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post #3141 of 3792
hey guys i have been running my 3570k at 4.5 ghz at 1.338 vcore for quite a while with no stability issue and tempes within 75 degrees. I was thinking about changing my mobo if it could help me get higher overclocks like upto 5ghz at lesser vcore and temps. Will it work or my chip just isnt a good one no matter which board i use.
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post #3142 of 3792
Quote:
Originally Posted by quark004 View Post

hey guys i have been running my 3570k at 4.5 ghz at 1.338 vcore for quite a while with no stability issue and tempes within 75 degrees. I was thinking about changing my mobo if it could help me get higher overclocks like upto 5ghz at lesser vcore and temps. Will it work or my chip just isnt a good one no matter which board i use.
There are some boards that make overclocking easier, and give more consistent voltage, but no mobo will make a chip significantly better. My first chip needed 1.33 for 4.5 also, it was just one that did not like overclocking. It is the unfortunate part of the silicone lottery. Some will sell their chips and go buy another one in hopes of finding a better overclocker.
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post #3143 of 3792
So is there anything wrong with running up to 1.6v as a max 24/7 overclock (and 24 hour p95 testing that voltatge, obviously)? I see people say 1.5v, 1.45v, is the max, but if no one has degraded their IB yet, including the few who run up to 1.6v, why not? as long as temps are okay of course, and I delidded my ivy, I'm sure you'd have to delid to even consider doing up to 1.6v.
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post #3144 of 3792
Quote:
Originally Posted by Belial View Post

So is there anything wrong with running up to 1.6v as a max 24/7 overclock (and 24 hour p95 testing that voltatge, obviously)? I see people say 1.5v, 1.45v, is the max, but if no one has degraded their IB yet, including the few who run up to 1.6v, why not? as long as temps are okay of course, and I delidded my ivy, I'm sure you'd have to delid to even consider doing up to 1.6v.
I don't think anyone knows for sure yet. Run it a 1.6v 24/7 for 6 months or a year, and see if you need more voltage to stay stable at the same level. If you are willing to take the risk, I would be interested in the results.
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post #3145 of 3792
K I think I'll go for 5ghz then. i think for me 5ghz will be around 1.45-1.55v for 24 hour stable, which is why I'm so curious. might be under 1.5v but i dont know for sure.
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post #3146 of 3792
So, I've got my i7-3770k running at 4.6GHz with 1.35V, stable after 24h of prime95. No BSODs, temps are under 75C (using h100i), but when I run games I get kicked to the windows desktop screen after a few minutes, with no errors, no BSODs, nothing getting stuck, just the game closing for no apparent reason. If I go down to 4.4GHz with 1.3V the problem with the games goes away. I'm just wondering what could cause this? I also have 2x4GB Corsair Vengeance 1866 (default xmp, default timings, so no ram overclock) all running on a GA-Z77-D3H with a Nexus 650W PSU 80+ certified.
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post #3147 of 3792
^ It's entirely possible that you might be unstable even after passing 24 hours of prime95, but that's not too likely. Try a few other stress testing programs, just for a few minutes, see if they bring up the instability that 24 hours of p95 doesn't....

But maybe your PSU is the problem. Try a PSU test (gpu+psu test at same time, ie run prime95 then run furmark).

XMP, by the way, is a factory overclock. Did you run prime95 with it on xmp?

Fill out your sig rig, but my guess your PSU is the problem. On what little information you've given. I've never even heard of the nexus 650 nor can I find anything on google, so I'm pretty sure you have a low quality PSU. Wattage means nothing, and just like wattage, efficiency ratings mean nothing and are also bull-malarky (ie if they aren't fudged, they are run in unrealistic settings). Passing an efficiency test is like passing the SAT when you get to do it at home. Quality >>> Quantity. Just because your PSU can do 650w (which it most likely can't do on the 12v rail, it probably means it has most of it's power on rails that are never used and aren't going to be stressed at all), doesn't mean it can handle a transient load to that wattage well.
Edited by Belial - 3/6/13 at 9:19am
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post #3148 of 3792
Quote:
Originally Posted by devilpriest View Post

