my i5 2500k is it a bu, chip or is there hope?

Bramill

Bramill

Bramill

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16 Sep 2009
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Hi, i've got an asrock extreme 4 gen 3 board and i clocked it to 4.4 using the turbo setting fine, then i tried 4.6 with everything on auto as before and it won't boot, does this mean my chip will never get to 4.6 or is there still hope if i do it manually?
 
dont use the auto overclock function as it will use too much voltage , learn how to manually overclock but be very carefull with voltages and temperatures
 
I've spent a few hours messing around mainly with offset voltages and I cant get it to boot using a 45x multiplier. I tried a 44x multiplier with a -0.01v offset and it wasn't stable. So i've just reverted back to use the turbo mode.

I'm scared to increase the volts too much as im using a z68 board and i understand cpu-z doesn't give an accurate vcore reading for z68 boards yet, is that correct?
 
i have heard a couple of stories about CPU-Z and z68 boards. But i couldnt say for sure.

I really am not sure why you cannot overclock anymore, i can get mine all the way upto 4.9ghz with my watercooling on a msi p67 board.

keep at it bud.
 
Before using offset voltages, first try and get it stable using manual voltage. Set it so something like 1.35v and see if that works, also leave the base clock at 100mhz
 
I have the same CPU and mobo as yourself and I too couldn't get past 4.4 on turbo. 4.6 on turbo wouldn't boot. I tried a number of different manual configurations with no joy. I enabled "Advanced Turbo 50" and it gave me 4.8ghz straight away. I ran Prime95 for about 9 hours with those auto settings before the system rebooted itself. There was probably a blue screen just prior to that but I was asleep at the time.

Before the Prime95 test I played Crysis 2 with maxed out detail and high res textures for 3 hours with no problems. Temps were no more than 52c. For some inexplicable reason the system froze every time I tried to play Tiger Woods 2008! That game is not exactly known for pushing PC's to the limit.

Advanced turbo 50 increased the cpu volts to around 1.42-1.44. Real Temp showed a max temp of 72c, which is on the high side considering the cooler I was using (a Noctua NH-D14).

The fact that I was able to run Prime95 for 9 hours before a problem occurred makes me think that it's possible to attain 4.6 - 4.8 with the correct manual settings.

Hopefully some bright spark out there will be able to help us both out.
 
if its anything like the asus boards an auto oc won't change the llc, phase etc... settings, pretty sure there is a guide on here for the asrock z68 boards which should help you both out for manual settings. never trust an auto oc, mine gave me 103x50 @ 1.6v! obviously very unsafe.
72c at those voltages is about right for an nh-d14.
 
I tried auto OC on my asus P8P67 board and it immediately was unstable with the BCLK at 103 which as you will read most people recommend leaving at 100 not to mention the 1.43v it was putting into it. so much for ASUS testing "100s" of configs for "safe" overclocks!!!
 
hey Davefran. o tried those settings, now and i even increased the offset to +0.07V, I didn't want to go any further and it still won't boot. I noticed I don't have the voltage overide option, have you updated your bios?
 
You may have to enable Internal PLL Overvoltage, I don't nedd it until I go over 4.8GHz.
I think the voltage overide option is to do with the IGP, have you got that disabled.
 
Davefran said:
You may have to enable Internal PLL Overvoltage, I don't nedd it until I go over 4.8GHz.
I think the voltage overide option is to do with the IGP, have you got that disabled.
Click to expand...

I tried with enable Internal PLL and still it won't boot, I left IGP as it is on auto.

Also, im using a noctua NH-D14, at 4.4GHz my temps at load linger around 55-60 C and never go beyond 60 C.
 
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