Overclocking i5 2500k on Asus p8z77-v lx problems

Ranfty

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Jan 17, 2014
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Hello,

I am having some issues regarding overclocking my i5 2500k on a Asus p8z77-v lx motherboard.

My current system specs are:
Arctic Cooling Freezer 7 Pro Rev.2 CPU Cooler
i5 2500k @ 4.2
Asus p8z77-v lx
Corsair cx600m
2 x 4GB corsair vengeance @ 1600
Sapphire r9 280x toxic
Windows 7 64bit

I usually had my CPU overclocked via the TurboV EVO auto tuning provided my Asus just over 4.3ghz. My temps with this overclock were around 28C on idle and 58C on load.

After researching more into overclocking on this motherboard, people recommend not to use this service because of high voltage. So instead I followed a guide and defaulted the system bios then just increased the multiplier up to 42. This has given me the target clock speed of 4.2ghz.

The problem is now with issues within windows. My PC seems to running a bit slower, more noticeable for a drop of 0.1ghz. The temperature of the cpu as I'm typing this is 38C and on load it's goes just above 60C. Am I meant to change my Voltage as well? Am I missing something? I've looked on Google to find a solution but quite a lot of people say you just need to increase the multiplier for a overclock at that speed.

Also, I have 6 case fans, 5 are pwm fans linked up via splitters. I have set up Fan Xpert 2 to control these, they were working fine to the relative temperature and speed before I tried the manual overclock. They still do when the CPU is on idle, but now whenever the CPU has the slightest stress when opening photoshop for example the fans speed up to 100% then go down to their temperature speed once it's finished loading. I have loaded my previous settings and the problem still persists. This isn't really relative to the above but it's just happened since I defaulted the bios but any help will be appreciated.

Should I just revert back to using the auto tuning service?

Thanks in advanced
 

Ranfty

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Jan 17, 2014
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I forgot to mention that when I have used the auto tuning before, it sometimes wouldn't boot and displayed the message 'overclocking failed' then restart with the stock clock of the CPU and would have to run the auto tuning feature again (this has happened about three times).
 

heero yuy

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Jul 25, 2010
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ummm...
is voltage set to auto? it could be that the processor is decideing it wants more power than it needs causing it to hit the higher temperatures (and that auto oc thing could have limited the voltage to something lower than what the processor currently thinks it needs - but more than likely still much more than it needs)