BSOD from overclocking.

[krome_ninja_]

Hello all, I'm new to overclocking (apart from a mild 4Ghz OC) but I am trying to get 4.4Ghz out of my 4670k. I get a boot with many different voltage settings, but eventually after stress testing i get a blue screen. Either of the two:

Machine_Check_Exception or WHEA_uncorrectable_error

I have been doing a little research to try and gain more knowledge, but i can't seem to figure it out

I am running a custom cpu loop with idle temps around 25C @ 4GHz and around 50C when on load.

I have tried increments of 5 with the cpu core voltage, but no avail unfortuantly.

Would anyone be able to assist me please? Im an OC noob stuck with blue screens.

Thank you

 

[skaif]

I'm not the most experienced but that is a fairly standard BSOD related to an unstable OC
Post your volts and clocks so someone more knowledgable than I can give some help!

 

[savagesam117]

I'm not 100% but i'm fairly sure the 4670k's need quite a lot of vcore to reach 4.4 in the 1.3 region. As said, what are your settings at the moment?

 

[krome_ninja_]

I'm not the most experienced but that is a fairly standard BSOD related to an unstable OC
Post your volts and clocks so someone more knowledgeable than I can give some help!

Ok thats good to know I'm not sure if i have a bad overclocker or I'm just doing something wrong (probably).

I have been trying many different voltages at the same multiplier of 44.

I started off around 1.230 (Didn't boot and got a 9A error if I remember correctly)

Then I started incrementing the cpu core voltage by 5 each time, I am currently testing 1.275 @ 4Ghz.

I have auto turned off for the core voltage and is set to override.

The VCCIN hasn't be altered and is running on auto.

I'm not 100% but i'm fairly sure the 4970k's need quite a lot of vcore to reach 4.4 in the 1.3 region. As said, what are your settings at the moment?

I am currently using a 4670k, I haven't got he newer chip model and hopefully the above information, might help a little. If there is any settings i didn't include just let me know

Thanks for the help so far! Appreciated

 

[Superpatsy]

Like others have said, that BSOD is OC related and is normally your VCore not being high enough.

I have the same chip as you at 4.4 with 1.29V and my temps are sitting pretty just now. All depends on how lucky you are with the silicon lottery

 

[krome_ninja_]

Like others have said, that BSOD is OC related and is normally your VCore not being high enough.

I have the same chip as you at 4.4 with 1.29V and my temps are sitting pretty just now. All depends on how lucky you are with the silicon lottery

Ok, so maybe If i start from around that voltage and work my way down if the clock is stable?

Yeah I probably don't have the best chip, but I just want to try and get it stable

 

[krome_ninja_]

I just tried a cpu core voltage of 3.0 and system ran IBT very high and maximum 10 passes fine, but after 20 minutes of prime 95 the system froze. With this should i increase the cpu core voltage?

Temps whilst running prime p5 are mid 50's to low 60's.

Thanks

 

[MrMD]

What is your motherboard?

And what are the settings you were using for a stable 4ghz? Vcore,vRing,VCCIn,Cache ratio

Edit:With a vcore of 1.27 you should be getting better than 4ghz stable,even with a bad clocker.

If you have a gigabyte board try these settings

Vcore: 1.25
Multiplier: 42x
Vring :1.15
Cache ratio: 40x
Vccin 1.9v
LLC: Extreme/turbo

Also disable your rams XMP profile for now.

 

[krome_ninja_]

What is your motherboard?

And what are the settings you were using for a stable 4ghz? Vcore,vRing,VCCIn,Cache ratio

Edit:With a vcore of 1.27 you should be getting better than 4ghz stable,even with a bad clocker.

For the stable 4ghz I only altered the multiplier and didn't touch anything else, as they were set to auto.

I'm not sure if it is a bad overclocker or i'm just doing something wrong. Like i can gte most voltages to boot, but either get a blue screen or freezes, which i have read you should increase the vcore. Not sure if that is correct..

When trying to get 4.4ghz what rough type of setting should you be seeing?

Also I am running an MSI z87 g43

 

[MrMD]

For the stable 4ghz I only altered the multiplier and didn't touch anything else, as they were set to auto.

I'm not sure if it is a bad overclocker or i'm just doing something wrong. Like i can gte most voltages to boot, but either get a blue screen or freezes, which i have read you should increase the vcore. Not sure if that is correct..

When trying to get 4.4ghz what rough type of setting should you be seeing?

Also I am running an MSI z87 g43

4.4ghz is usually somewhere between 1.25-1.30v generally speaking

Heres a few things you should do.

1.Gointo your bios and 'load optimized defaults' this will set your cpu settings back to stock,then boot into windows.Now you want to stress test to see what your actual vcore is underload at stock,this is just usefull to know as a baseline.

2.For stressing dont use prime95,it apply extra voltage outwith your control and due to that it isnt that usefull to find out how stable a system actually is,aswell as adding significant extra heat(You've not really noticed cause your under water ).Use asus realbench instead http://rog.asus.com/file/?download=RealBench_v2.4.zip. I have had multiple OC's on different cpu's freeze/crash out on prime95 but be rock solid in everything else for instance.


The settings i posted above are worth a try^^,im not familar with the msi boards VCCIN might be labeled as Input voltage,and Vring might be labeled as cache voltage.

