CPU3) while the three other cores range in the mid 40s to mid 50s. I run an i7-2700K.

 

Sure beats fiddling with the motherboard settings.

 

JJ

Mark and JJ , you give him tips and tricks for SB and autoclock tools style overclocking ,

Its little differnt ballgame with temps voltages with the Ivy.

If Martin have experiance in overclocking i bet that he dont ask questions like this.

And take advises with risk to fry the CPU for your stupid advises

 

Hasse

Hasse,

 

Hmmm . . . very diplomatic! People like you take the fun right out of information sharing. And if you read my post carefully, that's exactly what the information offered was all about. I fail to understand how you could interpret the information offered as advice.

 

JJ

You almost need a lighter to actually "fry" a CPU nowadays.

Martin, what temps are you getting? Also, how are you overclocking? By an overclocking utility within Windows or via BIOS? We need more info as to how you are overclocking and data such as temps, before we can give you advise.

 

Mark and JJ , you give him tips and tricks for SB and autoclock tools style overclocking ,

Its little differnt ballgame with temps voltages with the Ivy.

If Martin have experiance in overclocking i bet that he dont ask questions like this.

And take advises with risk to fry the CPU for your stupid advises

 

Hasse

 

Wow Hasse, having a rough night there, buddy? There are excellent tools out there for overclocking IvyBridge CPUs for those that don't want to fiddle too much with BIOS settings and/or OC'ing their CPUs to extreme frequencies. Not every overclock has to be an extreme one and for what Martin is trying to achieve, he could very well achieve it via an overclocking utility if setup right. Nothing stupid about that.

your stupid advises

 

Easy Hasse...he was only commenting.

 

Kind regards,

You mean that you dont have à issiue when you cant booth at xmp have you test them at 2000 MHz ?

It can be à bad , CPU, bad MoBo, bad mems, bad Overclocker

Go back to 4.2 - 4.3 its safe

 

Made à pc with same MoBo CPU with Gskill 2133 and à Ninja cooler ( air) to My son this week,

4,5ghz , the clock 5 min then test ibt 10 pass and prime 3hours

 

Hasse

 

Hi Hasse

 

Not really sure what you're asking, sorry.

 

The RAM is quoted as 2000Mhz but when I enable XMP in the BIOS and set to 20 multiplier, it fails to boot. The highest I can get it is 18.66 multiplier.

 

Hi Martin,

 

Like you, I have a Gigabyte motherboard (not the same model though) and have successfully OC'd to 4.8 GHz using Gigabyte's latest version of their EasyTune 6 utility version vB12.1012.1. Previous versions resulted in instability but this latest version has so far given me a stable overclock and rather cool temperatures using an air cooler (Noctua NH-D14). According to RealTemp 3.70, CPU core temperatures never go beyond low 60s for Core 4 (CPU3) while the three other cores range in the mid 40s to mid 50s. I run an i7-2700K.

 

Sure beats fiddling with the motherboard settings.

 

JJ

 

Hi JJ

 

I'm using the same cooler as you, albeit with an Ivy Bridge processor which does run hotter. At my current set up temps get into the low 90s (hardly surprising with the amount of vcore I've had to put into it to get it stable) and I still get CTDs in FSX - so frustrating.

 

Martin, what temps are you getting? Also, how are you overclocking? By an overclocking utility within Windows or via BIOS? We need more info as to how you are overclocking and data such as temps, before we can give you advise.

 

Hi Efrain

 

Getting low 90s in prime, and overclocking via the BIOS. Base clock left alone, vCore gradually upped as I've upped the multiplier as and when boot failure/prime95 failure occurred. I think it only needed something like 1.28 at 4.2 then to get from there to 4.4 needed a massive crank up in the voltage. Did I just get unlucky with a voltage hungry CPU?

 

Question is, is it safe to go higher?

 

I pretty much only use the PC for FSX, and never more than a few hours a day, never 24/7

The RAM is quoted as 2000Mhz but when I enable XMP in the BIOS and set to 20 multiplier, it fails to boot. The highest I can get it is 18.66 multiplier.

You can only run it at 1866, not 2000. Same with mine. XMP should be on though.

 

At my current set up temps get into the low 90s (hardly surprising with the amount of vcore I've had to put into it to get it stable) and I still get CTDs in FSX - so frustrating.

What is your Speedstep Vcore? The Vcore the CPU is running when in idle through SS? Also what is your LLC? Are you Prime-stable?

