Today most Netbooks are built around Intel's Atom microprocessors.
The
Intel Atom is Intel's line of low-power, low-cost and low-performance x86 and x86-64 microprocessors for use in Netbooks up to 10.1-inch displays.
The
Atom N270 debuted on June 3, 2008 and the
Atom N280 on February 6, 2009. The N270 has a clock frequency of 1600 MHz, the N280 runs at 1667 MHz. Both microprocessors are
Single-Core CPUs built around 47 million transistors. Graphic and memory controllers are
not integrated into the chips.
On December 21, 2009 Intel released the
Atom N450 CPU and on March 1, 2010 the
Atom N470. The N450 runs at 1667 MHz and the N470 at 1833 MHz. Both microprocessors are
Single-Core CPUs built around 123 million transistors and have integrated graphics and memory controllers supporting DDR2-667 memory-cards.
Released in the 2nd quarter of 2010 Intel's
Atom N455 and
Atom N475 are virtual N450 and N470 processors but are supporting the faster DDR3-800 memory cards.
In the 3rd quarter of 2010 Intel released the
Atom N550 for use in Netbooks. The new CPU is a
Dual-Core microprocessor that runs at 1500 MHz. It has built-in graphic and memory controllers, uses 176 million transistors and supports DDR3-800 memory cards. Benchmarked with
7-Zip a N550 Netbook shows about twice the power of a N450 Netbook, but it also uses about 50% more power from the battery...
Designated for Sub Netbooks (e.g. Sony's VAIO P) only:
During the 2nd quarter of 2010 Intel released the
Atom Z5xx serie of CPUs and announced an
Atom Z6xx serie for 2011. These microprocessors are
Single-Core CPUs. The Z5xx serie uses 47 million transistors and comes without integrated graphic and memory controllers. The Z6xx serie will use about 140 million transistors and will have integrated graphic and memory controllers.
Another serie of Atom processors is designated for the use in small Desktop computers:
The
Atom 230 is a Single-Core and the
Atom 330 a Dual-Core processor without integrated graphic and memory controllers and are running at 1800MHz.
Intel's
D410 and
D425 are Single-Core CPU's with integrated graphic and memory controllers and last but not least Intel released the
D510 and the
D525 Dual-Core microprocessors also with integrated graphic and memory controllers.
D410 and D510 are supporting DDR2-800 memory-cards, whereas the D425 and the D525 are addressing DDR3-800 memory cards.