By the sounds of it,if all you are doing is increasing the multiplier and leaving everything else on auto your probily running into Cache ratio instability,or maybe the board just isnt increasing the input voltage accordingly.

 

[krome_ninja_]

4.4ghz is usually somewhere between 1.25-1.30v generally speaking

Heres a few things you should do.

1.Gointo your bios and 'load optimized defaults' this will set your cpu settings back to stock,then boot into windows.Now you want to stress test to see what your actual vcore is underload at stock,this is just usefull to know as a baseline.

2.For stressing dont use prime95,it apply extra voltage outwith your control and due to that it isnt that usefull to find out how stable a system actually is,aswell as adding significant extra heat(You've not really noticed cause your under water ).Use asus realbench instead http://rog.asus.com/file/?download=RealBench_v2.4.zip. I have had multiple OC's on different cpu's freeze/crash out on prime95 but be rock solid in everything else for instance.


The settings i posted above are worth a try^^,im not familar with the msi boards VCCIN might be labeled as Input voltage,and Vring might be labeled as cache voltage.

By the sounds of it,if all you are doing is increasing the multiplier and leaving everything else on auto your probily running into Cache ratio instability,or maybe the board just isnt increasing the input voltage accordingly.

Ok will do that, I will run the realbench you linked also. Hopefully that will give a starting point for me. Ah I have used a few different stress software, but never knew which one was better. Thanks for that

haha yeah i only recently added the cpu loop thats why I'm trying to squeeze a little more performance out of the system


I know on my board there is VCCIN, but i don't remember seeing cache voltage.

What i have been doing is increasing the multiplier then adjusting the vcore.

 

[MrMD]

This thread has a really good guide for overclocking on haswell http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics and is deffo worth a quick read

When it comes to stress software,there isnt any one thats any better than an another,there are a few that are downright abusive tho

Cache voltage might be labeled Vring voltage on your motherboard.

Sometimes you can get away with just increasing Vcore and the multi,but eventually you have to start tweaking other settings as you go for higher clocks.

For reference on my chip

Stock settings so all auto in the bios
Vcore 1.130v
Vring: 1.15v
Cache ratio: auto
Input/vccin: 1.800v


Overclocked to 4.5ghz settings All manual input.
Vcore 1.296v
Vring: 1.19v
Cache ratio: 40x
Input/vccin: 1.920v
LLC:Extreme/turbo

I always found the cache ratio causes instablity past 4.1ghz(on auto cache ratio scales with multiplier) for me. Just locking it at 40x made things simpler as it help removed some of the variables in getting stablity.

 

[krome_ninja_]

Ok will do that, I will run the realbench you linked also. Hopefully that will give a starting point for me. Ah I have used a few different stress software, but never knew which one was better. Thanks for that

haha yeah i only recently added the cpu loop thats why I'm trying to squeeze a little more performance out of the system


I know on my board there is VCCIN, but i don't remember seeing cache voltage.

What I have been doing is increasing the multiplier then adjusting the vcore.

Where should i go now that i know my baseline? Thanks

I changed the profile to stock settings and then ran a stress test. (The asus rog software wouldn't work for me for some weird reason) anyhow below are my results:

 

[krome_ninja_]

This thread has a really good guide for overclocking on haswell http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics and is deffo worth a quick read

When it comes to stress software,there isnt any one thats any better than an another,there are a few that are downright abusive tho

Cache voltage might be labeled Vring voltage on your motherboard.

Sometimes you can get away with just increasing Vcore and the multi,but eventually you have to start tweaking other settings as you go for higher clocks.

For reference on my chip

Stock settings so all auto in the bios
Vcore 1.130v
Vring: 1.15v
Cache ratio: auto
Input/vccin: 1.800v


Overclocked to 4.5ghz settings All manual input.
Vcore 1.296v
Vring: 1.19v
Cache ratio: 40x
Input/vccin: 1.920v
LLC:Extreme/turbo

I always found the cache ratio causes instablity past 4.1ghz(on auto cache ratio scales with multiplier) for me. Just locking it at 40x made things simpler as it help removed some of the variables in getting stablity.

I have nearly read through most of the guide, very informative! I will probably have to read it through again to let it all sink in though haha. Thanks for that share.

I mainly wanted to try and get 4.4ghz out of my chip, but with the print screen in the above post i'm not sure what type of voltage to start at for a 4.4ghz clock.

 

[krome_ninja_]

I have managed to get my overclock stable at 4.3ghz. But my vcore is drastically different when i'm in the OS, compared to the BIOS. I have attached an image to show you.



Does anyone know why this happens?

 

[wazza300]

its down to loadline calibration,it adds more voltage to counter cpu vdroop under load

its normal,just take it into account when setting cpu v in bios

 

[MrMD]

Good to see you got it stable m8

and yea the extra voltage is LLC as Wazza mentioned,nothing to worry about

 

[krome_ninja_]

its down to loadline calibration,it adds more voltage to counter cpu vdroop under load

its normal,just take it into account when setting cpu v in bios

Good to see you got it stable m8

and yea the extra voltage is LLC as Wazza mentioned,nothing to worry about

Ok thank you both for that reassurance Another thank you to MrMD for helping me at the start