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--- Risking life, limb and voltage for 5ghz ---

post #1 of 24
Thread Starter 
Hi fellow ethusiasts, I've a few worries on voltage & BIOS settings:

My 2500k is at 5ghz @ 1.41v on good air(Ultra 120 extreme), a tad high for 24/7.

Questions:
  1. Any way to bring Vcore a bit lower?
  2. Are my BIOS settings (in bold) pushing the mobo VRMs too much?(I'm on air cooling).
  3. Will a lower multiplier with overclocked BCLK allow lower Vcore?
    - e.g. -
    50x and 100 BCLK @ 1.41v
    49x and 102 BCLK @ 1.4v
    48x and 104 BCLK @ 1.39v ...possible?
  4. Or is BCLK adjustment, even to 102, *really* a no-go?



This chip also does 4.8ghz @ 1.33v which is good. If I sell this chip, what are my chances of getting another 2500k that does 5ghz @ 1.39v?



-Any advice appreciated!


--- current BIOS settings (ASUS): ---

AI Overclock Tuner: Manual
BLCK Freq: 100.00
Turbo Ratio: Enabled (All Cores)
By All Cores: 50
Internal PLL OverVoltage: Enabled
Mem Freq: 1333mhz
EPU Power Saving: Disabled

Load-Line Calibration: Ultra High
VRM Freq: Manual Set to 350
Phase Control: Extreme
Duty Contorl: Extreme

CPU Current Capability: 120%
CPU voltage: 1.41v
DRAM Voltage: 1.5v
VCCSA Voltage: Auto
VCCIO Voltage: Auto
CPU PLL Voltage: Auto
PCH Voltage: Auto
CPU Spread Spectrum: Disabled
CPU Ratio: Auto
Intel Adaptive Thermal Monitor: Enabled
Intel Virtualization: Disabled
Intel SpeedStep: Enabled
Turbo Mode: Enabled
CPU C1E, C3, C6: Enabled
Edited by overclocktilyerdrop - 3/17/11 at 11:07am
post #2 of 24
Hot hot is the chip? I wouldn't worry about 1.41V unless your temps are crazy. Also what motherboard is this I didn't see it in there. All I could see is that it's an Asus.

I'm not experienced with 2500K's but my guess from what I've seen is that I would not trade this chip in unless you're going to go to a 2600k. Yes you might do better with another 2500K but you might do worse and 4.9 on air isn't bad at all.
     
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post #3 of 24
Your chip does 5ghz on 1.41v call yourself lucky and go buy a newer cooler. You can do 102 on the blck go right ahead.
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post #4 of 24
Quote:
Originally Posted by cl04k3d View Post
Your chip does 5ghz on 1.41v call yourself lucky.
Exactly. I think im at 1.45 for 4.8gig
1.41v is great for 5gig
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post #5 of 24
Thread Starter 
Quote:
Originally Posted by stren View Post
Hot hot is the chip? I wouldn't worry about 1.41V unless your temps are crazy. Also what motherboard is this I didn't see it in there. All I could see is that it's an Asus.
Board is P8P67 Pro. Chip is 77c after Prime95 2hr. Although I did a amutuer job when applying the TIM (took heatsink off to check there wasn't too much TIM, then put heatsink back on without reapplying)... idiot...

I can probably get another 3-4C off load temps just by reapplying TIM properly?


Quote:
Originally Posted by stren View Post
I'm not experienced with 2500K's but my guess from what I've seen is that I would not trade this chip in unless you're going to go to a 2600k.
2600ks usually run hotter due to HT (which I don't need). But do they OC better?
post #6 of 24
Thread Starter 
Quote:
Originally Posted by Lost-boi View Post
Exactly. I think im at 1.45 for 4.8gig
1.41v is great for 5gig
Aren't you worried about damage in the long run at 1.45v? I thought heat(which water cooling eliminates) and electron migration are seperate things?

Even my 1.41v is too high according to:

http://forums.overclockers.co.uk/sho...php?t=18227652



Its too bad getting a really good chip is all luck, even chips from the same batch clock differently. So even getting a "C" batch chip is no gurantee of a great chip. A lot of people would pay more to get a "golden" chip (like 5ghz @ 1.35v). I certainly would.
post #7 of 24
It's "theoretically" too high, but if you have a 1.41 stable chip at 5 ghz, you should consider yourself lucky.

How long have you had the chip and has it maintained its stability without needing more voltage later?
Just dont run it 24/7 at that voltage.
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post #8 of 24
Thread Starter 
Had the chip for a week. Real world apps are rock solid and it passed 2hr prime95 smallFFTs. I know thats not stable stable, but few real world apps stress CPU like Prime95. Does even multithreaded x264 encoding compare to it?

Guess I'll settle for 4.8-4.9ghz for 24/7 then. Hardly slow I know, but I wanted the psychological satisfaction of 5ghz. 4x5 = 20ghz(I know thats completely different to an actual 20ghz single core).

Ah well, such is life I guess : /
Edited by overclocktilyerdrop - 3/17/11 at 10:02pm
post #9 of 24
Disable Internal PLL OverVoltage if you can. May be able to use lower Vcore as a result. I didn't need to enable it until 52+ multipliers.
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post #10 of 24
Thread Starter 
With Internal PLL OverVoltage disabled, 5ghz @ 1.405v failed Prime95 after 20mins. Even if it passes 2hrs at 1.41v, thats same as before and still too high for 24/7.

But thanks to compudaze for your advice. I will now be testing "dissapointing" frequencies like 4.9ghz with IPO disabled and hopefully save voltage.

*sigh*
Edited by overclocktilyerdrop - 3/18/11 at 1:42am
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