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Haswell Overclocking Guide [With Statistics] - Page 704

post #7031 of 19540
Quote:
Originally Posted by JackNaylorPE View Post

Exactly .... some applications yes, some applications no .... and take into account the temperatrure / voltage penalty

Which applications yes?
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post #7032 of 19540
Quote:
Originally Posted by brandon6199 View Post

Exactly. I can probably push 1.45v through my chip, or maybe even more, but that'll be well into the degradation zone.

This is the first time I've ever been limited by voltage degradation and not heat redface.gif
Quote:
Originally Posted by brandon6199 View Post

Exactly. I can probably push 1.45v through my chip, or maybe even more, but that'll be well into the degradation zone.

This is the first time I've ever been limited by voltage degradation and not heat redface.gif
Well for me im not delidded and iam running 1

No one even knows when degradation starts so your point is not valid
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post #7033 of 19540
We're pretty sure that it's not safe to run 1.5 load vcore 24/7 though. Nobody's really running 1.45 load vcore (setting ~1.42-1.43 in bios) for extended loads so it's harder to say how fine that is
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post #7034 of 19540
Quote:
Originally Posted by Cyro999 View Post

We're pretty sure that it's not safe to run 1.5 load vcore 24/7 though. Nobody's really running 1.45 load vcore (setting ~1.42-1.43 in bios) for extended loads so it's harder to say how fine that is

I ran that to try to stabilize 4.8 ghz. Kept getting random bsod's... Never did figure out the cause. Mostly got 01a but also got 07e. Got frustrated so just backed down to 4.7 ghz (which I need 1.36 vcore for stability).
post #7035 of 19540
Fairly sure the OP of the Haswell Delidding thread stated he saw degradation @ 1.4v. I have no idea on the specifics, but as was mentioned above, there's a reason why very few people are pushing up to 1.4v even with strong cooling setups (hint: it's not due to temps)
post #7036 of 19540
Quote:
Originally Posted by brandon6199 View Post

Exactly. I can probably push 1.45v through my chip, or maybe even more, but that'll be well into the degradation zone.

This is the first time I've ever been limited by voltage degradation and not heat redface.gif
Quote:
Originally Posted by Cyro999 View Post


If you can name a program where 45/45 performs better than 46/39, it would be very insightful

I'm not aware of any where it's even close

That was why I didn't delid from the getgo .... wanted to see where I was w/o it..... was quite happy with 46/46 at peak at 1.38v and 1.42 usual max and 1.44 peak instantaneous (74C) but new BIOS has it peaking at 1.48 w/ 46/39 (81C) last nite ....didn't mind the heat but 1.48 was a bit unnerving.......never seen > 62C outside of benching tho.
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post #7037 of 19540
Thread Starter 

Let's get down to business...

 

Quote:

Originally Posted by brandon6199 View Post

Pumping 1.42v through my i7-4770k trying to get 46x stable with 35x uncore... and it's not happening. I do not wish to pump any more vcore through my chip for a 24/7 OC, even though I'm only hitting 60C full load with Prime95. Sad, isn't it?

I can get 45x stable at 1.36v, but 46x will take upwards of 1.42v, and who knows what 47x or 48x will take. :roll eyes:

Sadly, I spent lots of money on my custom loop only to find out that I'm not limited by the heat output, but rather the vcore that my chip needs, and I'm not willing to go past 1.43v for 24/7 use.

Guess 45x isn't that bad... but according to the charts, it looks like 90% of the people that were charted had better luck than I did. Well at least my GTX 780 Ti turned out to be a golden overclocker thumb.gif

 

It's possible your input voltage is holding you back. What is your input voltage?

Quote:
Originally Posted by sebastianmihail View Post

Hello!

This is my build: http://www.flickr.com/photos/sebastian-mihail/11423392263/

Overclocked @ 4.4ghz with 1.149 V tested with prime95 for 4 hours.

http://www.flickr.com/photos/sebastian-mihail/11431586313/

Build specifications:

Intel Core i5 4670K 3.4GHz ( OC: 4.0@1.035V, 44@1.149V )

Noctua NH-D14

Asus Z87-K

Kingston HyperX Blu 16GB (4x4GB) DDR3 1600MHz CL9 1.65V

XFX DD Radeon HD 7870 GHz Edition (Tahiti LE) 2GB GDDR5
( OC: GPU@1246Mhz MEM@1566Mhz )

Creative X-FI Xtreme Music

Hard-drives:
WD 1TB SATA-III 7200 rpm 64MB Caviar Blue

Samsung 1 TB SATA-II 7200RPM 32MB Spinpoint F DT

SSD: Kingston 120GB SATA-III 2.5 inch V300 SSDNow

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Antec Three Hundred

DVD-Writer Samsung SH-S223F/BEBE

4x Arctic Cooling F12
1x Arctic Cooling F14
1x Noctua NF-P12
1x Noctua NF-P14

 

You will be charted soon, thanks.

If you are reading this, please also post uncore settings, thanks.

Quote:
Originally Posted by fleetfeather View Post

call me crazy, but does anyone else feel that custom looping Haswell is kind of redundant once you delid? I feel like you're not going to get temp limited until you're well into the degradation zone anyway lol...

 

 

Quote:
Originally Posted by fleetfeather View Post


what are you gaining from those lower temps? all i can think of is long-term cpu longevity (for those who aren't upgrading to broadwell, i guess) and epeen.

