Overclocking X79 & 3930K Help!

Craterloads · 30 Apr 2012 at 22:53

Just a little confused regarding the 3930K and X79 overclocking

Safe Volts? A few places say 1.4V is safe with adequate cooling and others anything over 1.35v will degrade CPU.

LLC - Safe to use? can use lower V Core when using extreme LLC but have read it can be unsafe. On my mobo have settings 1-5 with 1 being the highest. Kills V Droop

Memory - 1600Mhz@ CL9 1.5v or 1866Mhz @ CL11 1.5V?

Currently can get 4.6Ghz with 1.30v with LLC set to 1 (extreme) or 1.32v LLC on 4.

Or 4.8GHz with 1.4v and LLC set to 2

Stock Idle Temps - Low 30s
Stock Load Temps - High 40s (46 43 49 48 etc)

Not sure how much paste to use on CPU, which is a quite large CPU. Remounted a few times, first time too much paste in an x line, 2nd time just a grain of rice but temps are a 1-2c higher now. Will repaste again now with maybe 2 grains of rice size?

Cooled by 540mm tripple radiator and single rad.

GTX 680 temps on loads during heaven benchmark 1080p setting per Heaven thread, peaks at 39c, so cooling is more than adequate.

So wondering is 50c load at stock normal or should it be lower?

Any advice welcome!

Craterloads · 30 Apr 2012 at 23:16

This is the spread i got now with just a single grain of rice size. Judging by the pics i think i grain of rice size is enough but it doesnt seem to be spreading evenly. The top of the CPU doesnt seem to be getting any coverage!

nalla · 1 May 2012 at 14:31

looks similar to mine that does, my idle temps according to core temp are 22 -29 across the cores, with phanecs cooler, only tried oc via easytune 6 so far, its supposed to be running at 4.4 but cpu-z reports still at stock, will give it a go o/c via bios when i get all progs back on.

oh and an answer to your question, the highest i have had temps so far is 42, but not really pushed it yet, just played a game.

ObixConstant · 1 May 2012 at 16:00

http://www.overclock.net/t/1189242/...anations-and-support-for-all-x79-overclockers

I followed this guide some very useful tips, I tried overclocking using a video guide from Asus 1st on youtube but any time I tried intel burn test or prime95 the system would BSOD on me.

I tweaked some of the settings to give me more headroom as suggested in that guide and my system now runs both tests and my system is stable @ 4.8ghz vcore is 1.420 at the moment but if you see that guide you're not really degrading the cpu unless you go past 1.5 if you believe what he states. I'm not too fussed either way as my computer seems to be running fine (using it 12+ hours a day using various applications like after effects and what not) so can't really complain.

I'll be stressing the system later after a days use again to see if it bsod's again otherwise I'll probably settle for a 4.6 overclock just below 1.4 vcore.

Zuban · 1 May 2012 at 16:32

So far i've ended up with my 3930k at 4.6ghz, 125 baseclock and 37 multiplier, 1.4v in the bios, ends up as 1.39v at idle and drops to 1.36 at full load when running prime, i have llc at a medium setting, temps max out at around ~60-65 degrees after a couple hours on prime95 blend test. motherboard is the msi gd65, cooler is xpsc rasa with triple rad and fans around 12-1300 rpm.

I havent yet followed that guide yet so hopefully will be able to refine it and improve, although i'm happy with 4.6 for a 24/7 overclock i'd like to see if i can get it a little further.

stock idle temps are pretty much close to 29-30 degrees
stock temps full load in prime 95 again pretty much bang on 49-51 degrees
room temp is pretty much bang on 20 degrees, and fans all at minimum 600rpm for both.

Craterloads · 2 May 2012 at 00:50

thanks for guide, looks usefull.

Zuban that looks a little high voltage for 4.6Ghz, i can run stablish on 1.31v @ 4.6Ghz and 4.4Ghz on 1.21V.

Thanks for the temps, me being a little ocd would probably remounted the heatskink 20 times thinking ive got a bad mount but my temps are inline with yours.

Just purchased the Intel Performance Tuning Protection Plan for £20, so going to push more volts through it now! Chickened out at 1.47v but since im covered might aswell as muxh as my thermals allow! Paid £400 for my 3930K so that £420 inc the plan which is still £50 less than the majoriy o etailers!

