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[Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET - Page 960

post #9591 of 10702
Well I think so too but it's posible I'm having issues when making my vCore go up. For example I can get my CPU stable @4.8Ghz with ~1.280 but the max load temps in Prime and IBT go even to 75c or more. Some may think this is not too bad but I'm just wondering isn't it supposed to be lesser at this voltage, because it's pretty much low ?
The case is TT RX-I with 4x200mm fans and one 120mm on the back. CPU cooler Noctua NH-U12P SE2 which is a pretty nice performer, but I just don't seem to understand this issue...
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post #9592 of 10702
From the screenshot looks like your max temp is at 65. I wouldn't worry about that. IBT always burns your chip higher to around 10c hotter than prime but you will never see such heat in normal use so I wouldn't put too much focus on that either.

An important question is what is your ambient temperature where the computer is?
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post #9593 of 10702
During the night maybe 17-18c and during the day around 21-22c ...At first I thought that every chip has it's own heat production for each of the vCore values, but then who knows.
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post #9594 of 10702
Quote:
Originally Posted by DoooX View Post

During the night maybe 17-18c and during the day around 21-22c ...At first I thought that every chip has it's own heat production for each of the vCore values, but then who knows.

I think it is a bit too hot. The U12 is a pretty good cooler and 1.280v shouldn't boost your temps to over 75c in such low ambient unless you have terrible airflow inside your case. That or the healsink wasn't installed property.
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post #9595 of 10702
Well maybe it is high but on the other hand It's just maximum total stress from IBT which makes the temps go abnormally higher compared to everyday usage. When I use it in gaming etc. they never go over 55c ... which seems to be ok, but when testing that's what happens.
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post #9596 of 10702
Well of course if you're happy with the clock and temps, and is likely to just stick with them then that's perfectly fine as those volts and temps will not cause your system any harm what so ever.

However if you ever wish to push higher and test the true potential of your chip then you would want to maximise the cooling efficiency of your parts, that's when you really need to go down to the details.
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post #9597 of 10702

A note on using XMP mode.

 

I use XMP only to find the mfg fail safe settings of a given kit. I will enable it once to see those specs/timings to record them on paper for the purpose of setting them up manually in bios to eliminate timings and Vdimm settings as a possible reason for a failed overclock. I have found when overclocking to the limits of my hardware, for what ever reason, XMP fails where maunal setting have success. I'm not sure why this is but I know for example my current OC of 4.8 with all other settings the same except XMP engaged it fails with manual settings/timings it runs stable. As I have experienced this same anomaly with other builds I have come to the conclusion it's best not to use the XMP profile when pushing to extremes. Furthermore XMP is utterly useless when populating all 4 dimm slots on Sandy Bridge platforms because it always defaults to a lower than usable stable Vdimm. Not only is higher vccio/sa voltage needed to boost the IMC but typically in my experiences so too is a higher Vdimm requirement again when pushing to the upper limits of a proc. I don't believe this is exclusive to a specific motherboard, proc or memory kit as I have seen this happen with multiple builds. Of course YMMV just like some can hit a stable OC at substantially lower vcore than others with the same gear there are always variables in terms of what is achievable from one user to another but for me XMP works well when not pushing the limits, for that I recommend manual settings.

 

It is not my goal here to turn this in to a debate. It's one of those things that has to many variables to produce a clear winner, right or wrong. It is my humble opinion, so take from it what you will

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post #9598 of 10702
Quote:
Originally Posted by owcraftsman View Post

A note on using XMP mode.

I use XMP only to find the mfg fail safe settings of a given kit. I will enable it once to see those specs/timings to record them on paper for the purpose of setting them up manually in bios to eliminate timings and Vdimm settings as a possible reason for a failed overclock. I have found when overclocking to the limits of my hardware, for what ever reason, XMP fails where maunal setting have success. I'm not sure why this is but I know for example my current OC of 4.8 with all other settings the same except XMP engaged it fails with manual settings/timings it runs stable. As I have experienced this same anomaly with other builds I have come to the conclusion it's best not to use the XMP profile when pushing to extremes. Furthermore XMP is utterly useless when populating all 4 dimm slots on Sandy Bridge platforms because it always defaults to a lower than usable stable Vdimm. Not only is higher vccio/sa voltage needed to boost the IMC but typically in my experiences so too is a higher Vdimm requirement again when pushing to the upper limits of a proc. I don't believe this is exclusive to a specific motherboard, proc or memory kit as I have seen this happen with multiple builds. Of course YMMV just like some can hit a stable OC at substantially lower vcore than others with the same gear there are always variables in terms of what is achievable from one user to another but for me XMP works well when not pushing the limits, for that I recommend manual settings.

It is not my goal here to turn this in to a debate. It's one of those things that has to many variables to produce a clear winner, right or wrong. It is my humble opinion, so take from it what you will

I can confirm that XMP usually fails when the 4 RAM slots are populated.

Do you mean that with the 4 slots populated, it is required to increased Vdimm and vccio/sa voltage to achieve higher CPU overlclocks?
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post #9599 of 10702
and i would love to get an idea of what kind of increases are typical for both vccio and vccsa. i posted in the "My Samsung DDR3 4 x 4 GB Overclocking Experience " thread but got no response. that was over 2 weeks ago.
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w00t
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post #9600 of 10702
Quote:
Originally Posted by Sashimi View Post

Well of course if you're happy with the clock and temps, and is likely to just stick with them then that's perfectly fine as those volts and temps will not cause your system any harm what so ever.
However if you ever wish to push higher and test the true potential of your chip then you would want to maximise the cooling efficiency of your parts, that's when you really need to go down to the details.
What do you think, would a H100 Corsair perform really better than Noctua NH-D14 for example or this is not the case ? I've seen some results where people used water cooling and they got worse results than some Air cooled CPU's. I was thinking about changing this for some water cooling option but I am not sure if the performance will be better 100% positive if I do the change... redface.gif
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Winter Husky
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