3770K O/C not stable anymore

Born_2_Kill_83 · 29 Sep 2013 at 19:16

Ive had my 3770K running @4.8 with 1.350V for the last year or so, nice and prime95 stable using a Noctua cooler maxing 90c in the hottest parts of prime.

While burning a DVD and running some virus checking software I got BSOD today. Ran prime95 to check things, noticed my temps are higher than before and I crashed after 20 mins.

What could cause this all of a sudden, has the chip worn and I need to lower the clocks? I was at the limit of volts and temp previously so cannot increase either of these to stabilize again.

Strange any ideas?

swiftmetal · 29 Sep 2013 at 19:23

You could always try re seating the CPU cooler and adding some new tim.

Something Else · 29 Sep 2013 at 19:38

well if temps are suddenly an issue which I would imagine they are seeing as you hit 90!! Then reseat the cooler or get a better cooler.

90 is far to close to the thermal cut off

Telecaster · 29 Sep 2013 at 19:57

I know there's some head room left there, but 90 is high!

I wouldn't have run it at that in the first place TBH.

Born_2_Kill_83 · 30 Sep 2013 at 09:12

Will resit tonight, Ive also noticed 1 or 2 workers in prime95 are lagging behind quite bad.

swiftmetal · 30 Sep 2013 at 09:31

do yourself a favour and don't run prime because it gives you unrealistic temps and does not prove anything.

All you need to see if your pc is stable is to use it normally and that is it no need for prime at all.

wazza300 · 30 Sep 2013 at 11:01

look in event viewer/custom view it will list what it crashed on

might need more cpu voltage

different bios versions also affect how much voltage is needed to be stable sometimes (just incase you updated the bios recently)

murah · 30 Sep 2013 at 14:29

Born_2_Kill_83 said:
Will resit tonight, Ive also noticed 1 or 2 workers in prime95 are lagging behind quite bad.

completely normal, I was worried about this recently but it turns out that your PC's OS needs to do things in the back ground, thus some cores will lag behind as they have to maintain your GUI etc

murah · 30 Sep 2013 at 14:34

swiftmetal said:
do yourself a favour and don't run prime because it gives you unrealistic temps and does not prove anything.

All you need to see if your pc is stable is to use it normally and that is it no need for prime at all.

This goes against every sensible bit of information I know of PC's. Prime95 Will stress your PC more than gaming or just using the PC normally in a day to day basis,Putting it under much higher loads than gaming/video encoding. Thus logically if you pass prime your stable for every day use.

You Want to get unrealistic temps as well! I know from experience that if my prime is at 75c then there is no way I will hit that while gaming etc so its a great indicator.

Honestly though the prime95 method has been used for years, With good reason. If you pass an hour of prime with 0 errors/bsod then (Unless you are folding@home) you are good to go from my experience

swiftmetal · 30 Sep 2013 at 14:51

murah said:
This goes against every sensible bit of information I know of PC's. Prime95 Will stress your PC more than gaming or just using the PC normally in a day to day basis,Putting it under much higher loads than gaming/video encoding. Thus logically if you pass prime your stable for every day use.

You Want to get unrealistic temps as well! I know from experience that if my prime is at 75c then there is no way I will hit that while gaming etc so its a great indicator.

Honestly though the prime95 method has been used for years, With good reason. If you pass an hour of prime with 0 errors/bsod then (Unless you are folding@home) you are good to go from my experience

It is a bad way to stress your pc as you limit your over clock because of unrealistic temps.

Don't belive me that is fine but even ocuk's resident oc guru 8 pack he says it is and I quote junk but hey what does he know right.

murah · 30 Sep 2013 at 18:45

swiftmetal said:
It is a bad way to stress your pc as you limit your over clock because of unrealistic temps.

Don't belive me that is fine but even ocuk's resident oc guru 8 pack he says it is and I quote junk but hey what does he know right.

Dont quote something you cant adequately explain yourself

Or at least back up with a quote from 8 pack, As i know he is an Extreme overclocker his methods could be more tuned towards the extreme rather than the average user

Born_2_Kill_83 · 30 Sep 2013 at 19:53

Re-seated CPU cooler, hasn't made any difference to temps.
Ive played around in the bios and things seem to be more stable even with the high temps, Prime95 ran for 20mins then Prime95 stopped responding, I take it this mean it isn't stable. However no crashes in games or benchmarking.

almighty15 · 30 Sep 2013 at 20:13

Drop the multiplier down by x1 and try Prime95 again...... See if that makes a difference.

Born_2_Kill_83 · 30 Sep 2013 at 20:38

OK done that multiplier now at 47, temps near enough the same maybe 2c lower, prime95 passed 20 minutes without a problem and workers are near perfect sync. However the second set of tests in prime (blend) took my CPU temps over 100 and I stopped the test.

Hyburnate · 30 Sep 2013 at 20:55

Honestly, I wouldn't be surprised if running it at 90 constantly has done it some damage and therefore made it unstable.

Born_2_Kill_83 · 30 Sep 2013 at 20:58

It doesn't run at 90 constantly, idle is low 30's, on the desktop and loading programs/app's I see low 40's, gaming I see 60/70's depending on the game. 90% of prime95 is in the mid 80's, it just peeks around 90c a couple of times during a test.

almighty15 · 30 Sep 2013 at 21:10

I vote for the high temps taking it tole on the chip...

Born_2_Kill_83 · 30 Sep 2013 at 21:25

I really don't think 90c max in prime95 for 30 mins is that high for a hot chip like a 3770k, but correct me if I'm wrong.

Currently running 4.6 with 1.285V nice a stable so far with max temp hitting 85c..question is how much decrease in performance can I expect in gaming between 4.8 and 4.6?

kaku · 1 Oct 2013 at 00:20

It's possible for a machine to be able to complete Prime but still crash or have problems when gaming. Prime hammers your CPU with very specific patterns of usage; it's nothing like using the machine for actual gaming.

Sure it might give you a general idea of whether the system is stable or not, but you'll never know if it's completely stable without using it normally for a while.

wazza300 · 1 Oct 2013 at 01:18

prime95 is gentle compared to linx and intel burn test

you won't notice much if any loss @ 4.6ghz

idk if your delidded op?