That should be CPU stays under 65oC and GPU stays under 80oC...
My recipe for a gaming PC was a SilverStone Fortress FT03-Mini, a Be Quiet SFX 300W PSU, an Asrock H61 mini ITX MB, an i5-2400 with a Scythe Kozuti, an MSI GTX660 Twin Frozr, 8GB of RAM and an SSD. All fans are set to their lowest speed.
It's silent, almost inaudible when not gaming and produces a muted sound when under full load, like an AC unit. I share the office with my wife and I can game wearing headsets while she studies and she doesn't mind. Temperatures under full load are OK as well, CPU 65oC and GPU 80oC with a room temperature ~25oC. Small, noiseless and good looking. The case costs a mint though.
By comparing the results from benchmark software with different code bases for desktop and mobile processors that happen to use the same term (CPUMarks) for results...
A sci-fi writer did write a short story about teddy bear robo-nannies shaping up future adults, back in 1965. Take a look at Harry Harrison's I always do what teddy says.
Apple has its strengths, but it is firstly a design company and then an engineering one, where it makes sense for its products and no one else makes something that fits. Function always follows form, the G4 Cube is a nice example and perhaps even the new Mac Pro will prove my point once it's available and tested.
Combine that with excellent marketing (eg do recall the backpedaling on the significance of unavailable features once competition has them, shows they are useful and Apple finally makes them available) and the ability to ride trends as they start and define them (eg smartphones existed long before the iPhone and failed, but Apple was the first to correctly evaluate the then current state of technology and market demand) and you have Apple.
As far as technology goes, I agree with the other Anonymous Coward; if you get outside the consumer space, Apple isn't as innovative as it appears within. My example might not be the best, but I believe it does serve to show my point even in the consumer space; small size, excellent finish, comparable idea of cooling method, available at least a year before Apple's product. It cannot be your idea of similar because it has to follow PC component standards (like Mini-ITX for the motherboard), while Apple can just go custom. That's an advantage Apple enjoys due to its target market, but it isn't innovative by itself.
Let me introduce you to the SilverStone Fortress Mini. I have one under my desk, it takes standard components, screams quality, uses the same cooling principle and is near silent. Apple does not innovate nearly as much as some people think, but is quite adept at creating arquably valuable closed ecosystems, both hardware and software.
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