Originally Posted by Antipathy
Hey guys, I was hoping you guys would be able to help give me a little direction here. I just finished a new build, so time to start pushing it. I've read through all the guides, I'm just trying to figure out where I want to start. I was just playing around with multipliers and voltages trying to figure out what my first goal is. Since I am on air cooling for now, I don't want to go too crazy until I know how this chip responds.
Warning: Spoiler! (Click to show)
I was basically just testing to see how low a voltage I could set at a given multiplier in order to be able to successfully boot into Windows in order to gauge a starting point. Here is what I found so far:
PLL Overvoltage Disabled
x47 - 1.26v (BIOS), 1.264v (CPU-z)
x48 - 1.29v (BIOS), 1.288-1.296v (CPU-z)
x49 - 1.32v (BIOS), 1.32v (CPU-z)
PLL Overvoltage Enabled
x50 - 1.35v (BIOS), 1.352v (CPU-z)
x51 - 1.395v (BIOS), 1.4v (CPU-z)
I didn't want to try anything over that, though I was quite surprised with how linearly the voltage requirement increased all the way up x51.
Now, I understand, that there's no telling where stable voltages might end up, but I was still somewhat encouraged by being able to login to Windows at a x51 multiplier.
I haven't changed much, so far, and here is the pertinent info:
Memory is locked at 1600 Mhz @ 1.5v, 9-9-9-24
EPU Power Saving - Disabled
LLC - Ultra High
VRM Frequency - 350
Phase Control - Extreme
Duty Control - Extreme
CPU Current Capability - 140%
VCCIO Voltage - Auto
PLL Voltage - Auto
CPU Spread Spectrum - Auto
C3 - Enabled
C6 - Enabled
So the next step is to pick a multiplier as a goal and try to nail down sweet spots for VCCIO and PLL voltages, correct? What would be a good place to start? x47? x48?
Thanks in advance.
I would pick a multiplier like 45 to being with and then slowly increase that as you find the desired voltage for that particular overclock. Obviously temperatures are important, therefore considering the type of cooling you have and how high you would like to go is totally up to you. I would recommend reading the OP to get a better understanding of max voltages and temperatures.
Originally Posted by rippir
4.8GHz @ + .030 Offset
I set out wanting to hit 4.8+ and I made it... My temps were just over my personal threshold (75c) but after seeing some of the crazy temps people are putting these chips through I'm OK with that.
Thanks to munaim1 for posting detailed guides
Thanks to Tom Thumb for posting BIOS screens
Now its time to OC my GTX570 Warning: Spoiler! (Click to show)
Look's great, I'll update your entry in a moment. Thank you yet again for participating
Originally Posted by AeroZ
Ok. I'm now stable at 4.6ghz with 1.336-1.352v. I'd like to get to 4.7ghz but i'm not sure if it's safe to go close to 1.4v. Any thoughts? Temps should be fine tho with my new d14.
Please read the OP, more specifically the *~*MAX SAFE VOLTAGE & TEMPS*~* section then come to your decision
Originally Posted by Scorpion667
Heads up, my chip degraded at 1.45v load, used to run 5ghz 24/7 locked multi (no eist), trying to see if it settled bumped it up to 1.48v see if it holds. I know 4.8ghz needs +0.02v more for stability so I might get lucky and it just needs 1.48... do chips usually settle after they degrade or does it degrade faster?
If it degrades still I gotta buy 5 more 2500k's to bin sigh at least it's fast to bin them
Can I just ask what is it that you do with your rig and was it running 5ghz from when you submitted to the club back in April? Roughly how many hours of prime did you run? Did you run IBT with AVX at all?
Just want a little more info if you don't mind
Originally Posted by saiyanzzrage
Finally got myself up and running with my asrock z68 extreme4 gen3 board and a 2500k..
went to microcenter and bought a set of corsair vengeance ddr3 1600 2x4gb sticks, and now all is well, so the g.skill sniper 1866 sticks i got from newegg were bad
I am new to intel overclocking, and dont really have a set overclock in mind, I want to see how far I can go and keep it simple
I notice alot of vdroop on this board, so right now I am at level 2 llc (at level 3 llc the vcore was still dropping between 1.208 and 1.216), and 1.25v vcore, and dropped the pll voltage to 1.75 and running at 4.5 right now
using the quick and dirty sandybridge oc guide in the sandy stable club, i ran the 1344 an 1792 primes and so far so good
i disabled spread spectrum, because it was causing the bclk to be 99.7, so now that it is off i am at 100
temps during the 1344 and 1792 runs (15 minutes each) were 57-59 across all cores, so I definitley have some wiggle room
I am going to play a little more tomorrow and then finally do an overnight prime run when the temps start getting too high
Am i pretty much on the right track? the llc pretty much just tries keeps the vcore as close to what it is set at in the bios right?
I also have c1e, c3 and c6 enabled for now..if i remember correctly, these only really need to be disabled if you are using offset?
The temperature would stay low for those FFT's because it ain't the ones that generate the heat, usually it's the small FFT's like 8k or 12k etc. Sounds like you're on the right track, yeah that's the reason behind using LLC - to minimize the droop under load and again you're correct, C3 and C6 should be disabled when using offset, you can leave C1E and Speedstep on enabled for both manual and offset.For those that missed it, choose your sig and wear it proudly, Copy and Paste whichever you want Warning: Spoiler! (Click to show)
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