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[Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET - Page 749

post #7481 of 10701
Quote:
Originally Posted by ryuji View Post

yea, i have only attempted with one flash drive, maybe its incompatible? the flash drive does have a hardware encrypted volume but its transparent to the OS until you run the utility
Borrowed my nephews flash drive and it works, guess the bios doesnt like the encrypted volume

Yea bios would not be able to read that windows installs drivers for it im sure and bios cant.
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post #7482 of 10701
Quote:
Originally Posted by Bal3Wolf View Post

Yea bios would not be able to read that windows installs drivers for it im sure and bios cant.

Linux sees it as a ordinary volume. maybe when the DOD designed the spec they made sure all the major players supported at least seeing the unencrypted volume
I have a older model but this http://www.encryptx.com/products/encrypted_flash_drives.php
the one i have the volume is hidden from the os entirely and can only be accessed through the tool Warning: Spoiler! (Click to show)
337
strange huh? maybe bios doesnt actually use drivers and does it low level. That hidden folder only has some files for the utility like .hlp and etc, nothing similar size to the contents of the encrypted volume so i know its not just a pgp-like system

i never tested it but they claim that you can fdisk and reformat the drive as a whole and it will repopulate those files after you are done
Edited by ryuji - 2/22/12 at 11:39am
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post #7483 of 10701
well even linux has drivers where bios would be very limited on what is loaded if its not in native fat32 or ntfs probly wont be able to read it.
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post #7484 of 10701
[Hey everyone,

Pretty stoked to be working towards my certification into the club! thumb.gif

I'm looking to do a modest overclock, and I'm running into challenges and am almost there.

Currently set going for 4600MHz.
First I used the mobo preset OC of 4600MHz to see how the system would react. Results were: (Click to show)
Vcore @load: 1.368/1.371, VID 1.406
temps 68/70/69/68
with 19 hrs on blend.
So wanted to first lower the voltages. So now with manual I'm at: (Click to show)
Vcore fixed = 1.352V
VID = 1.3861V
Max temps 65/68/67/66
with 2 hrs blend and 20 mins custom 1792 / 1344 @ 90% Ram
However now trying to tweak with Vcore offset. My BIOS Settings: (Click to show)
Internal PLL Overvoltage = Disabled
Intel SpeedStep = Enabled
Turbo Boost Power Limit = Manual
Short Duration = 250
Long Duration = 250
Additional Turbo Voltage = Auto
CCL = 250
BCLK = 100.0I
Spread Spectrum = Disabled
Power Saving Mode = Disabled
LLC = Level 2 (Ultra or 75% equivalent)
DRAM Voltage = 1.5V
PCH Voltage = Auto (1.059)
CPU PLL voltage = 1.709
VTT = Auto (1.09)
VCCSA = Auto (0.925)

So doing the calculation, my Vcore offset should be -0.033, so used -0.030 per options available

My idle VID was low, like 0.987, so my Vcore at idle would be 0.957-0.962 or something to that affect. I understand if it's lower than 1.000V, that it can cause randome BSoDs.

So I tried changing my LLC to level 3 (50%), with no luck in boosting the VID, and it rebooted in a few seconds once in windows.

Any recommendations on what to tweak to make it stable? I was thinking of reactivating Spread Spectrum, but when I had it enabled before, it brought down my BCLK to 99.8, so it affected my core speed a bit.

I even set my VTT to manual @ stock, and no difference.

Thanks much everyone! redface.gif
Edited by ped5 - 2/22/12 at 1:44pm
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post #7485 of 10701
Quote:
Originally Posted by shad0wfax View Post

Were digressing quite a bit from the Prime95 Stable aspect of this thread, so Im going to hide this response in a spoiler. :) (Click to show)

You have a great CPU that's working wonderfully well with your system. Given that you're operating at lower voltages and temperatures at 5.1 GHz than I am at 4.9 GHz, the below may not apply to you and altering your LLC may not give you the same degree of change (or any change) in performance as I noticed with my system at your current frequencies.......
......Clearly, you have a more capable system than I do, in terms of overclocking headroom, as your system is overclocking at lower voltages and temperatures than mine is, at that frequency. My guess is that you're probably farther away from thermal and current limiting states at 5.1 GHz than I was at 5.0 GHz, so you may not see as drastic of a change as I did. You may not even see any change in performance with LLC changes at all until you are at a higher frequency.

