Need help overclocking i7 4790k

[Philz69]

Hey guys! So im currently at 4.8ghz @ 1.3v and am stable!

I cant even boot at 4.9ghz @ 1.375v with 1.9v vccin... Is there something im doing wrong? Adding 1 to the multiplier shouldnt require + 0.075v and still not be stable enough to get into windows!
Any tips on how i could go further? Btw, im fairly new to CPU overclocking!

[Stadin6]

i am not an expert on overclocking but 4.8Ghz it very good but if you want to go further i think you can increase to 1.4v if you have good enough cooling

[The Cool n00B]

Hey guys! So im currently at 4.8ghz @ 1.3v and am stable!

I cant even boot at 4.9ghz @ 1.375v with 1.9v vccin... Is there something im doing wrong? Adding 1 to the multiplier shouldnt require + 0.075v and still not be stable enough to get into windows!

Any tips on how i could go further? Btw, im fairly new to CPU overclocking!

It just means your chip is topping out. Different bin numbers overclock differently, it's just how it works. Increase your voltage some more, go again.

 

1.3v on AMD CPUs is enough for like 4-4.5 GHz, 4.2 for me lol (Ik you have intel, I'm just saying.)

[Philz69]

But why would + 0.1ghz require 0.1v? That doesnt seem normal at all, i must be missing something!

Temps wont be a limit because i will be rurning full custom loop watercooling really soon!

[BoredErica]

Hey guys! So im currently at 4.8ghz @ 1.3v and am stable!

I cant even boot at 4.9ghz @ 1.375v with 1.9v vccin... Is there something im doing wrong? Adding 1 to the multiplier shouldnt require + 0.075v and still not be stable enough to get into windows!

Any tips on how i could go further? Btw, im fairly new to CPU overclocking!

Adding 1 multiplier and +0.075 should be enough to boot if your current multiplier was stable. 

 

What did you use to test stability?

 

And finally, it looks impossible to hit 4.9 anyways. Booting is miles away from stability, and you can only gun the voltage so far even if temps aren't a problem. 2.0v vccin probably won't do much, but worth a tweak I guess.

[Zackfoo]

[FilipSebik]

Hey guys! So im currently at 4.8ghz @ 1.3v and am stable!

I cant even boot at 4.9ghz @ 1.375v with 1.9v vccin... Is there something im doing wrong? Adding 1 to the multiplier shouldnt require + 0.075v and still not be stable enough to get into windows!

Any tips on how i could go further? Btw, im fairly new to CPU overclocking!

I think everone is doing it the hardest way but if you increasu turbo value, its the same as ocing thru base clock

[Smooth Bunz]

Im running 4.8ghz @ 1.325v on my 4790k I tried 4.9 but it just wont go that far even if the coolign is great.

[Philz69]

Adding 1 multiplier and +0.075 should be enough to boot if your current multiplier was stable.

What did you use to test stability?

And finally, it looks impossible to hit 4.9 anyways. Booting is miles away from stability, and you can only gun the voltage so far even if temps aren't a problem. 2.0v vccin probably won't do much, but worth a tweak I guess.

I use Aida64 and tested 2 hours!

Is 1.5v safe for benchmarking on water?

[airdeano]

set vccin to 2.0v, load-line calibration (LLC) to extreme, and RAM to 1333MHz

(manual set timings), and current voltage (temps under 85°) retest. instant fail,

you've not won the lottery. you can stretch the voltage (under 85°), but for a

banzai run of 1.5v under water prolly won't heed any better as the over temp

will prolly fail before the stability.

[BoredErica]

I use Aida64 and tested 2 hours!

Is 1.5v safe for benchmarking on water?

Testing Aida64 is not enough to ensure stability. Aida (full suite at least) is the easiest stress test I've ever tested, based on temperature, power draw, and my own testing.

 

For benchmarking it should be fine. 1.5v could probably use over 2v vccin I would reckon.

[Philz69]

Testing Aida64 is not enough to ensure stability. Aida (full suite at least) is the easiest stress test I've ever tested, based on temperature, power draw, and my own testing.

 

For benchmarking it should be fine. 1.5v could probably use over 2v vccin I would reckon.

