For the last year or so talk of the new, fabled 65nm Xbox 360's have circulated the interwebs. Now - in this brave year 2008 - I have installed one of these newer 360's in a laptop-type environment, to replace a Zephyr Elite I had been using.
The hottest visible spot on these heatsinks is an area I like to call the "crotch" - where the [GPU] heatpipe emerges from the base of the 'sink'. Anyway, word on the street is that the GPU remains 90nm, and this seems to be the case. At peak it was reading about 140 degrees, which is in line with the Elite Zephyr MB. So in this laptop I think I'd like to shore up the cooling for the GPU more than the CPU because ... the CPU runs a lot cooler than it used to. Even after 30 minutes the crotch of my "super copper heatsink" only got to about 110 degrees. This is in contrast to the Zephyr which easily got up to the 150's at this same spot, with the same heatsink.
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