AMD Opteron: NUMA based MP.

[eddit]

Personally I think the G4 still has some milage in it.  The current G4's (MPC 7455, ie Apollo) are still using  a 0.18 micron fab process.  When Motorola move to a 0.13 fab process there will be a further speed bump.  

PS: The MPC8540 (Currently the only G5, or e500 core processer being produced) uses the 0.13 micron process.

Edwin

[eddit]

Intel will NOT be using the x86-64.  This is a AMD specific extension to the x86 instruction set.

AMD Site

Intel has created a whole new instruction set for their 64 bit processor.  To run x86 instructions they have imbedded a pentium type prucesser into their Mcerd ? chip