* It's important to note that IBT places an artificially high power and thermal load on a system and that in real-world computing, you will most likely never reach these operating parameters. Perhaps if you are folding -bigadv, performing heavy video encoding, or high-end rendering, you may come close to these values, but it's unlikely, as IBT is a worst-case scenario stress. That being said, the gflop/s efficiency improvements that IBT shows at "ultimate load" may not be present at 100% load in less floating point intensive operations. The reason I placed so much importance on this test is that I can have the confidence of knowing that I have the most efficient overclock possible, even in a worst-case load scenario, and that I will not be limited by any internal throttles under any circumstances in my daily operations.

Shad0wfax, that was a very detailed response. You have more than answered my question. Rep +. Very interesting; at some point when I have time, maybe over spring break, I'll try playing with the LLC. I have exams to study for now and tweaking and testing takes soooo much time...
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post #7486 of 10701
So I have been trying to push my stable 4.6 (4.5 Club submission) to 4.8 and after looking at some 4.8 templates I notice some people using a manual (t.probe) VRM frequency. What is the advantage of this?

By the way I crashed after about 6 hours at 4.8Ghz 1.416V PLL @ 1.6. Temps in the mid 70's at most.
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post #7487 of 10701
Quote:
Originally Posted by Jcoffin1981 View Post

Quote:
Originally Posted by shad0wfax View Post

Were digressing quite a bit from the Prime95 Stable aspect of this thread, so Im going to hide this response in a spoiler. :) (Click to show)

You have a great CPU that's working wonderfully well with your system. Given that you're operating at lower voltages and temperatures at 5.1 GHz than I am at 4.9 GHz, the below may not apply to you and altering your LLC may not give you the same degree of change (or any change) in performance as I noticed with my system at your current frequencies.......
......Clearly, you have a more capable system than I do, in terms of overclocking headroom, as your system is overclocking at lower voltages and temperatures than mine is, at that frequency. My guess is that you're probably farther away from thermal and current limiting states at 5.1 GHz than I was at 5.0 GHz, so you may not see as drastic of a change as I did. You may not even see any change in performance with LLC changes at all until you are at a higher frequency.

* It's important to note that IBT places an artificially high power and thermal load on a system and that in real-world computing, you will most likely never reach these operating parameters. Perhaps if you are folding -bigadv, performing heavy video encoding, or high-end rendering, you may come close to these values, but it's unlikely, as IBT is a worst-case scenario stress. That being said, the gflop/s efficiency improvements that IBT shows at "ultimate load" may not be present at 100% load in less floating point intensive operations. The reason I placed so much importance on this test is that I can have the confidence of knowing that I have the most efficient overclock possible, even in a worst-case load scenario, and that I will not be limited by any internal throttles under any circumstances in my daily operations.

Shad0wfax, that was a very detailed response. You have more than answered my question. Rep +. Very interesting; at some point when I have time, maybe over spring break, I'll try playing with the LLC. I have exams to study for now and tweaking and testing takes soooo much time...
 


Thanks for the +REP, and you're welcome; I'm happy to help and I do tend to provide more detail than necessary. :)

 

For future reading about optimizing for efficiency, check this post out (from this thread):

 

http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/7460#post_16525094

 

It focuses mostly on the offset voltage and having a low minimum/idle voltage, but it also relates some to LLC, and you can see how reducing LLC can increase the efficiency of your overclock without sacrificing stability. I didn't go into detail about how LLC works in the thread, but if you have a working understanding of how LLC works and how it shifts voltages (in a relatively linear fashion) based on VID, you can follow the logic in that post and apply it to LLC. If you don't see the connection, I can provide more details, but I'm guessing that you'll see it. :)

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post #7488 of 10701
My 2500K needs 1.34V LOAD @ 4.5GHz to be P95 BLEND stable (max core temp was 60C in very hot room).

