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I5-2500k unstable at 1.4 volts on prime 95?

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February 15, 2013 10:26:10 PM

hey, iv been trying to get my PC stable but cant seem figure out how :/  like i said my i5 2500k is unstable at 1.4 volts, any suggestion at how to reach stability? i get a 0.5 rounding error
a c 78 à CPUs
February 16, 2013 12:18:17 AM

That's a lot of voltage. What frequency are you attempting to run? (and what are your temps)
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February 16, 2013 6:23:53 PM

Z1NONLY said:
That's a lot of voltage. What frequency are you attempting to run? (and what are your temps)


my idles temps are about 30 degrees Celsius and load about 65 to 70, when i was at like 1.30 volts i had abou 57 degree load, so not bad in my opinion, im running the stock frequency, which is 3.3 ghz i believe for the 2500k
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a c 78 à CPUs
February 16, 2013 7:01:12 PM

Your CPU is unstable at stock?
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February 16, 2013 8:15:44 PM

Z1NONLY said:
Your CPU is unstable at stock?



possibly... :/  seems odd, could it be a bad chip? cause if its unstable at stock surely raising it would just make it more unstable, should i contact intel and see if i can get a replacement?
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February 16, 2013 8:30:17 PM

That's totally not right! Are you sure it is your CPU? Because, if it was unstable at 1.4 you would even be able to run it at 1.3... Run some RAM test I bet 10 internets it is a RAM problem :)  It can also be your PSU that can't handle the load or even your motherboard the is struggling to deliver the energy to the CPU (for some reason)
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February 16, 2013 8:42:58 PM

AirSKiller said:
That's totally not right! Are you sure it is your CPU? Because, if it was unstable at 1.4 you would even be able to run it at 1.3... Run some RAM test I bet 10 internets it is a RAM problem :)  It can also be your PSU that can't handle the load or even your motherboard the is struggling to deliver the energy to the CPU (for some reason)

well im about to destroy your bet here man lol, iv ran memtest86+ 24 hours and it past, and iv got an 800 watt psu which should be fine, (i got 1 gtx 660ti) soooo what do you suggest now then?
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a c 78 à CPUs
February 16, 2013 9:15:23 PM

Alex19961130 said:
possibly... :/  seems odd, could it be a bad chip? cause if its unstable at stock surely raising it would just make it more unstable, should i contact intel and see if i can get a replacement?


Stock speed, 1.3v, 70c max temp under full load, no errors in memtest, yet errors in Prime 95.

I would reset my BIOS to factory defaults and retest. If the problem persists, then consider another CPU. (RMA the old one if possible)
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February 16, 2013 9:29:21 PM

Z1NONLY said:
Stock speed, 1.3v, 70c max temp under full load, no errors in memtest, yet errors in Prime 95.

I would reset my BIOS to factory defaults and retest. If the problem persists, then consider another CPU. (RMA the old one if possible)

ok ill give that a try, don't know if this is relevant but i had to reset my bios like twice once cause my computer would just randomly shut off, anyway ill reply again after i get some more prime 95 resaults
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a c 78 à CPUs
February 16, 2013 11:02:01 PM

If your system was shutting down, it's usually a heat issue.

I know your temps are reading good now. Have they ever not been good? Maybe the CPU was damaged from heat?
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February 16, 2013 11:45:44 PM

well i got a haf x and a hyper 212 evo plus setting in the bios to alert me of a cpu fan failure, so it cant be temps, also after i reset the bios it stopped shutting down
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a c 78 à CPUs
February 17, 2013 12:44:45 AM

If you had some sort of "auto overclock" in effect, you could have been running high voltages and temps even with a working 212 installed.

If that were the case, a BIOS reset would "fix" such a problem. Not the only scenario that could have caused the shut downs and BIOS reset fix, but near the top of the list of possibilities.
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February 17, 2013 4:57:37 PM

hmmm well im now running a i7 2600 that i had in another pc and am gonna run prime 95, it it passes ill be sure that the i5 is bad, if it fails, ill suspect my motherboard, but i wasnt aware of having any auto overclock features then (i got a z68xp ud3p, it boot loops sometimes, mostly after i change some hardware)
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February 17, 2013 6:35:22 PM

Alex19961130 said:
well im about to destroy your bet here man lol, iv ran memtest86+ 24 hours and it past, and iv got an 800 watt psu which should be fine, (i got 1 gtx 660ti) soooo what do you suggest now then?


Now I can only see it being a bad chip, which is odd... But possible :/ 
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February 17, 2013 8:24:21 PM

AirSKiller said:
Now I can only see it being a bad chip, which is odd... But possible :/ 


ya thats what im leaning on
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February 20, 2013 1:48:35 PM

well... i can gladly say that i have a good chip :D  apparently my ram voltage was too low :/  even though i was at stock 1.5... but i also dont 'trust' prime95 anymore, casue my cpu was at 1.4 and ram at 1.65 once and it still failed -.- and with intel burn test it passes :) 
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February 20, 2013 1:58:02 PM

Alex19961130 said:
well... i can gladly say that i have a good chip :D  apparently my ram voltage was too low :/  even though i was at stock 1.5... but i also dont 'trust' prime95 anymore, casue my cpu was at 1.4 and ram at 1.65 once and it still failed -.- and with intel burn test it passes :) 


Then you shouldn't trust intel burn test xD If Prime95 doesn't fail, nothing fails... But... If it fails... something isn't good ...
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a b à CPUs
February 20, 2013 4:18:04 PM

Sounds like overheating to me; 70C is a bit much. Go back to stock settings.
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February 20, 2013 7:21:20 PM

gamerk316 said:
Sounds like overheating to me; 70C is a bit much. Go back to stock settings.


70ºC on Prime is fine... I don't see a problem there...
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February 21, 2013 12:43:04 AM

AirSKiller said:
Then you shouldn't trust intel burn test xD If Prime95 doesn't fail, nothing fails... But... If it fails... something isn't good ...

Oh come on don't burst my bubble!i even overclocked! allllllll the way up to 3.4ghz from 3.3! :p 
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February 21, 2013 6:20:25 AM

Alex19961130 said:
Oh come on don't burst my bubble!i even overclocked! allllllll the way up to 3.4ghz from 3.3! :p 


Hahahaha xD But it is rather strange that Prime is falling... Doesn't make alot of sense to me :s
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February 21, 2013 6:21:32 PM

AirSKiller said:
Hahahaha xD But it is rather strange that Prime is falling... Doesn't make alot of sense to me :s

haha ya i know, guess i can give prime another go tonight, ill post the results tommorow.
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