Do you know any real world task that are even close to getting to aida64 level? I dont think encoding ( wich is the worse i can think of ) can make my overclock fail if aida64 didnt. But i'm not sure! I'll try booting at 1.5v when i install my watercooling

[BoredErica]

Do you know any real world task that are even close to getting to aida64 level? I dont think encoding ( wich is the worse i can think of ) can make my overclock fail if aida64 didnt. But i'm not sure! I'll try booting at 1.5v when i install my watercooling

I have two graphs for temperature and one graph for power draw, but the power draw and one of the temperature charts are for Skylake. The testing is better on the Skylake ones and the tests are updated. The Haswell one is a bit more relevant to you though, since yours is DC.

 

Haswell:

 

Skylake:

 

 

 

Looking at the graphs side by side I noticed something interesting, Aida seems much easier on Skylake compared to Haswell...

Anyways, if you took our x264 test (latest version), it would be harder to pass and hotter than Aida full suite, and it is actually just encoding.  And 2 hours is short... For example on my Skylake chart, everybody on there has to pass x264 for several hours before I add them. 

 

From all I have seen, +0.75 is reasonable... to stabilize, not to just be able to boot (or even fail to boot) when the previous multiplier was stable. 

 

The Haswell chart was done when Haswell first came out... so it's been a while. I don't remember Aida full suite being that hot. With Skylake (different CPU, huge wildcard) and updated stress tests, it really falls behind. *shrugs* One thing to check just in case... you're not trying to do 4.9ghz core and 4.9ghz cache right? Because that could very well cause you to fail to boot. Just in case mobo auto rules are dumb.

 

I guess practically speaking, this exercise isn't a good use of time because all you're trying to do is boot in, which is miles away from stability. Voltage degradation would be scary.

[Imakuni]

Do you know any real world task that are even close to getting to aida64 level? I dont think encoding ( wich is the worse i can think of ) can make my overclock fail if aida64 didnt. But i'm not sure! I'll try booting at 1.5v when i install my watercooling

For starters, there is a reason why we say "don't go over 1.4v" on Haswell chips. It isn't safe to go at 1.5v.

 

Next, 4.8ghz is already awesome, 4.9 is just stretching it.

 

Third, why the heck would you want more? If you are in a situation where you really need that extra speed, it'll most likely be a somewhat similar load to Aida. At that point, it's either going to be unstable at 4.9ghz, or it'll just be plain useless to boost further. Stick to 4.8, as I said, it's a pretty good chip already.

 

Last, Prime95 (not the stress test, the ACTUAL reason the program exists), Folding, Boinc, Rendering, these are all "everyday" tasks that can hit and even surpass Aida64 stress levels.

[Philz69]

-snip-

My goal is actually trying to pass 3dmatk at 5.0ghz, but i need to be able to boot first, i'll check if my cache is getting oced too fast by auto rules, then i'll try 2.0v vccin and retry to boot 4.9ghz!

Thanks a bunch for poiting out aida64 really isnt demanding! Do you think i can pass 3dmark if i pass aida64 though?

[Philz69]

For starters, there is a reason why we say "don't go over 1.4v" on Haswell chips. It isn't safe to go at 1.5v.

Next, 4.8ghz is already awesome, 4.9 is just stretching it.

Third, why the heck would you want more? If you are in a situation where you really need that extra speed, it'll most likely be a somewhat similar load to Aida. At that point, it's either going to be unstable at 4.9ghz, or it'll just be plain useless to boost further. Stick to 4.8, as I said, it's a pretty good chip already.

Last, Prime95 (not the stress test, the ACTUAL reason the program exists), Folding, Boinc, Rendering, these are all "everyday" tasks that can hit and even surpass Aida64 stress levels.

Well, in running 1.325v and a 51% core clock increase, on a flashed bios, on air on my gpus, unsafe doesnt scare me!

Second, i need 5ghz to achieve world best 4790k + 780x2 in 3dmark

Im missing a mere 1000 points, and had a 1000points increase going from 4.6 to 4.8

Third, see two

[Imakuni]

Well, in running 1.325v and a 51% core clock increase, on a flashed bios, on air on my gpus, unsafe doesnt scare me!

Second, i need 5ghz to achieve world best 4790k + 780x2 in 3dmark

Im missing a mere 1000 points, and had a 1000points increase going from 4.6 to 4.8

Third, see two

You'll only get top % with LN2 cooling. GL with that.

[Philz69]

Not for best in slot ( 4790k + 2x780 ) check on 3dmark and use advanced search!