for the server market, power wont always be the decideing factor, there is also cost to run the servers, and arm is significantly lower power than intel, and as for speed, arm is getting faster and faster without the nead of an elaborate heat sync.
this could honestly be the begining of a power shift for arm and intel.
if arm succedes in the server market, it will cross to the desktop, now, 1 arm cpu wont really be powerfull enough there, i was trying to figure out how much the cpus cost, but google has been failing me there, however i did come across this, "$0.10 per processor shipped" its the cost that they pay arm on average per chip, or how much they get, so im assumeing that r&d for chips is sinificantly less of a cost than for intel and amd,
now im assumeing that you can slap 4 of these quad core ones into a single computer and come out less than a single quad form intel.
an essentially noiseless cpu with low heat? 16 threads? ass time evolves its obvious that applications WILL be threaded, once that happens, will intel/amd be able to compete with what arm has to offer? they may not be able to compete on clock per clock, but on the same power draw of a quad core intel sandy bridge, or amd phenom II
intell being 95 watt
amd being 125 watt
arm being 5 watt
you can fit 19-25 cpus in a pc at same powerdraw, space may be an issue there though, and no idea on cost,