Can't overclock i5-6600K past 4.2 GHz

ParkerS

Commendable
Jan 11, 2017
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1,510
I just completed my first PC build a couple of months ago and I have been attempting to overclock the i5-6600K in it lately. I've read numerous overclocking guides and I have attempted to put those into practice, and so far I've been able to get a stable OC at 4.2 GHz (only changing the multiplier, not the BCLK) with a cache ratio of 3.7 GHz at 1.300 volts. I'm watercooling it and so temps have been amazing, topping out at 60-61 C running Prime95 for 6 hours. Performance, considering the clock speed, has been excellent according to Intel XTU (1290 marks). No complaints there.

However, no matter how much voltage I throw at it (I've tried up to 1.450 volts and I'm not comfortable beyond that), I can't get it to reach 4.3. I've tried disabling XMP and raising/lowering the cache ratio, but I haven't been able to get it beyond that. Did I lose the silicon lottery, or am I making some sort of rookie mistake here?

For reference, here's my build: https://pcpartpicker.com/list/BzRdr7

Thanks in advance! I appreciate it.
 
Solution
I thought about that after looking at your system... I checked another link on here about power consumption and I think it will be fine... I do know that when you ramp up the volts it draws a lot more wattage so it might be related...

You could always purchase a higher watt PSU, plug it up and try it out... If you don't get a better OC, then you could just return it... :)

Adam

adamscurr

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Apr 6, 2013
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I think you might have just hit the max of your chip... I think there are reports of higher clocks, but yours seems to like 4.2... I think that is a respectable OC for the chip, just not a magnificent one... :)

Adam
 

ParkerS

Commendable
Jan 11, 2017
2
0
1,510


Fair enough...it wouldn't have anything to do with my PSU only being rated for 500W, would it? It just seems awfully low for a 6600K; most folks can get it to at least 4.4 GHz with no issues whatsoever.
 

adamscurr

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Apr 6, 2013
232
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18,760
I thought about that after looking at your system... I checked another link on here about power consumption and I think it will be fine... I do know that when you ramp up the volts it draws a lot more wattage so it might be related...

You could always purchase a higher watt PSU, plug it up and try it out... If you don't get a better OC, then you could just return it... :)

Adam
 
Solution