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4.5ghz stabled? I5-2500k

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April 5, 2012 6:06:53 AM

4.5ghz stable? I5-2500k
Before anything here are my specs:

Case: Corsair Carbide 500r White
MOBO: Asus P8Z68-V PRO
CPU: i5 2500K
GPU: GTX 680
RAM: 2x4GB 1600 G.Skill
PSU: Corsair HX750
SSD: Crucial M4 128GB
HDD: Western Digital Caviar Black 1TB
Optical Drive: Asus
Keyboard: Microsoft Sidewider X4
Mouse: Logitech G9x
Speakers: 5.1 Logitech X-540
CPU Cooler: Cooler Master Hyper 212 Evo
Monitor: Asus VS248
Wireless Adapter: Rosewill RNX-N250PCe

I'm currently running Prime95 and it's been 6 Hours with no errors. I have the VCore set at 1.35 and the value jumps anywhere from 1.336 to 1.352 nothing higher.

CPUID is showing max temps of 62, 68, 68, 69, and package max at 72
Min temps are 33, 30, 30, 36, and package min 34

I'm wondering how much longer should I actually run this before declaring "stable" for 24/7 usage. I have intelburntest but haven't used it as people recommend Prime95 for stability.

My temps are staying anywhere from 60 to mid 60s at full load.

This is my first time overclocking and I've been at it since yesterday. What do you guys think over all? Temps? VCore? Stable?

More about : 5ghz stabled 2500k

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April 5, 2012 7:33:32 AM

Mine is at 4.5ghz with 1.28vcore. You should try lowering it.

We have almost the same system specs. (actually, pretty dang close!) Try it with 1.3 first, then go down from there.
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April 5, 2012 10:58:53 AM

gary1 said:
Mine is at 4.5ghz with 1.28vcore. You should try lowering it.

We have almost the same system specs. (actually, pretty dang close!) Try it with 1.3 first, then go down from there.

4.5Ghz at 1.28v? I don't think so. Try In-place FFTs test or BF3, you'll see!
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April 5, 2012 3:20:52 PM

Actually I didnt notice but it's set at 1.32 Vcore I tried 1.315 Vcore and ended up with a BSOD soon after. What do your settings look like in BIOS?

I'm gonna see if I post some pictures of my settings.
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April 5, 2012 3:42:34 PM

Sonny73N said:
4.5Ghz at 1.28v? I don't think so. Try In-place FFTs test or BF3, you'll see!


Posts like those make me wanna punch people through the wire...

Mine's @ 1.281V on a P67 since day ONE (3 months ago) for my 4.5GHz OC and it's been running perfectly. Max package of 61C on NH-D14.

You'll rarely see CPUs act the same for the same vCore on an OC, so you're unlucky to have one that needs more voltages and runs hotter; if it's stable & doesn't overheat, it's all good... no use being a douche.
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April 5, 2012 3:51:04 PM

Truth.

I was running 4.2ghz at 1.24 but then it decided it need more juice once I went up to 4.3 and 4.5 became a Vcore hog.
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April 5, 2012 4:13:06 PM

i set 4.5ghz with everything set to auto.. stable enough.. on thermalright hr-02 macho, temps 42-70 (idle/load). Bsod once while playing l4d2 after a week,, but i dont think it was because ovrclock.. i guess something related to my old hdd (ide converted to sata), seems going to fail soon or bad converter,, just dont care.

bottom line, 4.5ghz is pretty easy, even on auto.
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April 5, 2012 4:17:10 PM

atikkur said:
i set 4.5ghz with everything set to auto.. stable enough.. on thermalright hr-02 macho, temps 42-70 (idle/load). Bsod once while playing l4d2 after a week,, but i dont think it was because ovrclock.. i guess something related to my old hdd (ide converted to sata), seems going to fail soon or bad converter,, just dont care.

bottom line, 4.5ghz is pretty easy, even on auto.


If your speaking about Auto VCore you must be nuts. I tried auto just to see what would happen and it spiked up to 1.52 when all that VCore isn't even necessary.
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April 5, 2012 4:36:28 PM

aRodr1guez said:
If your speaking about Auto VCore you must be nuts. I tried auto just to see what would happen and it spiked up to 1.52 when all that VCore isn't even necessary.


woow, no.. i never seen it. it only goes to 1.312.. as far as i monitored, prime95, cinebench,, and daily applications, and gaming. as i pretty much on browsing internet, and light work, i guess auto is the best, it doesnt broke the system (sleep, powersaving, idle, etc).. but you got the power when needed. oh,, ya, my mobo is msi-p67 gd65.
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April 6, 2012 3:45:33 AM

Any suggestions on my settings? What might i be able to change to bring down the voltage but stay at 4.5? I idle at 1.32 I'd really like to bring that lower.
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April 6, 2012 4:06:05 AM

Sonny73N said:
4.5Ghz at 1.28v? I don't think so. Try In-place FFTs test or BF3, you'll see!


Would you like me to run Prime for you sir?
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April 6, 2012 4:13:56 AM

gary1 said:
Would you like me to run Prime for you sir?


What do your settings look like in BIOS? considering we have the same mobo maybe that can help me out.
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April 6, 2012 10:51:40 AM

gary1 said:
Would you like me to run Prime for you sir?

