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The heart of a modern computer: the silicon CPU-chip.
Here is an 2004 Intel Pentium M (centrino) CPU.
It is a bit damaged, but you can distinguish some parts of the physical architecture.
КР1801ВМ1 CPU on the motherboard of Elektronika BK-0010-01 home computer.
See more about this computer on en.wikipedia.org/wiki/Elektronika_BK
A stacked image of a wafer full of CPU die's (I believe they are IBM CPU die's). Reversed 24mm on D300.
These are IBM's Power6 CPUs. They are dual-core and runs at 5GHz. Very fast, very hot, and very power hungry. These goes into the IBM 9119-FHA, largest of the Power6 model machines. Each "PU Book" houses 4 of these CPUs and each 9119-FHA can house 8 "Book"; making each 9119-FHA capable of running 64 CPUs. Quite impressive.
We are looking at getting Power7 machines (9119-FHB) when they are available and they can house 128 CPUs with each running at 2 "hyper-threads". Going to be quite a massive computing platform!