So, I've got my i7-3770k running at 4.6GHz with 1.35V, stable after 24h of prime95. No BSODs, temps are under 75C (using h100i), but when I run games I get kicked to the windows desktop screen after a few minutes, with no errors, no BSODs, nothing getting stuck, just the game closing for no apparent reason. If I go down to 4.4GHz with 1.3V the problem with the games goes away. I'm just wondering what could cause this? I also have 2x4GB Corsair Vengeance 1866 (default xmp, default timings, so no ram overclock) all running on a GA-Z77-D3H with a Nexus 650W PSU 80+ certified.

It's stability issues, up vcore by .02-.03 then try it
Quote:
Originally Posted by Belial View Post

^ It's entirely possible that you might be unstable even after passing 24 hours of prime95, but that's not too likely. Try a few other stress testing programs, just for a few minutes, see if they bring up the instability that 24 hours of p95 doesn't....

But maybe your PSU is the problem. Try a PSU test (gpu+psu test at same time, ie run prime95 then run furmark).

XMP, by the way, is a factory overclock. Did you run prime95 with it on xmp?

Fill out your sig rig, but my guess your PSU is the problem. On what little information you've given. I've never even heard of the nexus 650 nor can I find anything on google, so I'm pretty sure you have a low quality PSU. Wattage means nothing, and just like wattage, efficiency ratings mean nothing and are also bull-malarky (ie if they aren't fudged, they are run in unrealistic settings). Passing an efficiency test is like passing the SAT when you get to do it at home. Quality >>> Quantity. Just because your PSU can do 650w (which it most likely can't do on the 12v rail, it probably means it has most of it's power on rails that are never used and aren't going to be stressed at all), doesn't mean it can handle a transient load to that wattage well.

It's not a psu issue at all. If the PSU can demand full load specs and no fluxtuations in the draw during CPUZ and priming then there isn't any issues at all. Unless he has a big beefy GPU then I'd say it's PSU purely because when IB gets OC'ed the power draw can get up there and some high end cards will over do it on the PSU. but even if it was a PSU issue your computer would turn off instead of saying.... I'll just crash a program.... doesn't work that way. just up the vcore and it should work. This is why I don't like prime95 for stability.
post #3149 of 3792
Quote:
Originally Posted by Belial View Post

^ It's entirely possible that you might be unstable even after passing 24 hours of prime95, but that's not too likely. Try a few other stress testing programs, just for a few minutes, see if they bring up the instability that 24 hours of p95 doesn't....

But maybe your PSU is the problem. Try a PSU test (gpu+psu test at same time, ie run prime95 then run furmark).

XMP, by the way, is a factory overclock. Did you run prime95 with it on xmp?

Fill out your sig rig, but my guess your PSU is the problem. On what little information you've given. I've never even heard of the nexus 650 nor can I find anything on google, so I'm pretty sure you have a low quality PSU. Wattage means nothing, and just like wattage, efficiency ratings mean nothing and are also bull-malarky (ie if they aren't fudged, they are run in unrealistic settings). Passing an efficiency test is like passing the SAT when you get to do it at home. Quality >>> Quantity. Just because your PSU can do 650w (which it most likely can't do on the 12v rail, it probably means it has most of it's power on rails that are never used and aren't going to be stressed at all), doesn't mean it can handle a transient load to that wattage well.

Thank you for your answer. I made a mistake, my PSU is a 630W Nexus http://www.hardwaresecrets.com/article/859 . I filled out my rig sig.I ran prime with XMP on.

Quote:
Originally Posted by Valgaur View Post

It's stability issues, up vcore by .02-.03 then try it
It's not a psu issue at all. If the PSU can demand full load specs and no fluxtuations in the draw during CPUZ and priming then there isn't any issues at all. Unless he has a big beefy GPU then I'd say it's PSU purely because when IB gets OC'ed the power draw can get up there and some high end cards will over do it on the PSU. but even if it was a PSU issue your computer would turn off instead of saying.... I'll just crash a program.... doesn't work that way. just up the vcore and it should work. This is why I don't like prime95 for stability.