At first I had my 2500k (Jan 2012) OCed to 4.5GHz @1.28v and ran 4 hours in P95 blend test just fine. But then it crashed in BF3 and IntelBurntest only an hour or so. After researching and tweaking it for a couple month, it came to stable at ~1.325v with 77C at max load. Now I only keep it at 4Ghz with Vcore 1.165v. No crash or BSOD and it only get to 64C max load.

May be you have the golden chip out of a million, who knows? But I have my doubt.

I5-2500k @4Ghz
Gigabyte UD3P
Zalman 9500 HSF
Evga 560ti FPB 1000/2000/2300Mhz 1.075v
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April 6, 2012 11:08:02 AM

dechy said:
Posts like those make me wanna punch people through the wire...

Mine's @ 1.281V on a P67 since day ONE (3 months ago) for my 4.5GHz OC and it's been running perfectly. Max package of 61C on NH-D14.

You'll rarely see CPUs act the same for the same vCore on an OC, so you're unlucky to have one that needs more voltages and runs hotter; if it's stable & doesn't overheat, it's all good... no use being a douche.

Hot temper and violent people is usually dumbass. And that's another reason I don't believe what you said about your OC because I don't think you know how to properly do it.
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April 6, 2012 11:16:45 AM

just to stir things up even more, i can hit 4.5 on stock volts. though i got a crash a little while ago playing bf3, so i put an extra .028 through it. now its smooth as butter.

weirdly though, as soon as i try to hit anything higher, i need LOADS of extra voltage. gotta go above 1.51 to get it to 5ghz.

lesson. all chips are different.
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April 6, 2012 4:58:34 PM

aRodr1guez said:
What do your settings look like in BIOS? considering we have the same mobo maybe that can help me out.


Remember, even though we have the same mobo and chip, doesn't mean we'll have the same results.

Running Prime now, see you in 24 hours Sonny!
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April 7, 2012 8:28:46 AM

gary1 said:
Remember, even though we have the same mobo and chip, doesn't mean we'll have the same results.

Running Prime now, see you in 24 hours Sonny!


I just recently started this build beginning of this year. I'd replaced/exchanged every component in my system at least twice beside the CPU. It may be not the best but I think I have a pretty good chip. I believe every chip is different performance wise. May be I could get there with a better MB and a better PSU. I have the Corsair HX850 which is ok but the board is not. Like someone in this forum said OCing is a frustrating journey (something like that), I ended up accepting the current value it has just to be happy so I can enjoy my new system. I hope you all can be happy as well unless you have nothing better to tweak your brains. Cheers.
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April 11, 2012 2:09:55 AM

Sonny73N said:
Hot temper and violent people is usually dumbass. And that's another reason I don't believe what you said about your OC because I don't think you know how to properly do it.


Douches only get a reality check when they hit a wall... and sadly that wall usually implies violence. I'm not a violent person, but if a douche pushes the correct buttons, that can change.

With that said, and knowing your type, you're probably going to discredit a screen capture BUT, for the sake of other people that want information pertinent to this topic, 1.280 is possible (and even common) for 4.5GHz.





UEFI is set manually to 1.280, first picture is vdroop is action @ 1.272, which it stays at about 75% of the time when I prime or play CPU intensive games. 1.280 is about 20% of the time, the other 2 voltages are peaks (rare min/max) 1.264 (probably HEAVY vdroop when package is @ 95W or above) and 1.288 when the CPU is doing nothing (pretty odd why it would overvolt on idle... but whatever heh)

Pretty apparent from the icons on my desktop what I play, a lot of BF3, some Tribes now and WoW when I feel nostalgic (lol). Finished ME3, Amalur, etc... + lots of steam games (Just Cause 2/Warhammer, etc...).

So, for others that want to hear it, see it and try it; 1.280 most certainly works for 4.5GHz! Bought the system in November (already over 4 months :o  ), OC'ed it first day, primed the living *** out of it, play CPU intensive games every single night... conclusion: the 2500K is the best overclocking CPU since my crazy Celeron 300A! lol :D 
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May 1, 2012 8:32:33 PM

I can also confirm that 4.5Ghz @ 1.28v is possible as that is my current setup with the 2500k. I had to make sure my LLC was nearly maxed out to make sure vdroop didn't push it too much below 1.28, without LLC it was dipping to 1.25 and started to BSOD. With LLC on, I see the voltage range go from 1.280 to 1.284 and ran Prime95 for 8 hours no errors or problems, max temp @ 72c on an H60.
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May 1, 2012 9:11:32 PM

Just something to add here: Load voltage at 1.280V is perfectly attainable @ 4.5 (and from what I've seen, is just about normal). That's my load voltage in Prime 95 @ 4.5 too. My idle voltage (if I use the High Performance power profile in Windows, to keep it from clocking down) has to be at 1.336V to be stable though (ie. not crash while surfing the web). It only drops to 1.280V because of Vdroop, though, so that's understandable.

FWIW, LLC can only be set to Enabled/Disabled/Auto with my board, and anything other than Disabled causes voltage to be much higher than I know it needs for some reason.
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