I recently had a theory that 'chip degradation' - as in lower stable max overclocks - may not necessarily be due to the CPU itself, although chips that have experienced long-term high borderline throttle temps or excess voltage will degrade for the reason Chrispy_ said. My theory is that there could be degradation in motherboard components or other non-CPU components that cause a 'ragged edge' overclock to become unstable. That might apply less to Haswell with integrated VRMs, but could still apply because the motherboard still has to do some stuff, but for non-integrated VRM CPUs it could certainly be the case.
Anyway, yes there are clear cases of 'degradation' - whether it's the CPU itself or something else, it does happen.
M M Original,
The reason I asked was since Haswell has tiny integrated VRMs that are getting much hotter then big 8, 10, 12 + phase motherboard VRM designs been really the only chips I have really heard anything of degrading with overclocks and I think it would make degrading apply more to Haswell because of those tiny integrated VRM's. I for one have not heard of any degrading on Sandy/Ivy chips that use the big 8, 10, 12 + phase motherboard VRM designs. That is why I asked about Sandy/Ivy bridge and Haswell. Ivy bridge chips run pretty much as hot as Haswell but have not heard of any degrading of Ivy...only Haswell with it built in VRM design that is great for notebooks and laptops and other low power high performance chips. But it has no place on the desktop where it only saves a few watts of power.
it make me wonder if Haswell-E will have built in voltage regulators?? I guess we will find out soon enough.
As for overclocking for me, I do do a decent amount of encoding. Overclocking gaming wise BF3 multiplayer it definitely helps. Along with pushing 2 fairly heavy duty 770s in SLI depending on the game.
But the main reason for needing my overclock is The Smooth Video Program or SVP player addon for MPC-HC and pot player etc that converts 24, 25 30 FPS videos to your monitors refresh rate on the fly up to 120 even 144fps I think. But is 60fps in my case. It can bring my 2600k at 4635mhz to its knees running a 1920-800 or 1920-1080 video file when you turn up the anti artifacting masking features and other video improvement tweaks. You might say/ask why do you need all those tweaks and it is a fair question. I need those tweaks cause I am on a huge 55" tv that we are sitting 4-6ft from depending on if I pull the tv off the wall 3 ft with its wall mount. But the improvement in video quality is amazing along with the smoothness from going from 24 to 60 fps is pretty dramatic. On a smaller monitor/TV you do not notice a lot of stuff because the pixels are so much smaller unless you are 12" away from the screen.
2600k@4848mhz @1.4v CM Nepton40XL 16gb Ram 2x EVGA GTX770 4gb Classified cards in SLI@1280mhz Stock boost on a GAP67-UD4-B3, SBlaster Z powered by TX-850 PSU pushing a 34" LG 21/9 3440-1440 IPS panel. Pieced together 2.1 sound system