Monday, March 30, 2015

Something Quickly: Why capacitor hour ratings don't matter

The high K capacitors most vendors keep screaming about is just a cash grab. Caps get rated at 105C° life time degrades exponentially with temperatures so if you get 2500 hours at 105C° you'll have a lifespan of 20,000 or more hours at 80C and 60,000 hours at 50C. Just look at all the reference R9 GPUs that got used for mining. None of them have capacitor issues and none of them have caps rated above 5K. So the 10K and 12K caps on motherboards are complete cash grabs. What does matter with caps is the capacity. The more and the bigger caps the VRM has the less noisy the power coming out of it is.

This will be new content that I will post intermittently. It will not replace the regular weekend posts I do so don't worry those will be as inconsistent as ever.
Also don't forget to checkout Silicon Lottery. They sell prebinned CPUs. So if you want you can go and just buy a 5Ghz 4790K from them. No need to worry about getting a bad chips.

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