ObixConstant · 2 May 2012 at 09:36

I've had to go down to 4.7ghz with the vcore at 1.410 system crashed using after effects and wouldn't post afterwards with my previous settings or vcore any lower even at 4.7, although most likely because one of my cores is 10 degrees hotter than the others and reacts to prime95 worse than the others by a fair margin, and then my PC just BSOD's on itself.

Even at 4.7 I'm noticing the same thing (temperature spike) I probably haven't tightened one of the screws in tight enough on my H100 or I need to resit the cpu perhaps. That or I shouldn't be using the thermal compound that H100 was pre supplied with ? I heard it was decent so didn't bother but perhaps something I should look into if the above attempts don't work.

My temps are 33 at idle but spike up to 80-81 with prime 95 running the other cores all stay at 71-73 at max temps. Temps stay below 60 when rendering in after effects (20-40 min projects) though and that's my most taxing real world usage until I start blitzing some games in a couple of weeks.

Zuban · 2 May 2012 at 10:05

Craterloads said:
thanks for guide, looks usefull.

Zuban that looks a little high voltage for 4.6Ghz, i can run stablish on 1.31v @ 4.6Ghz and 4.4Ghz on 1.21V.

Thanks for the temps, me being a little ocd would probably remounted the heatskink 20 times thinking ive got a bad mount but my temps are inline with yours.

Just purchased the Intel Performance Tuning Protection Plan for £20, so going to push more volts through it now! Chickened out at 1.47v but since im covered might aswell as muxh as my thermals allow! Paid £400 for my 3930K so that £420 inc the plan which is still £50 less than the majoriy o etailers!

yeah the voltages are higher than many i've seen, it is a pretty lazy overclock tbh just blck, multi and a a bump to the vcore and sa voltage, i'm pretty sure i will be able to drop it once i get into more detail, but i've had some fun along the way with the msi gd65 board, i couldnt even overclock it at first without the multiplier getting stuck at 12x, every bios i've tried since has given different results, the current bios is the best its been for stability but for some reason i cant get past 4.6, can add as much voltage as i like it just wont post at anything higher even though on earlier bios's i've been able to boot into windows at 4.8+. I've thought about changing the board for a different one on multiple occasions but not sure its worth the hassle. I also was having problems with memory, and kept having to drop the speed of the ram way down or i'd get a bsod after a while in prime95, i've since changed the ram for some samsung green ram and that seems to have resolved that, i think i need to start from the beginning again.

if you wouldnt mind what voltages are you using for the sa, qpi/vtt (this is called cpu I/O on my board i think), and pll, i havent got into tweaking these yet.

Craterloads · 2 May 2012 at 10:46

Ok scratching my head here, unless ive gone mad my OC at 4.8GHz requires much less volts today than it did yesterday!?

As i stated above needed 1.41v for it be stablish @ 4.8Ghz yesterday.

Today 1.355v and its stable for a short run @ 4.8Ghz (still lowering untill it get unstable then move it back up again)

Strange?

Only thing thats different is ive redone my wiring today. I had all accessories powered off a single molex cable from the PSU for the last few days as was just testing temporarily.

1 x 1TB HDD, 1 x SSD, 1 x D5 Pump, 1 x LED strip, 1 x DVD Drive and Fan controller with 4 x fans all on a single molex cable from PSU

Now i have the the Fan controller on seperate molex cable, hardrives on sata power cables, and pump on a seperate molex cable direct from the PSU.

Anyone experience this before?

Craterloads · 2 May 2012 at 11:42

down to 1.325v @ 4.8Ghz, 10min stable so far prime small ftt's

dont get this at all

Yaayuh! · 2 May 2012 at 12:18

I'm placing an order later this week for an X79 + 3930K setup, i will be posting how i get on. My goal is at least 4.6GHz below 1.4v, easily done by the looks of things. But would like to end up as high as 4.8GHz at under 1.4v and under 80c.

Gotta love forum community overclock help

Craterloads · 2 May 2012 at 13:05

ahh blue screen

pushing back up to 1.335v @ 4.8GHz - LLC set to extreme (1)

Temps peaking at 72c (hottest core, rest in mid 60s) with fans set to 600rpm, which is basically as good as silent.

ambient 22c

water temp 30.7c

Zuban · 5 May 2012 at 00:39

Craterloads said:
Ok scratching my head here, unless ive gone mad my OC at 4.8GHz requires much less volts today than it did yesterday!?

As i stated above needed 1.41v for it be stablish @ 4.8Ghz yesterday.

