Bad i5-4690k chip?(overclocking)

[Theodouk]

Specs
Motherboard: Asus rampage maximus VII hero.
Processor: i5-4690k
Psu: 850watt thermaltake
Gpu: 2x gtx 980
Cpu cooler: be quiet dark rock pro
Ram: TeamGroup Elite Black 8GB (2x4GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit

So I would like to know if I'm missing something here, my chip is currently stable at 4.2ghz with a vcore of 1.265(max temp 63c). I can't go any lower i just blue screen. My question is, I would like to hit 4.4 ghz which is what is average with what I've seen. People are doing it with the voltage I'm currently running at which is very confusing. I'm wondering if I have a rubbish chip because I can't hit 4.3ghz at all. I even set my card to 1.35vcore and still blue screened on windows after a few minutes and my temps only hit 81c with prime at load. Am I missing something in the mobo settings? I'm just rather frustrated because I have a good cooler which isn't cheap and I can't even use it fully.
Could it be my ram since it's not xmp compatible? And isn't the best ram but I don't think it would effect this would it?
Thanks for any answers

 

[Vitric9]

Have you set the CPU cache ratio ?

 

[Jonathan Cave]

Hello,

Each chip varies as you say... my 4670k i can only hit 4.3Ghz with 1.3v - Your Ram won't be causing an unstable coverclock. Just dial it in at 1600.

Have you tried 1.3v with a higher multiplier of 43 or 44?

 

[Theodouk]

Hello,

Each chip varies as you say... my 4670k i can only hit 4.3Ghz with 1.3v - Your Ram won't be causing an unstable coverclock. Just dial it in at 1600.

Have you tried 1.3v with a higher multiplier of 43 or 44?

Yes that's how I've been overclocking, I set the blck to 100 with my ram at 1600 then change the ratio to 42 and up etc. but no I can't hit 43. Am I overclocking wrong? Should I change the blck? I read that just changing the ratio is the best way

 

[Jonathan Cave]

Normally the multiplier is best practice , the BCLK is rarely ever manually changed and use by people to squeeze out the last drop of performance before instability sets in as it over/under clocks the base clock (BCLK) of your system (PCIE, Memory controller ... everything) and can cause other instabilitiy issues whereas the base clock of 100 and adjusting the CPU multiplier limits the overclock to the CPU.

i consider my 4670k to be a 'crap chip' due to the high voltages required to get it over 4.3ghz.

 

[Theodouk]

Have you set the CPU cache ratio ?

Its set to automatic so no. I have tried previously with setting it to 35 and had no luck with it. now its on auto

 

[Vitric9]

I am not sure what the Auto setting sets it to but i know setting the multiplier one value less than your CPU Ratio. Say you have CPU Ratio set to 44 , set the cache ratio to 43. I don't know how to explain it but it can cause instability. Lets hope that does something. Maybe the LLC is not set high enough.

 

[Theodouk]

I am not sure what the Auto setting sets it to but i know setting the multiplier one value less than your CPU Ratio. Say you have CPU Ratio set to 44 , set the cache ratio to 43. I don't know how to explain it but it can cause instability. Lets hope that does something. Maybe the LLC is not set high enough.

was able to bring up the core multiplier to 43 now but my vcore has to be set to 1.35! thats crazy high isnt it? max temp 78c is that not stable to have it at?

 

[Jonathan Cave]

Section 8 - Overclocking and Vcore

Overclocking should not be attempted with Core voltage (Vcore) settings in “Auto” because BIOS will apply significantly more voltage than is necessary to maintain stability. Voltage translates into Power (Watts), which is dissipated as heat.

Overclocked processors can reach up to 150% of their Thermal Design Power (TDP) even when using manual Vcore settings, so high-end air or liquid cooling is critical. Every processor is unique in it's overclocking potential, voltage tolerance and thermal behavior.

Regardless, excessive Vcore and temperatures will result in accelerated "Electromigration" - https://www.google.com/?gws_rd=ssl#q=Electromigration - which prematurely erodes the traces and junctions within the processor's layers and nano-circuits. This will eventually result in blue-screen crashes, which will become increasingly frequent over time.

CPU's become more susceptible to Electromigration with each Die-shrink, so smaller architectures are less tolerant to over-volting. Nevertheless, Vcore settings should not exceed the following:

-> Core 2

1st. Generation 65 Nanometer ... 1.50 Vcore
2nd Generation 45 Nanometer ... 1.40 Vcore

-> Core i

1st. Generation 45 Nanometer ... 1.40 Vcore
2nd Generation 32 Nanometer ... 1.35 Vcore
3rd Generation 22 Nanometer ... 1.30 Vcore
4th Generation 22 Nanometer ... 1.30 Vcore
5th Generation 14 Nanometer ... 1.25 Vcore

When tweaking your processor near it's highest overclock, keep in mind that for an increase of 100 MHz, a corresponding increase of approximately 40 to 50 millivolts (0.040 to 0.050) is required.

http://www.tomshardware.co.uk/forum/id-1808604/intel-temperature-guide.html

You shouldn't go above 1.3 according to this article.