4790k Overclocking

[LemonSpice]

I know this is a noob question but right now i have 1.365 volts at 4.8ghz on my 4790k i was wondering for a 24/7 overclock planning to use this cpu for 2 years minimum how many volts should i put through it before cpu degradation will start occurring right now my cooling is a nzxt x61 with nfa14s running full with arctic mx4 thermal paste. I have heard from 1.435 to 1.3 volts please do not spam

[Tedster]

I'm a noob answerer but what are your temps like idle and load?

Is it completely stable?

 

See if someone more knowledgeable answers.

[Jade]

http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/ 1.4 or higher begins to degrade.

[Speedbird]

Can you get it to 1.3? That seems to be the sweet spot for Haswell.

[LemonSpice]

well the temps under full load hit 85-90 under prime 95 at 1.4 volts on my earlier testing ithink i can hit 5ghz at 1.42 volts

[LemonSpice]

http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/ 1.4 or higher begins to degrade.

looking at it it says 1.44 whch is part of my confusion

[Real_PhillBert]

You are more ballsy than I. My 4.8GHz profile is 1.3125V and I only use it for benchmarks. I use 4.7GHz at 1.275V for 24/7 OC.

 

Edit: Perhaps I am being overly cautious though.

[LemonSpice]

You are more ballsy than I. My 4.8GHz profile is 1.3125V and I only use it for benchmarks. I use 4.7GHz at 1.275V for 24/7 OC.

well i have a quic upgrade cycle and either i will get broadwell or skylake with new mobo

[silenthill_69]

1.365v is fine bit on the high side but ok, you well probably upgrade to a new cpu before it degrades  

[LemonSpice]

1.365v is fine bit on the high side but ok, you well probably upgrade to a new cpu before it degrades  

yea i was wondering how high volts 1.43 with temps of 50c in games and 90 under load

[Jade]

looking at it it says 1.44 whch is part of my confusion

It's right. Though I almost never see people go past 1.4 because the temps leave their 'comfort zone.' 85-90 is a bit iffy.

[EMENCII]

Well, i'd leave it as high as it reaches 80°C max, just because i don't like having too high temps... (and my beasty 4770k runs 4.1Ghz 1.255v and 4.16Ghz at 1.3v so....)

[Real_PhillBert]

well i have a quic upgrade cycle and either i will get broadwell or skylake with new mobo

If you upgrade often, then go for it. If/when it croaks will be your que to upgrade

[LemonSpice]

It's right. Though I almost never see people go past 1.4 because the temps leave their 'comfort zone.' 85-90 is a bit iffy.

yea i was thinking about delidding i know only 10c on devils and then and maybe 1.423vlts

[LemonSpice]

If you upgrade often, then go for it. If/when it croaks will be your que to upgrade

also frienmd has a pentium anniversary edition so i wont be out

[WoodenMarker]

looking at it it says 1.44 whch is part of my confusion

It's 1.35v-1.45v which averages out to ~1.4v.

[LemonSpice]

It's 1.35v-1.45v which averages out to ~1.4v.

at 1.45 v will it degrade a lot

[silenthill_69]

what type of load, real world working load or prim95 cuz it never really gets loaded like prim95 in actual work loads

[LemonSpice]

what type of load, real world working load or prim95 cuz it never really gets loaded like prim95 in actual work loads

i mainly do like 80 runs of standered intel burntest or prime 95 large ffts

[LemonSpice]

Also what is the best way to squezz more mhz out of it i am already doing bclk i was wondering if i should mess with input volatade and cahce timings

[LemonSpice]

what type of load, real world working load or prim95 cuz it never really gets loaded like prim95 in actual work loads

cinebench and renders

[WoodenMarker]

at 1.45 v will it degrade a lot

That's why it's the estimated upper limit. 

Also what is the best way to squezz more mhz out of it i am already doing bclk i was wondering if i should mess with input volatade and cahce timings

Get better cooling. Lower temps can lower transistor leakage, power consumption, and thus voltage needed for the same oc.

[silenthill_69]

prim95 push's the cpu to it's limits also the memory controller on the cpu and all catch levels so 80 is going to hurt your cpu by shorting the life cycle of the integrated transistors specially at 80-90c so take it easy with prim95   

[LemonSpice]

That's why it's the estimated upper limit. 

Get better cooling. Lower temps can lower transistor leakage, power consumption, and thus voltage needed for the same oc.

I have a nzxtx61 the only better is custom

[WoodenMarker]

I have a nzxtx61 the only better is custom

Have you tried lowering the vcore? Due to leakage, higher voltage doesn't always scale perfectly with oc'ing. 

Lowering the cpu pll can voltage also help lowers temps. Other than that, there's delidding.