To overclock I leave the CPU clock at default 33 and set the turbo ratio value for each core to 45, set the turbo power limit to 180w, and set the Vcore to 1.355V and leave everything else on auto.
I think this is the best way to go since i get 4.5ghz when a load is on, but when doing stuff like this i'm running at 1.6ghz...
most people seem to oc by bumping the CPU clock ratio but why push the cpu all the time like that? dont you think using this turbo merhod is better ? system also runs cooler......
Intel i5 2500k~4.5Ghz @1.355vmax|giga p67a-ud4-b3 Mobo|2x4gb gskill 1600mhz|evga GTX275ftw GPU|noctua nh-c14 cooler|620w corsair modular PSU|
More about : turbo overclocking
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It doesn't really matter if you have turbo boost up to 45 or bump the CPU clock ratio to 45. It may run at 4.5 Ghz all the time, but it doesn't really get hot unless you are maxing out those cores near 100%. I'm only using about 3% of my CPU at 4.4 Ghz and the general temp is around 38C. But it'll reach upper 50s or low 60s if I have it at full load for a long time.
I had this idea a few days ago, but wouldnt this really cause havoc on the voltages. I thought the main thing on ocing was finding a stable consistent voltage. I'de think this would jump the volts bak and forth but hell I dunno lol. My thought is that it wouldnt be very good to crank past stock volts then back under then up again depending on whats going on. I'm very interested in this now, I hope we find some good info.
ya kno -- i've been stable since march of this year but have been getting random BSODS for the past 2 weeks.....i have another thread going in windows7 general discussion titled 'BSOD' ....maybe somethings up with this method -- i have some testing to do this weekend and will post results .....if this method is the problem why did bsod just start? --- i pray i didnt damage something
i forgot that i had dropped the vid setting to 1.354 to see how low i could set it ....i've readjusted it to 1.36 (what i had originally) and i think i'm stable again ......when stressing cpuz shows vid at 1.06 and steady -- no signs of jumping around ....when idle at 1.6ghz cpuz says about 1.03 but i'm not at home now so i'll retest later using the other tools you mentioned -- but i think i'm stable again
wondafunk said:I tried playing with it alittle and yes the voltage went like a fricken yoyo, 1.25 to 1.28 upto 1.32 and everywhere in between. Maybe board specific but I dont think so.
vid is set to 1.36 and comp is now stable...at 1.6ghz idle core volts = 1.056 at 4.5ghz volts = 1.068 accotding to cpuz ....hwmonitor reports them as 1.06 and 1.07----
the only things that seem to jump around are the individual core speeds according to argus monitor - in argus the core speeds are constantly fluctuating - it does look a little crazy watching the bar chard jump up and down but this is the only tool i've found that shows that kind of activity, those volts hold steady.........in SIW the CPU VCORE shows 1.41 but i'm not sure what voltage that reading is and why it varries from the cpuz and hwmonitor core voltage reading
wow I dont like the whole 1 volt diff there. I'm board, I will install siw and verify for you if I recieve inconsistensies. Sorry man but I got straight numbers all the way across with cpu-z, aida, siw, pcprobe couple others all running 1.288. Pretty sure there is no discrepency in the softwares. I will now try it with turbo enabled.
wondafunk said:wow I dont like the whole 1 volt diff there. I'm board, I will install siw and verify for you if I recieve inconsistensies. Sorry man but I got straight numbers all the way across with cpu-z, aida, siw, pcprobe couple others all running 1.288. Pretty sure there is no discrepency in the softwares. I will now try it with turbo enabled.
i'm gonna try to post images of what i'm talking about ....here we go.....
<a href="http://imageshack.us/photo/my-images/411/f2je.jpg/" target="_blank"><img src="http://img411.imageshack.us/img411/9002/f2je.th.jpg" border="0"/></a>
<a href="http://imageshack.us/photo/my-images/411/f1jf.jpg/" target="_blank"><img src="http://img411.imageshack.us/img411/3878/f1jf.th.jpg" border="0"/></a>
Okay man something definately not right, look at the rest of your values, your 12v is at 7 or so and your 3v is at 5.45 in siw that is. These are not things you can change on the bios not to my knowledge anyways. Are you using the trial siw or the full? I'm going to run the test on turbo now I completely forgot too, im sorry. After words I might have something to compare for you.
I got the same man but I upgraded my bios and recieved no volt jumping, performs like a normal i7 just juiced. My volts stay same in idle and maybe a .1-.2-.3 change when load hits. I think your next step would be to check your system monitoring in the bios. I'm not sure what it would be on your board, mine is under power tab and under hardware monitor. Check to your 3.3 5 and 12v make sure that they are within .1-.2v of the lable. Exp. my 3.3v is 3.25 my 5v is 4.82 and my 12 is 11.82v. We need to make sure siw isnt right, im almost positive its not but cause .9v on the +12v?????lol you shouldnt be able to really do anything period other then well.....nothing that I can think of. Siw is telling us you running on almost 1/12th of main power. Also turn your power management in windows to high performace then check the voltages through windows with multiple monitors after this shut all the others down and check with siw. Usually with software inconsits... you have +.3/-.3 diff with voltages but ive gone through 6-7 programs with SIW and all are pretty dead on, temp is different storey though ive seen +/-4 deg. The heat issue I'm almost certain is your cooler, ive a hc50 mini lcs running a 4ghz in idle at 35-36c when in full load in prime after 1 hour(standard heat test) I'm hitting 85-89 so your temps sound about right to me considering the .5 ghz dif in our overclocks . I'm comfortable with this though cause nothing I play, use, activate or turn hits anywhere near those temps. I pretty sure siw is totally wong but we need to see just how wrong it is. My issue at the moment is that it seems the more I push my cpus vcore it gets cooler. 2days ago I idled at 46, yesterday it was at 40 now im down at the 35-36. I reapplied some artic sil 5 3-4 weeks ago and I've read it gets better the longer it has a chance to cure but I didnt think it would be this good.