WillyK wrote:
Thanks Korth! So what you're saying is that OC could be almost as durable as a stock setup, as long as you don't take the OC to the limit. Logical, but how far can you take it without too much risk?
First of course: overclock or undervolt is out of spec, not operating within rated design parameters, no promises. No piece of silicon is perfect, no two pieces have exactly the same quirks and flaws. You don't know how fast or how long they can run overclocks until you push them to the threshold. The only guarantee is the manufacturer's guarantee, only 3 years and only when operated completely within rated spec.
The big killers of semiconductor components are thermal stress and electrical stress. It turns out that most damage is actually chemistry-based, galvanic and thermal conditions shift equilibriums, accelerate the separation of metals, the breakdown of crystal lattices, the corrosion or erosion of materials from within - this damage is molecular-scale, inevitable, gradual, and utterly irreversible. Some stress tests and burn ins and benchmark brag-n-swag is fine, even expected - it's the sustained long-term day-to-day punishment which adds up, driving a little beyond the speed limit is a lot less damaging than flooring the engine into the red at every intersection.
So use robust cooling to keep things as cool as possible, always well below rated maximum temps. And remember that the CPU package might report 80C while the CPU internals are being baked in a smelting pot.
Use highest-quality PSU, quality not quantity, because smoother and tighter and steadier regulation means fewer spikes and ripples and fluctuations get passed downstream to the mainboard VRMs, which in turn passes cleaner gentler power downstream to the CPU (and other stuff).
I always "graph" out my overclocking parameters, clocks vs volts vs temps, it's a curve which goes exponential at some point, some people push up to the maximum "stable" extreme, I prefer more modest overclocks somewhere in the "sweet spot" where performance gains outweigh energy losses.
Yes, I spend "too much" on my PSU and cooling, but then again I don't have to replace any hardware in my system for many years at a time. Other guys buy "proper-sized" PSUs and coolers, and they push their clocks more aggressively because rawr moar faster must mean moar teh pwnage (even if you actually suck at playing games) ... but they end with system instabilities and finicky timings and constant voltage tweaking and dead parts within a couple years.
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[/Korth]