[citation][nom]jimmysmitty[/nom]The thing about ARM is that while its efficient, its not very powerful. Look at the current Intel Atom for smartphones vs top end dual core ARM designs. Atom is more powerful than they are.[/citation]
Actually the current A15s is roughly on par with current atoms. Both have wins in certain areas.
However, the coming 64bit ARMs are a different beast altogether and will be all accounts be at least 60% more powerful while maintaining the same power profile.
For microservers this is still mostly irrelevant as processing power is largely unused. Here the winning point for the coming ARMs is their native 64bit addressing (current 32bit ARMs already have 64bit memory address by extension of non-physical registers which naturally incur latency).
[citation][nom]hannibal[/nom]We just have to hope that all Atom prosessors will move to 64 bit, so we may finally see pure 64 windows os in next 6 years or so...Most propably low end Atom will still be 32 bit... *sigh*[/citation]I believe this Atom I have (N570) is 64-bit already. I installed Windows 8 64-bit on it at one point. Even the old(est ?) Atom 230 was 64-bit capable, at least according to Intel's site. http://ark.intel.com/products/35635/Intel-Atom-Processor-230-512K-Cache-1_60-GHz-533-MHz-FSB
Oddly though, the N200 series still seems to be 32-bit.