NOTE:   GParted Live is available in three different architectures

Architecture	Description

i686  	32-bit version runs on x86 and x86-64 based computers, 
	limited to physical address space of 4 gigabytes, 
	and uses one processor only.If in doubt, try this one first.

i686-PAE  32-bit version runs on x86 (i686 and higher) and x86-64 based computers, 
	with Physical Address Extension to access more than 4 gigabytes of memory, 
	and supports use of multiple processor cores.

amd64  	64-bit version runs on x86-64 based computers, with ability to access 
	more than 4 gigabytes of memory, and supports use of multiple processor cores.
    	For newer (>2010) computers with UEFI instead of legacy BIOS try this one.