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post #11 of 23
Yeh there's a "wall" ... it's not a smooth ramp up of voltage. There's a bigger wall (temp-wise) when you try to do over 4.6 or 4.7Ghz on Ivy Bridge due to the way the integrated heatsink (IHS) is attached tot he processor die.
Edited by AlphaC - 4/22/13 at 8:54pm
post #12 of 23
Thread Starter 
Had to set my vcore to 1.2 (1.176 actual) for 4ghz 8+ hr test.

I don't think I got one of those wonder cpus!
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post #13 of 23
Ouch that is bad. Might want to buy and new one and sell this one on CL if it is terrible.
post #14 of 23
Thread Starter 
I'm at 4.2 with 1.25 and passing 1 hr prime. It's not the best over clocker but my temps are < 75' so I am OK with that. Might need to invest in some new fans for my 620 soon.
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post #15 of 23
Thread Starter 
1.250 = 1.225 actual @4.2 so that's not terrible, right? tongue.gif
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post #16 of 23
It's pretty bad especialy if you only did 1 hr prime : you should be able to prime 24+hours if it's that low of an overclock, for what's good / "golden chip" check out the Ivy thread...

Good OCs:
http://www.overclock.net/t/1247869/official-the-ivy-bridge-stable-suicide-club-guides-voltages-temps-bios-templates-inc-spreadsheet

Latest batches:
http://www.overclock.net/t/1368961/newest-batch-of-3570ks-ocing-like-crazy

Good guide from Sin:
http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end
Quote:
Below is a chart that shows the optimal voltage settings which you should aim to better:
post #17 of 23
Thread Starter 
Quote:
Originally Posted by AlphaC View Post

It's pretty bad especialy if you only did 1 hr prime : you should be able to prime 24+hours if it's that low of an overclock

I have CPU X at 42, speed step and turbo off, core voltage at 1.23 (1.216 actual) and LLC at MED. Are there any other settings I should look into to maybe help bring down the voltage?
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post #18 of 23
Only thing I can think of is to:
1.Update BIOs
2. Update motherboard drivers
3. Make sure Memory isn't OCed (not that anything over 1600MHz helps) so that Integrated Memory controller isn't stressed
4. Internal PLL Overvoltage - Enabled shouldn't be a normal thing for 4.2GHZ... but if you really need it you can try that
5. Try tweaking CPU Power Phase Control to a higher setting so more phases are active at all times at the cost of power consumption CPU Power Phase Control (Click to show)
Controls the CPU Power Phase Control to decide if the CPU VRM should reduce the number of active phases (Standard / Optimized / Extreme / Manual Adjust) to allow better power efficiency when the system idles down. Once set to Manual Adjust mode, user can also define how fast the PWM phase should vary with respect to the loading applied on it (Ultra Fast / Fast / Medium / Regular).
Benchmarkreviews' take on Power Phase Control (Click to show)
CPU Power Phase Control -

This setting controls phase switching policies for idle and moderate load. When set to default operation of standard phase switching will be 1 to 4 phase, optimized will default switching operation to 1,2,4,6 onward in increments of 2 until maximum phase count is reached. Extreme will force phase switching to no longer be active and maximum phase array will be enabled at idle and full load. Regardless of defined parameter once under full load phase switching will put maximum phase array under load. The general recommendation for this setting is optimized for most situations and for moderate overclocking as well. This setting generally will provide fast enough response and power delivery up to 4.8GHz. This setting should ideally be matched with considerations for LLC, C States and Vid options (manual or offset). Such as an overclock of 46x should ideally use an offset voltage, with T.Probe loading policy and a phase control setting of optimized or standard. In addition if all C states should be active and LLC should be disabled this would provide a good mix of increase performance but minimized thermal increase (at idle, moderate load and full load) as well as less consistent voltage being supplied to the CPU.

Be advised this setting (when set to extreme) will produce more heat for the VRM and increase total system power consumption depending on which option is selected. It is advised this setting be used only when airflow is present for the VRM heatsink assembly. * Cooler operation of the VRM ensures superior efficiency and maximum current delivery under either setting.

Otherwise it's the chip , so my prior advice of junking it to get a new one is the best bet sadsmiley.gif
Edited by AlphaC - 4/23/13 at 7:03pm
post #19 of 23
Thread Starter 
Quote:
Originally Posted by AlphaC View Post

so my prior advice of junking it to get a new one is the best bet sadsmiley.gif

Don't know many people who would buy it, and I don't have enough Rep to sell it on here. Not many buyers for higher end computer parts where I'm from either.

I'll keep tweaking and see what I can get. I've lowered the voltage a bit more, I'm running at 1.215 (1.192 actual) for about 45 mins and it's stable so far. If Prime crashes or if BSOD I'll raise it just a bit too see if it will make a difference.

Do I really need to prime for 8+ hrs? I usually have 1-2hr game sessions weekly so I'm not sure if I will even push this chip to a full load except for Prime95. Just wondering if it is absolutely necessary.

EDIT:
I have the latest BIOS and I'll double check my drivers but I think they are all up to date. Did a reinstall of windows about a week ago.
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post #20 of 23
OCCT usually gives you faster crashes, it uses Linpack which is more memory intensive as far as I know.

Best of luck tongue.gif

What batch number is it so people on OCN know that it is possibly a bad batch ?

^ I forgot to mention when you make sure your memory isn't OCed, the biggest issue there is timings.
Edited by AlphaC - 4/23/13 at 8:19pm
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