E8400/8500 degradation myth possibly busted?

[MosIncredible]

I'm still having the same situation I stated earlier in the thread. My 2nd core (never the 1st) fails at 1hr 18-22 mins every single time I prime. Same clock and voltage ran for 15hrs+ originally. One voltage notch up and it primes for 17+ hrs. What would cause it to fail at the exact same spot every time? Seems odd that only one voltage notch up would cause it to go for an extra 16+ hrs.

[mrcape]

I'm still having the same situation as I stated earlier in the thread. My 2nd core fails at 1hr 18-22 mins every single time I prime. Same clock and voltage ran for 15hrs+ originally. One voltage notch up and it primes for 17+ hrs. What would cause it to fail the exact same spot every time? Seems odd that only one voltage notch up would cause it to do for an extra 16+ hrs.

It's normal for it to fail in the same part of the test. At least it's consistent. just give it a bump or two and call it stable. Or try a different stability test.

[Technophobe]

Those OCCT graphs look great but how do you change the sampling rate? Unless the rate is really, really small, you're going to have to be very lucky to see any overshoot and undershoot spikes / fluctuations.

[CrazyNutz]

Those OCCT graphs look great but how do you change the sampling rate? Unless the rate is really, really small, you're going to have to be very lucky to see any overshoot and undershoot spikes / fluctuations.

Yep, we are aware of that, but if your lucky you can catch one if you are
patient enough, Hah actually I should say if your unlucky you'll catch one

Also I have not seen a vcore spike since I wired in a couple 2200uf capacitors
in my ATX +12v CPU supply line, granted I could be missing
them because of the low sample rate, but I don't think so.

My spikes were caused by the +12v dropping down to 6v momentarily,
this caused the CPU vcore regulation circuitry to react by allowing more
current to flow, when the 12v rail came back up, the vcore regulation
circuitry was not able to react quickly enough to compensate for the new
(normal) voltage (it was still in "allow more current to flow" mode).
In other words vcore regulation circuitry overcompensated for the
supply voltage drop. With the 2 x 2200uf in the supply line this is less likely
to happen, since the caps act like a buffer, holding enough charge to
keep the supply line at the normal +12v even in the event of the supply
line dropping to 6v (for a very small amount of time of course).

[CrazyNutz]

I'm still having the same situation I stated earlier in the thread. My 2nd core (never the 1st) fails at 1hr 18-22 mins every single time I prime. Same clock and voltage ran for 15hrs+ originally. One voltage notch up and it primes for 17+ hrs. What would cause it to fail at the exact same spot every time? Seems odd that only one voltage notch up would cause it to go for an extra 16+ hrs.

Yep, I agree with Mrcape, you just need a little more vcore for that core
to become stable. It's not unlikely for one core to be weaker than the other.
Also failing in the same exact spot is common when a core is unstable.

[sfdmalex]

Just an update.



I'm still Orthos and OCCT stable.


But my temp sensors are random.......