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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 755

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Poll expired: Oct 17, 2012  
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    Yes (and I DO have an ASRock motherboard).
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post #7541 of 9531
I didn't notice if this was going on from a new build or all of a sudden. Check your chip seating, bent pins and that you are not using too much of a conductive TIM.
post #7542 of 9531
I read the Asrock z77 Extreme4 thing, and it bothers me very much, because my computer heats up too much at 4.2GHz compared to others (my ambient is around 28-30*C). So I tried setting my offset to -0.005 (the first step in the negative direction), and I opened different monitoring programs. Can you tell me if these voltages are dangerous if my PC is very much affected by the voltage misreading?



I can leave the idle/low-load stability testing to my mom and sister since all they do is go on facebook or youtube.

I reach 90*C once or twice when stress testing with 8-1792 FFT's. These are the lowest temps after reseating 5x (rice/dot method). I noticed that temps reach the highest when stress testing with 8k FFT's, 1792 gives really low temps. Does anyone know what real world applications 8k FFT's are for?
Edited by choLOL - 12/10/13 at 5:52am
post #7543 of 9531
Quote:
Originally Posted by choLOL View Post

I read the Asrock z77 Extreme4 thing, and it bothers me very much, because my computer heats up too much at 4.2GHz compared to others (my ambient is around 28-30*C). So I tried setting my offset to -0.005 (the first step in the negative direction), and I opened different monitoring programs. Can you tell me if these voltages are dangerous if my PC is very much affected by the voltage misreading?



I can leave the idle/low-load stability testing to my mom and sister since all they do is go on facebook or youtube.

I reach 90*C once or twice when stress testing with 8-1792 FFT's. These are the lowest temps after reseating 5x (rice/dot method). I noticed that temps reach the highest when stress testing with 8k FFT's, 1792 gives really low temps. Does anyone know what real world applications 8k FFT's are for?

I have the same board/chip setup. You are fine for temps/voltage, maybe a little warm for my liking, but thats why we do stupid things like attack our CPU's with razorblades, hammers, and water http://www.overclock.net/t/1313179/official-delidded-club You could probably go lower with the negative offset, that seems like a hefty amount of voltage for such a modest overclock.
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post #7544 of 9531
Alright. I'll go lower tomorrow when I have time. Right now, I don't want to go with water, I want to get a bigger case first. biggrin.gif I already have what to buy for the loop on notepad though. lol.

Thanks for the quick reply. thumb.gif

Btw, do you have screenies of your BIOS settings? If you don't, what offset, turbo, and LLC have you set? biggrin.gif I'll read the previous pages
What is the recommended minimum for idle Vcore anyway? CPU-z says I idle with 0.864V. I don't know if that is accurate though.
Temps have gone down so much now, reached 85*C only once for the last hour with 8k-1792k with 4min intervals.
Edited by choLOL - 12/10/13 at 7:17am
post #7545 of 9531
Quote:
Originally Posted by choLOL View Post

Alright. I'll go lower tomorrow when I have time. Right now, I don't want to go with water, I want to get a bigger case first. biggrin.gif I already have what to buy for the loop on notepad though. lol.

Thanks for the quick reply. thumb.gif

Btw, do you have screenies of your BIOS settings? If you don't, what offset, turbo, and LLC have you set? biggrin.gif I'll read the previous pages
What is the recommended minimum for idle Vcore anyway? CPU-z says I idle with 0.864V. I don't know if that is accurate though.
Temps have gone down so much now, reached 85*C only once for the last hour with 8k-1792k with 4min intervals.

for 45x I use:
LLC3
-.065 offset
+.004 turbo
idle: 0.792
load: 1.112

keep in mind that I have an extreme4 so I have the voltage misreporting as well, and I am using direct die cooling with a better than average chip that stays under 45C fully loaded.
Edited by inedenimadam - 12/10/13 at 9:33am
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post #7546 of 9531
i am pretty sure it's the CPU.

although CPU defects aren't common in the consumer world, at least this is the first for me. but they're actually quit common in the IT and enterprise world. out of the roughly 1000 nodes we have in our render farm at work, we often have nodes fail jobs regularly, and those ones that fail regularly would be sent back for replacement and swapped out. since average consumers typically probably won't detect it, since most of the consumer apps aren't stressful enough to determine. but in the enterprise mode where, take our farm, the CPU's are constantly doing renders 24/7. it's quite easy to spot a bad chip.

