Problems Overclocking i5-4670k with msi z87-g45

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bigcores

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Nov 7, 2013
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So last week i built my new PC (specs below) and wanted to overclock it for Battlefield 4. I spent about a day looking around the net at people who had over clocked with the same CPU and motherboard as me. However, for some reason i cant seem to set it above 4.2ghz without it being really unstable and crashing. i tried 4.3ghz with vcore at 1.3 (which i was told not to go over) and ran pime95. it lasted about 2 minutes before it crashed, which is obviously not stable. what i want to know is why people with the same CPU and Motherboard can overclock as far as 4.7ghz and i cant even be stable on 4.3ghz?

Specs:
CPU: Intel Core i5-4670K 3.4GHz Quad-Core
CPU Cooler: Noctua NH-D14 65.0 CFM
Motherboard: MSI Z87-G45 Gaming ATX LGA1150
Memory: Corsair Vengeance 16GB (2 x 8GB) DDR3-1600
Storage: Samsung 840 Pro Series 256GB 2.5" SSD + Seagate Barracuda 2TB 3.5" 7200RPM
Video Card: EVGA GeForce GTX 770 2GB
Case: Corsair 600T ATX Mid Tower
Case Fan: Noctua NF-F12 PWM 55.0 CFM 120mm
Power Supply: Corsair 650W ATX12V / EPS12V
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer
OS: WIndows 8.1
 
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jpoos

jpoos

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Mar 11, 2011
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1. Not all CPU's are created equally
2. Are you sure you're doing it right? i mean, have you really read the motherboard instructions & fully read all the guides & information you could find on overclocking Haswell? 'd bet you've skimmed through it at best.
 
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bigcores

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Nov 7, 2013
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I am really new to this sorta stuff and i did skim through the manual that came with the motherboard. however, i've followed a few in-depth guides to overclocking this CPU and i just want to know why i cant get it higher than 4.2ghz. most people seem to be able to run stable at 4.4ghz with a vcore of 1.21-1.22. i have to put mine to 1.290 to get it to even survive the boot. you said that all CPU's are not all created equally but this is a massive difference in ghz and it just doesn't seem right to me.
 
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jpoos

jpoos

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Mar 11, 2011
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It can be. Generally the engineering samples sent out to press for review are cherry picked parts intended to give as good a review as possible. These are one of the two exceptions to the normal retail parts that most people buy. The other exception is those few chips unlucky enough to be at the other end of the scale from the parts sent to reviewers - sure they'll pass QC process due to being able to perform default frequencies within voltage tolerances, but will be cursed with limited overclocking potential. These are the exception however, not the rule, and it's more likely that you're overlooking a motherboard setting which will increase stability.
 
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