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diff --git a/source/hardware_evolution.rst b/source/hardware_evolution.rst new file mode 100644 index 0000000..38dcab1 --- /dev/null +++ b/source/hardware_evolution.rst @@ -0,0 +1,31 @@ +================== +Hardware evolution +================== + +Hardware Evolution 2008 - 2012 +------------------------------ + +Although the XO has continued to look pretty much the same on the outside, the electronics inside have been changing. For details of the differences, refer to: + +- http://wiki.laptop.org/go/Hardware_specification for the XO 1.0 + +- http://wiki.laptop.org/go/Hardware_specification_1.5 + +- http://wiki.laptop.org/go/XO-1.75 + +To some extent, the changes were made to keep using high volume parts, and improve performance. The change from 1.5 to 1.75 involved a change of the processor from x86 to arm, and a reduction in power consumption of about 50%. With power management improvements, this permits the XO to last more than 3.5 hours. + + +As you can see from the "boot time" comparison, lower power has not been at the expense of decreased performance. + ++--------+----------+--------+------------+ +|Version |Hard Disk | Memory | Boot Time | ++========+==========+========+============+ +|XO 1.0 | 1 GB |256 MB | 76 s | ++--------+----------+--------+------------+ +|XO 1.5 | 4 GB |1000 MB | 54 s | ++--------+----------+--------+------------+ +|XO-1.75 | 4 GB |512 MB | 47 s | ++--------+----------+--------+------------+ + +TODO: Add xo-4 info |