You should try running as high possible LLC, but so that it doesn't crash when idle, which it will eventually if idle Vcore is too low...

 

Do you mean CTD or BSOD? If BSOD, then what code?

 

Oh and 90c is oooomph... waaay too high. I am not comfortable going over 80c.

You can only run it at 1866, not 2000. Same with mine. XMP should be on though.

 

Ahhh, OK didn't know that, that's helpful, thanks. Yes, I wasn't clear, XMP is enabled, but not at 20 multiplier, only 18.66.

 

What is your Speedstep Vcore? The Vcore the CPU is running when in idle through SS? Also what is your LLC? Are you Prime-stable?

You should try running as high possible LLC, but so that it doesn't crash when idle, which it will eventually if idle Vcore is too low...

 

Do you mean CTD or BSOD? If BSOD, then what code?

 

Oh and 90c is oooomph... waaay too high. I am not comfortable going over 80c.

 

I'll come back to you on the other settings, currently mid-flight (praying for no CTD!)

 

No BSOD's, I've eliminated them through stepping up the vcore ( I googled the codes and it said they meant to add more vcore )

 

I only get CTDs in FSX, and only lately the last few days, I'm wondering if I just had something temporary going on that was causing it. I'll let you know if I ever get to Eindhoven! It's stable through 5 hours of prime blend test.

 

I'll check my other settings soon and let you know.

 

Re the temps - I've been in FSX for an hour monitoring my temps and they haven't gotten over 64....

Ahhh I jinxed it :( CTD less than 30nm from arrival. SO frustrating.

 

My settings from my BIOS:

 

Vcore - 1.365v

Vtt - 1.070v

PLL - 1.800v

IMC - 0.925v

DRAM Voltage - 1.650v

 

Speedstep vcore - cannot find any reference to this in the BIOS menus. Might it be called something else?

LLC - Auto

 

Intel Turbo Boost Technology - Disabled

 

All power saving options are at default (enabled)

Why is Vcore in BIOS set to 1.365? In my opinion, it is much better to work with an offset. Harder to set up, have to go in and out of windows couple of times, but when you get the feeling, you'll know what to set... mine is set to +0.2 on high LLC.

 

Speedstep - no, the energy saving function is called Intel Speedstep and should be available in BIOS to set to Ena/Dis. It should be enabled. But when in windows idle, Speedstep with turn the chip back to 1600Mhz and lower Vcore. Mine is idling at 1.16V for 1600Mhz. But if I turn the LLC to Extreme or Very High, I need less offset, somewhere about 0.02-0.05, and in that case my Idle Voltage is even lower, about 1.05, which is bringing my CPU to idle crash.

So I think the best LLC is the one which is keeping your idle voltage high enough so that the windows doesn't freeze when going to idle (there are enough cases of idle freeze on the internet).

 

IMC should, according to Westman, be set higher. I have it running 1.1V now, and all is fine. This has helped immensly with double posts and no hangs after double post when booting into windows.

 

All power saving should be at enabled, C1E, C3, C5 or is it C6?, including speedstep, and you should definitely observe your idle vcore.

Hi

My eng ar very bad , i you think ai was rude a apologize to all af you.

 

I spend over 20years overclocking diferent systems at high level.

 

As you see 1.4v on the ivy when he have 90c on prime with 1.36v second

Fry the cpu can be easy when intel inruduced the 775 socket a new problem pinburnout when

feeding high volt on X6800 QX6700(1.8-2v).

the problem have followed to 1156 1155 , The Sandy put a new light when it was capable of go wery high for

the normal clocker , it can be signs when OC over long time with 1.52-1.57V.

i have the first signs with my 2700k @5.2 24/7 , very small burnmarks on CPU the one that feed the voltages nothing on the socket pins.

 

The advice if new to OC read and learn from others mistakes, as Bimmer say ASUS oc tool seems better but i dont trust the Easy tune.

 

Back to Martin , it must be a sort of compabilty issiue with your mems, you have a MoBo and CPU capable of +2600mhz, and they dont

do the XMP settings strange. the first thing i shuld do is test a differnt set of mems even slower that you ar 100% sure that it is not

the mems holding back your OC, 4.4 with 3570 and BSOD in FSX normally mem related (memcontroller settings or timings)

 

If rude i apologize one more time.

 

Kind Regards Hasse