Today 1.355v and its stable for a short run @ 4.8Ghz (still lowering untill it get unstable then move it back up again)

Strange?

Only thing thats different is ive redone my wiring today. I had all accessories powered off a single molex cable from the PSU for the last few days as was just testing temporarily.

1 x 1TB HDD, 1 x SSD, 1 x D5 Pump, 1 x LED strip, 1 x DVD Drive and Fan controller with 4 x fans all on a single molex cable from PSU

Now i have the the Fan controller on seperate molex cable, hardrives on sata power cables, and pump on a seperate molex cable direct from the PSU.

Anyone experience this before?

this made me think about the fact i had my pc plugged into a extension bar along with a monitor etc, so i moved it to its own wall socket tonight and immediatly i have been able to adjust my overclock and have dropped down to 1.34v for 4.6ghz, and i've been able to drop the memory voltage, prime95 stable so far. Next i think i need to check my wiring!

ObixConstant · 5 May 2012 at 01:14

Running a stable 4.7 @ 1.410 Vcore using an extension with 5 other devices connected to it, so may try plugging it straight into the wall if that genuinely makes a difference it'd be nice to lower my vcore to under 1.4 or keep it there but with a 4.8 overclock again.

Yaayuh! · 7 May 2012 at 18:34

Not as cool as i would like. Temperatures lower by about 10c if i take the side off of my case, this NZXT H2 of mine is rammed full now. Next investment will be a powerful 140mm fan for the top exhaust.

Zuban · 8 May 2012 at 10:41

am now up to 4.8ghz @ 1.44 volts, finding it very sensitive to memory speed, which i keep having to drop down to 1333, and also the sa voltage can need a voltage bump, i feel almost like my vcore could be lower if i could get the right memory settings but i'm still pretty new to this. Any tips? my memory is 16gb of samsung green ram, i havent adjusted any of the memory timings.

edgedemon · 8 May 2012 at 10:52

I can get 4.6 stable @1.412V, I want to have a go at slowly lowering the vcore, but don't know what settings to change to try this?

Yaayuh! · 8 May 2012 at 10:59

Zuban said:
am now up to 4.8ghz @ 1.44 volts, finding it very sensitive to memory speed, which i keep having to drop down to 1333, and also the sa voltage can need a voltage bump, i feel almost like my vcore could be lower if i could get the right memory settings but i'm still pretty new to this. Any tips? my memory is 16gb of samsung green ram, i havent adjusted any of the memory timings.

FYI, I had to increase the BCLK strap to 125 from 100 and drop the memory multiplier to get 4.5 stable. I think SB-E struggles with high memory multipliers when Overclocking maybe? Either way, 125 as a base to work on seems easier.

eyetrip · 8 May 2012 at 11:16

Not sure it's a Sandy-E problem - am running 45 multi on mine, with memory up at 2133, and sure I could get it to 2400 if I tried.

There are likely certain things you will need to tweak. For example, on the memory timings page on my Formula there is a setting called (I think) Rampage Tweak, which has options fort auto/mode1/mode2.

Mode 2 is supposedly supposed to help out with overclocking, however I get far better results on mode 1. You need to look up detailed BIOS options for your board and try different combinations. There is plenty to do on these boards besides always upping the voltages.

Zuban · 8 May 2012 at 11:31

eyetrip said:
Not sure it's a Sandy-E problem - am running 45 multi on mine, with memory up at 2133, and sure I could get it to 2400 if I tried.

There are likely certain things you will need to tweak. For example, on the memory timings page on my Formula there is a setting called (I think) Rampage Tweak, which has options fort auto/mode1/mode2.

Mode 2 is supposedly supposed to help out with overclocking, however I get far better results on mode 1. You need to look up detailed BIOS options for your board and try different combinations. There is plenty to do on these boards besides always upping the voltages.

yup the more i'm learning about each setting the better overclock i acheive, i was stuck at 4.6, with 125bclk and x37 multi, now i'm at 100bclk and x48 multi. Its quite rewarding if a little frustrating at times.

what settings are you guys setting the sa voltage too? (memory controller, imc on some boards)

I read in the sandybridge-e guide that using extreme llc isnt good, but if i use setting 0 for llc on my board, which is the most extreme, when i check with a multimeter from the boards check points, the voltage is exactly what i set in the bios at all times, so is this ok, the example in the guide showed the voltage to be higher than the bios setting when using extreme llc but mine is exactly what i set it to. I've had far better success with setting 0.