Now I'm testing it @ 4.7GHz w/ 1.432V LOAD (max core temp ws 69C)..

So my question is :

Is 1.432V LOAD too much for safe 24/7 operation on 2500K?


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post #7489 of 10701
Quote:
Originally Posted by KingT View Post

My 2500K needs 1.34V LOAD @ 4.5GHz to be P95 BLEND stable (max core temp was 60C in very hot room).
Now I'm testing it @ 4.7GHz w/ 1.432V LOAD (max core temp ws 69C)..
So my question is :
Is 1.432V LOAD too much for safe 24/7 operation on 2500K?
CHEERS..

No you are fine. Keep it under 75C and under 1.5V.
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post #7490 of 10701
Quote:
Originally Posted by KingT View Post

My 2500K needs 1.34V LOAD @ 4.5GHz to be P95 BLEND stable (max core temp was 60C in very hot room).

Now I'm testing it @ 4.7GHz w/ 1.432V LOAD (max core temp ws 69C)..

So my question is :

Is 1.432V LOAD too much for safe 24/7 operation on 2500K?


CHEERS..



We're somewhat discouraged from getting into voltage/temperature discussions here as far as what is and what is not safe.

 

Intel whitesheets place the maximum VID at 1.520V (VID is not the same as Vcore). You can see VID by opening up Real Temp, and it should be displayed in the small box on the upper right of the main body of the window. If it's not, you can click that box and alternate between VID, Power (Watts), and run time.

 

The short answer to your question is, in my opinion, yes that's too much voltage for that frequency and you should consider backing down.

 

The longer answer in a spoiler, since we're really supposed to avoid lengthy voltage/temperature discussions not related to stability in this thread. (Click to show)

 

I personally feel that 1.432V at load is too high for a 2500K under any circumstances, but is especially high if you're air cooling. I have no idea how you could be at 1.432V and only 69C maximum on air cooling, as you appear to be.

 

If you are at 1.34V at 4.5 GHz (which is a perfectly acceptable clock speed and voltage, by the way) there's no way that you should need as much as 1.43V at 4.7 GHz unless your CPU is hitting a voltage wall at 4.6 or 4.7 GHz. Your CPU may be approaching a voltage wall, and if that's the case, you won't get much higher than 4.7 GHz no matter how much voltage you feed it.

 

Based on your 4.5 GHz voltage, my guess is that you should be able to get a 4.7 GHz tuned at around 1.39 to 1.40 V if you work carefully at it. I can't help but wonder if there's quite a bit more room for efficiency in your OC profile.

 

That being said, I also feel that 80C is the maximum temperature (in a benchmark) that would be acceptable to me. (As my maximum temperatures in every-day use would be < 70C. Given how low your temperatures appear to be even at that high voltage, there's a good possibility that you could continue to increase voltage without having temperature problems.

 

Temperature and voltage can both contribute to the demise of a CPU. Many people look at only one parameter or the other to set their overclocking limits. I like to consider both. 1.416V max and 80C max are my own personal limits.

 

Your limits may vary.

 


Edited by shad0wfax - 2/22/12 at 1:34pm
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G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... SAMSUNG 850 EVO MZ-75E1T0B/AM 2.5" 1TB SATA III... CORSAIR Hydro Series H100i Extreme Performance ... Phanteks Enthoo Luxe Series PH-ES614L_BK Black ... 
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Intel Core i7-5930K Haswell-E 6-Core 3.5GHz LGA... EVGA X99 Classified (151-HE-E999-KR) LGA 2011-v... EVGA 04G-P4-3975-KR GeForce GTX 970 SSC ACX 2.0... EVGA 04G-P4-3975-KR GeForce GTX 970 SSC ACX 2.0... 
RAMHard DriveCoolingCase
G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... SAMSUNG 850 EVO MZ-75E1T0B/AM 2.5" 1TB SATA III... CORSAIR Hydro Series H100i Extreme Performance ... Phanteks Enthoo Luxe Series PH-ES614L_BK Black ... 
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  • [Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET
Overclock.net › Forums › Intel › Intel CPUs › [Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET