i5 4670k bad chip?

iceman1420 · Oct 24, 2014

my setup
i5 4670k
maximus vii hero z97
h100i
cs750m psu

at base clock running prime95 my cpu temps are hitting 80c+ @ 3.8ghz turbo
ai suite says my core voltage is 1.280v when running prime95 at 3.8ghz trying to overclock even slightly i start reaching 90c and bsod turning my voltage down slightly results in bsod basically do i have a dud chip that cant even run stock without overheating as a h100i should be far better than the stock intel cooler.
base clock 80c at 100% load with h100i with stock cooler my cpu would melt

smackers_12 · Oct 24, 2014

They run hot because of the thermal interface between the die and the heat spreader. You just lost the silicon lottery and got a bad chip for overclocking, you could try reseating the cooler and making sure the pump is always at 100% but other than that you cant do anything exept delid the cpu and replace the tim.

MeteorsRaining · Oct 24, 2014

What version of Prime95 are you using? If it's v28.5 then downgrade to 26.6, the temps will lower down. Also, VCore seems high to me, 1.28V for 3.8Ghz, try manually lowering it a bit to about 1.5V or lower, VCore plays a big role in temps.

DelroyMonjo · Oct 24, 2014

Whoaaaa! Why you running core volts @1.28 for that speed Turbo. I have a 4670K on a CM212 air running at 0.96 V Turbo'ed to 4.0 from the BIOS settings and don't exceed 69C on the hardcore P95 test.

i7Baby · Oct 24, 2014

Research first! http://www.overclockers.com/3step-guide-to-overclock-intel-haswell

iceman1420 · Oct 24, 2014

this is default setting on the asus board, voltage is set to auto shows 1.05v on bios but when i run prime95 ai suite shows it bumps right up to 1.28v when its at 100% load running prime95 v28.5

MeteorsRaining · Oct 24, 2014

iceman1420 :

Download and run Prime95 v26.6, your temps will fall by 10-20C.

iceman1420 · Oct 24, 2014

tried prime95 v26.6 with realtemps maximum is now 56c and ai suite says vcore is now 1.168 at 3.8ghz thats alot lower

MeteorsRaining · Oct 24, 2014

simply put (non-technically), v28.5 over-stresses the CPU. Your rig is alright

iceman1420 · Oct 24, 2014

ive bumped upto 4.2ghz at 1.23v if i go upto 4.3ghz it bluescreens before i get into windows if i go below 1.21v it bluescreens before windows or shortly after. 1.24 to 1.3v at 4.3ghz still cnt get into windows my temperature under prime95 are 66c @ 4.2ghz
Is this the maximum my cpu will go or am i doing something wrong??

MeteorsRaining · Oct 24, 2014

You're all good temps wise, bump in 0.05V increments (from 1.23V), and you shall make it with some VCore headroom left. Also, anything under 80C and VCore under 1.35V is fine.

iceman1420 · Oct 24, 2014

did as you said went up in 0.05vs managed to get 4.3ghz at 1.31v tried 4.4ghz went upto 1.36v couldnt get it stable but since i need 1.22v @ 4.2ghz and 1.31v @ 4.3ghz i think i would need 1.4v to reach 4.4ghz
atm ive got 4.3ghz at 1.31v with prime95 runnin max temp is 70c
how high can i increase the voltage too?
shame i spent alot of money on my pc and got stung by chip performance lottery

MeteorsRaining · Oct 24, 2014

Temp wise it's all good (70C is good), but I'd not take it over 1.35V. Have disabled C states?
And tbh, it looks like you got an average chip from the lottery, sorry but that's what I think.

iceman1420 · Oct 24, 2014

thanks for the help and time, it'll do good until broadwell comes out next year or maybe the broadwell refresh thanks again

MeteorsRaining · Oct 24, 2014

4.3GHz is plenty, will not have to worry for some years, definately will be fine till Broadwell.

iceman1420 · Oct 24, 2014

the base 3.8ghz turbo is enough atm and rarely goes over 70% i just wanted to see how far i could push it

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