CPU refuses to clock up after about 1-2 days, NOT temperature

i run my 2960xm at 45x multiplier aka 4500mhz and it works FINE, but after a day or 2, sometimes more, it refuses to clock up beyond 39x multiplier until I restart the computer, its really annoying, anyone ever ran into something like this? after restart works fine again

 

Are you launching with Throttlestop by any chance?

 

no

 

offtopic but can you please post a screenshot of your overclock settings both of the BIOS and XTU? surprising how you can go so high with a 2960MX CPU I cannot even get a 4.2GHz stable with my 4940MX. When I say stable, I mean it has to pass the wPRIME Stability test using all threads (8). Not just be able to use the system in Windows, I mean under extreme load situations

 

The two are quite different architectures, the Sandy bridge chips did tend to clock very well but of course at 4.2ghz you are out performing his 4.5ghz sandy.

 

can you please explain how? BTW I said I can't even get a stable overclock of 4.2 GHz on all cores....it will run fine in normal Windows and stuff but not in the stress test in wPRIME on all cores...... I refuse to use an overclock that is not 100% stable.....

but how can a Hotwell CPU outperform a Sandy Bridge at a lower clock?

 

Because it has a higher IPC (instructions per clock) and goes back to the whole MHz is not everything.

 

Thanks for the explanation, rep added

 

No problem, Intel tends to be adding 5% IPC each generation at the moment.

 

Why not just turn it off when you are not using it? There is probably a simple explanation for what is happening, but if it takes 2 or more days to surface it's probably not worth burning a lot of calories on solving it unless you are using it as a server and require 99.9% uptime. Leaving it running all the time will simply shorten the life of components. Unless you are in extremely harsh frozen environment where the bitter cold causes damage from being turned off, it's always best to turn off a machine when it is not in use. It will run better and last longer if you only turn it on when you are ready to use it.

With a few one-off exceptions, Sandy and Ivy XM, K and X CPUs generally all overclock better than their Haswell equivalent. At similar clock speeds, Haswell definitely performs better for reasons previously stated, but their efficiency starts to lose value and meaningfulness when they cannot keep pace with a Sandy or Ivy CPU capable of running an extra 500MHz or higher overclock speeds without burning up. Thermal management complications and inconsistent binning quality add yet another undesirable dimension to Haswell processors, especially the 4th Generation Core i7 models. If you get really lucky in the silicon lottery, an unlocked Haswell can be awesome. Most of the time they are not.

 

just a quick correction its 40x multiplier that it gets stuck on, like clockwork after about 1 or 2 days at most
running games it has no problems staying at 45x multiplier on all 4 cores the whole time, im not quite sure what is the reason for this but i have an SSD so restart doesn't take too long but it's simply ANNOYING

 

Could be a firmware bug, what bios version are you running?