i've been building and overclocking since the year 2000, i am pretty sure that's what it is. the RAM passed the memtest86. windows is fresh install. and no, there're no bend pins. HDD and SSD are old drives that just got brought from the previous old system, SMART info are all solid as well. temperature stays in the 40's at stock speed during small FFT prime. i am pretty sure that's what it is, i guess we'll find out, if it isn't, ****'s gonna hit the fan.
post #7547 of 9531
Quote:
Originally Posted by choLOL View Post

I read the Asrock z77 Extreme4 thing, and it bothers me very much, because my computer heats up too much at 4.2GHz compared to others (my ambient is around 28-30*C). So I tried setting my offset to -0.005 (the first step in the negative direction), and I opened different monitoring programs. Can you tell me if these voltages are dangerous if my PC is very much affected by the voltage misreading?



I can leave the idle/low-load stability testing to my mom and sister since all they do is go on facebook or youtube.

I reach 90*C once or twice when stress testing with 8-1792 FFT's. These are the lowest temps after reseating 5x (rice/dot method). I noticed that temps reach the highest when stress testing with 8k FFT's, 1792 gives really low temps. Does anyone know what real world applications 8k FFT's are for?

8K FFT's are for testing mainly your CPU and FPU. if you fail during a small FFT like 8K, most likely it's your CPU factor. try upping the Vcore if you fail a small FFT. however, if your temperature is already high, upping the vcore will only make it worse. hence you gotta make sure temperture is moderate before upping the vcore. large FFT doesn't always mean the CPU. since large FFT's need to be loaded and cached from the RAM. if you fail a large FFT, it can mean it's either your RAM or your CPU. always test the small FFT first during overclocking and then run a blend test later to ensure full system stability.
Edited by howzz1854 - 12/10/13 at 10:53am
post #7548 of 9531
So that's what the FFT's are. Thanks. So far my rig hasn't failed a stress test yet. Must be because of the excessive Vcore my board is giving. lol.

Some time in the near future, I'll put up a loop to cool this hot chip. Hopefully, I can get to at least 4.5. Then I'll attack it with a razor, thumb.gif

reps+

Facebook and OCN do a fine job of keeping my chip at 1.6GHz. biggrin.gif


If my chip can idle well with -0.50V offset but can't get to 4.4GHz, can I just raise the turbo voltage and not touch the offset?
Edited by choLOL - 12/12/13 at 12:44am
post #7549 of 9531
ok. here it is.

i got the new chip. it's cooler, faster and requires a lot less voltage to run. the last chip ran 1.2v at stock speed with turbo (3.7ghz), as this one runs 1.1v at stock with turbo 3.7ghz.. due to this, i was able to clock it up to 4.8ghz for a stable 24/7 run.

now here's the deal. i ran the new chip at stock speed and guess what, it failed prime95 V27.9 within an hour. so i was thinking, there's no way!. so i decided to turn turbo off, and without turbo, the chip runs at 3.5ghz 1.02v, as oppose to 3.7ghz 1.1v. and fired up prime again, and this time one of the workers failed within the first 8 mins. so i was baffled.

so 3.7ghz @ 1.1v (with turbo) - Auto vcore, auto everything
3.5ghz @ 1.02 v (without turbo) - auto vcore, auto everything.

then it got me thinking... could it be that intel's stock voltage is too conservative. could it be that the SVID is too conservative. so just for testing purpose, without turbo, i bumped up the voltage to 1.1v just to see if the stock voltage really was too lean. and it turned out Prime95 V27.9 ran 5 hours straight without any workers failing.

so with this knowledge i was able to scale up to 4.8ghz @1.37v.

one question still remain, why is Intel's SVID so lean. do they just not expect people to run extreme burnouts? do they assume people won't be doing hardcore calculations? as the only program in the market today that'll utilize AVX extension to stress the CPU are V27.9 of Prime95, and newest version of IBT. so these are the only two stress programs that really maxes out the procs to the highest temp, and highest FPU stress. do intel just assume that people won't be using AVX extension calculation for crunch? i mean at stock speed? com'on.....

so at the end of the day, i learned that Intel's new Ivy is very lean on stock voltage, depending on what you do. for average joe, one might never run into a problem if all you do is gaming, and run none avx stress tests. but for advanced users, people who do a lot of intense rendering, mathamatical calculation, especially ones that utilize AVX extension, you might even run into issues at stock speed unless you bump up the voltage.

the silver lining of the day, i got a MUCH better chip. one that'll run 4.8ghz daily and load temp remaining at high 60's low 70's.
post #7550 of 9531
Did you switch the Vcore from Auto to Offset+turbo when you overclocked the CPU?
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