The following CPUs (both 64-bit and 32-bit) are available for PostgreSQL. All these
CPUs run Linux.
Main CPU site is : Google Search engine CPU site "Computers>Hardware>Components>Microprocessors"
http://directory.google.com/Top/Computers/Hardware/Components/Microprocessors
The following is GNU/GPL open-source CPU list:
Open-source CPU site - Google Search "Computers>Hardware>Open Source"
http://directory.google.com/Top/Computers/Hardware/Open_Source
OpenRISC 1000 Free 32-bit processor IP core competing with
proprietary ARM and MIPS is at
http://www.opencores.org/cores/or1k
Russian E2k 64-bit CPU (Very fast CPU !!!)
website :
http://www.elbrus.ru/roadmap/e2k.html
Elbrus is now partnered (alliance) with Sun Microsystems of USA
Korean CPU from Samsung 64-bit CPU original from DEC Alpha
http://www.samsungsemi.com
Alpha-64bit CPU is at
http://www.alpha-processor.com
Now there is collaboration between Samsumg, Compaq of USA on Alpha CPU
Intel IA 64
http://developer.intel.com/design/ia-64
Transmeta crusoe CPU and in near future Transmeta's 64-bit CPU
http://www.transmeta.com
Sun Ultra-sparc 64-bit CPU
http://www.sun.com
or
http://www.sunmicrosystems.com