Thanks for answering; I would not suspect my PSU, maybe my MB as I had issues getting my old I5-3570K past 4.5GHz without a 1.4V.... I don't believe in prime myself either, it isn't always relevant to what you actually do with your PC. I also use wPrime, LinX and IBT.

Also, forgot to mention, my GPU only takes-up about 150-200W of power.
Also, HT is enabled; I've tested my system with it disabled and enabled and it seemed to work fine. I don't think this could be an issue, could it?
Edited by devilpriest - 3/6/13 at 12:03pm
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post #3150 of 3792
Quote:
It's not a psu issue at all. If the PSU can demand full load specs and no fluxtuations in the draw during CPUZ and priming then there isn't any issues at all. Unless he has a big beefy GPU then I'd say it's PSU purely because when IB gets OC'ed the power draw can get up there and some high end cards will over do it on the PSU. but even if it was a PSU issue your computer would turn off instead of saying.... I'll just crash a program.... doesn't work that way. just up the vcore and it should work. This is why I don't like prime95 for stability.

I've had more than one faulty PSU that could prime for 30+ hours no problem, but would have strange crashes during certain programs. Turned out to be a faulty PSU, as evident when the problem went away when I changed my PSU, and because it'd consistently fail PSU testing.

Just a cpu test alone isn't going to draw much power, but if you have a bad voltage regulator on a power supply, it might not handle a higher wattage load. It's not a heavy load on the PSU at all to go to to full load on just the cpu during prime95 once and stay at ~30% utilization for 24 hours, but it might be a lot for it to go to 60-80% utilization all at once. His problems sounded consistent with the PSU problems I've had.

I don't know how you can say that if it can do prime95 then there's clearly no psu issue... the guy didn't give us much information to work with (not saying that there is much more that could be known), so I think it's poor advice on your part to say so surely it's not the PSU. Has nothing to do with how beefy his GPU is either, my faulty PSU was able to prime for 30+ hours on 4.8ghz@1.4v but only had problems when I pushed the vcore above 1.45v or did CPU+GPU tests at the same time. My computer also crashed anytime I opened certain games.

Prime95 is great for CPU and system stability and testing your RAM and CPU. It doesn't tell you if your motherboard, dimm slots, or PSU is faulty, so I don't know how you can bag on prime95 for not testing what it isn't designed to test.
Quote:
Also, forgot to mention, my GPU only takes-up about 150-200W of power.

It has nothing to do with how much power your GPU pulls, it has everything to do with how your PSU handles power loads. As I said, quality > quantity. Just because your PSU can handle 600w, does not mean it can handle a quick change from idle to 400w all at once. It's a lot more taxing on a PSU to go from idle to max load on both cpu and gpu, than it is to slowly ramp up the power from 100w to 600w incrementally. A lower quality or faulty PSU isn't going to be able to handle such a change in wattage.

Likewise, just as the psu can be the source of a lot of power related problems, so can the motherboard's vrm.
Quote:
Also, HT is enabled; I've tested my system with it disabled and enabled and it seemed to work fine. I don't think this could be an issue, could it?

Not being able to run HT could mean your CPU is at fault, could be power related - your motherboard, your PSU.

It's still very possible you have a faulty PSU. Run a PSU test, takes all of 5 minutes. OCCT has a dedicated PSU test, which is just it's CPU and GPU stress test at the same time. Run any CPU+GPU test at the same time for a psu test.

Not saying your PSU is definitely the cause, but your issues sound a lot like a faulty PSU. It would be absurd to simply not test your PSU in this instance...

It could just be stability issues, 24 hours of prime95 does not guarantee stability but it does come very close to it, so it's odd you are having such issues. I would be interested to see if raising vcore slightly fixed your problem, but if it didn't, that'd definitely be yet another indicator of faulty power (either motherboard VRM or psu) as your power system can handle the CPU load of 1.35v but nothing higher than that.
Edited by Belial - 3/6/13 at 12:44pm
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