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Originally Posted by Aquaplant

Why do you overclock the CPU on a gaming box that has as old GPU as the 275 GTX? Anyhow, the older generation GPU, combined with overvolted CPU, would explain the 375W power draw, but only when gaming tough.

On a side note, I hope you never use those fans at their 100% duty cycle, because I'd think the case would more or less take off, not to mention the noise. Even ~1500 RPM sounds like a hurricane, at least when I was still using that same case. Still, it's good airflow at the cost of silence, but that's a tradeoff I'm no longer willing to take.

Hmm, I bought the fast fans with the intention of using pwm, and they are quite near silent, keeping my pc cool even when running at full load. I can stand about 1m away and barely hear it. In my experience, super fast fans at like 40% duty cycle are just as quiet as those "silent" fans but move much more air at a given speed because they're made not to be crazy loud even when at full speed.

the GTX275 isn't old, it still holds out against the upper midrange of the current generation, even at 1920x1080. I would upgrade for DX11 but I'm not made of money. It took me like 3 years of saving to get my current hardware. And yes, I have no doubt that my GPU is a bottleneck for gaming. However, this isn't just a gaming box. I also do a lot of stuff thats really CPU intensive on it, like running distributed HPC apps, transcoding video, audio recording and post-production stuff, photo editing, etc.