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4.4GHz i5-2500k throttling down to 1500MHz?

post #1 of 7
Thread Starter 
This is my first overclock, herd SB's are extremely easy to OC, I jumped to 4.4GHz right off the bat no problems.I haven't done any stress testing yet, but in CPUZ the Core Speed keeps changing, and is showing mostly 1500-1600MHz, but it showed the 4400MHz when I very first logged in.

I'm guessing this is the new "Tubro Mode" on Intel CPUs...so what does this mean? Am I supposed to disable that? Or is it supposed to be doing that?

Plastic Shuriken
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Plastic Shuriken
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post #2 of 7
Leave it on, Sandy Bridge CPU's prefer the power saving features. Theres no need to have your CPU running full force 24/7. Will just wear it down quicker than needs be.

It'll clock up to 4.4ghz whenever your CPU is put under load.
Clevo P650RP6-G
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Clevo P650RP6-G
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post #3 of 7
Thread Starter 
Okay, I see what you're saying. I just wan't sure why it was doing that. My last computer was a Pentium D, so I skipped a generation or two.

One more question though, is an overclock anything past 4.5GHz really meaningless? Another way to put it is, past 4.5GHz, is there really no noticeable performance increase?
Plastic Shuriken
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Plastic Shuriken
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post #4 of 7
Quote:
Originally Posted by EliteGamer83 View Post
Okay, I see what you're saying. I just wan't sure why it was doing that. My last computer was a Pentium D, so I skipped a generation or two.
Haha wow, you'll see a massive improvement with the 2500k
Clevo P650RP6-G
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Clevo P650RP6-G
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post #5 of 7
Quote:
Originally Posted by EliteGamer83 View Post
Okay, I see what you're saying. I just wan't sure why it was doing that. My last computer was a Pentium D, so I skipped a generation or two.

One more question though, is an overclock anything past 4.5GHz really meaningless? Another way to put it is, past 4.5GHz, is there really no noticeable performance increase?
there are always benefits if you have more ghz. going to 4.5 is easy but when going beyond that, the time/work/cooling that you have to put in to gain a few mhz is not worth it for some people. most of the time you won't even notice the difference in performance unless you run benchmarks.
Edited by Nethermir - 7/20/11 at 9:31am
Yep, Aeris died
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Yep, Aeris died
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post #6 of 7
I can guarentee you wont see much of a difference going higher than 4.5Ghz unless youre doing video encoding or other seriously CPU intensive things like that.

Games won't see any benefit either.
Clevo P650RP6-G
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Clevo P650RP6-G
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post #7 of 7
Thread Starter 
I appriciate your help!

By the way, can I have your voltage specs for your ram? I too am trying to reach my 2500k stable to 4.5GHz and I also have Corsair 1600Mhz ram.

I'm trying 1.28v on the CPU now, but I keep crashing when the ram is set to 1600Mhz and 1.5v. If I set the ram to 1333Mhz and auto voltage, the i5 @ 4.5GHz and 1.28v loads up fine (as far as I can see, still haven't ran Prime95)

With the ram at 5.30v and 1600Mhz it lets me log into windows, but the second I start Prime95 I get BSOD. Does this mean the ram needs more voltage?
Edited by EliteGamer83 - 7/20/11 at 9:40am
Plastic Shuriken
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Plastic Shuriken
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Hard DriveHard DriveHard DriveHard Drive
128GB Crucial M4 SSD 1TB Seagate Barracuda 2TB Western Digital Caviar Black 500GB Samsung Spinpoint F3 
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Xigmatek Gaia  Windows 7 Ultimate 64-bit Samsung P2350 XFX PRO550W 
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