Having things colder makes me feel happier. Plus, some people just want the loop, or they already have a custom loop, or they want a modular cooling system for the entire computer. Plus, if you're one of the types that want Linpack, well, loop + delid still might not be enough for you. With D14 I was hitting throttling point at 1.25v. I'd imagine loop + delid just makes it enough to bear linpack at 1.25v. Now go to 1.4v. Nuclear explosion once again!

 

Quote:
Originally Posted by Doug2507 View Post

I can't. For everything i run 46x39 wins every time but there may be guys running other applications where 45x45 would be better, that's why i didn't discount it and said application dependant.

EDIT - I'm not really sure why all of this is being discussed either. The majority of users on this forum/thread will benefit from higher core vs 1:1 etc. The performance benefits from increasing uncore to within 300mhz or less may be quantifiable by statistic but if you sat down with one rig running 45x40 one day then 45x42 the next day not in a million years would you notice a difference unless a benchmark told you.

Mentioning the 45/40 vs 45/42 is a waste of time because after a long test by me with 15 different benchmarks, it proves that a higher multiplier by one beats a higher uncore multiplier by one and due to that and various other reasons, OCing my way is the best. If I started telling people that uncore matters, I guarentee you there will be people looking for a closer to 1:1 OC again to the detriment of their performance. It's kind of a coincidence to run 15 benchmarks in a row and have them all point to the same thing, and then one guy comes in and look, new benchmark that "everybody uses" that is affected by uncore!

 

I'm not undermining the entire procedure and risk having people run out for 1:1 without ample reason to just let it happen, seeing as how the giant majority demonstrably favors higher core multiplier vs higher uncore multiplier. Saying it's app dependent, might as well say 47/42 is not always faster than 46/42 due to GPU bottlenecking. 

 

Uncore doesn't really matter for performance. You overclock core with uncore at stock, then overclock uncore afterwards, but never decreasing core to get higher uncore. That is that. Anybody that disagrees can start their own thread where they promote their own method.

 

Quote:
Originally Posted by fleetfeather View Post

Fairly sure the OP of the Haswell Delidding thread stated he saw degradation @ 1.4v. I have no idea on the specifics, but as was mentioned above, there's a reason why very few people are pushing up to 1.4v even with strong cooling setups (hint: it's not due to temps)

I said past 1.4v it's a bit dicier. No proven cases of degradation and I don't expect any at this point in time.

There has been talk of a 'break in' which may be seen as degradation, and degradation which may actually be due to shoddy stressing because your setting were never stable in the first place.


Edited by Darkwizzie - 12/18/13 at 9:56am
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post #7038 of 19540
Quote:
Originally Posted by Cyro999 View Post

Which applications yes?

The one in the post
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post #7039 of 19540
Quote:
Originally Posted by Darkwizzie View Post

Having things colder makes me feel happier. Plus, some people just want the loop, or they already have a custom loop, or they want a modular cooling system for the entire computer. Plus, if you're one of the types that want Linpack, well, loop + delid still might not be enough for you.

I said past 1.4v it's a bit dicier. No proven cases of degradation and I don't expect any at this point in time.

Yep, those are great reasons to custom cool your CPU for sure. But those reasons alone aren't really escaping redundancy, but rather they are more a matter of aesthetics, budget and convenience. They play no role in the performance of the chip (other than longevity, as Doug said). I guess Linpack is a exception haha.

I find it interesting that having things colder makes you feel happier when you personally run such high voltage on a D14... It's not a contradiction, but it's an interesting observation.

I was referring to the OP of the Haswell delidding thread, not the Haswell overclocking thread tongue.gif
post #7040 of 19540
Quote:
Originally Posted by Darkwizzie View Post

It's possible your input voltage is holding you back. What is your input voltage?

You will be charted soon, thanks.


Having things colder makes me feel happier. Plus, some people just want the loop, or they already have a custom loop, or they want a modular cooling system for the entire computer. Plus, if you're one of the types that want Linpack, well, loop + delid still might not be enough for you. With D14 I was hitting throttling point at 1.25v. I'd imagine loop + delid just makes it enough to bear linpack at 1.25v. Now go to 1.4v. Nuclear explosion once again!

Mentioning the 45/40 vs 45/42 is a waste of time because after a long test by me with 15 different benchmarks, it proves that a higher multiplier by one beats a higher uncore multiplier by one and due to that and various other reasons, OCing my way is the best. If I started telling people that uncore matters, I guarentee you there will be people looking for a closer to 1:1 OC again to the detriment of their performance. It's kind of a coincidence to run 15 benchmarks in a row and have them all point to the same thing, and then one guy comes in and look, new benchmark that "everybody uses" that is affected by uncore!

I'm not undermining the entire procedure and risk having people run out for 1:1 without ample reason to just let it happen.

I said past 1.4v it's a bit dicier. No proven cases of degradation and I don't expect any at this point in time.
There has been talk of a 'break in' which may be seen as degradation, and degradation which may actually be due to shoddy stressing because your setting were never stable in the first place.

Cyclops said that, but also that he degraded an ivy at like 1.4vcore - seems really low, considering what Belial did with his (~500 hours of prime @1.5vcore on air and had to drop 100mhz) and considering people like Valgaur running way over 1.4v for folding etc. I don't think there's much solid evidence towards degradation yet, i'd need either a really obvious and big case, or something like a shot passing a stress test and then failing it X months later (because i passed lots of tests at vcore levels that were never really stable or even close)
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