CPU Speed   64 bit TSC Overflows in: 64-bit Float loses precision:
----------- ------------------------ ------------------------
   0.001GHz 584942y 152d  8h  1m 49s    285y 224d 23h 47m 34s 
   0.010GHz  58494y  88d  5h 36m 10s     28y 204d 23h 58m 45s 
   0.100GHz   5849y 154d 19h 45m 37s      2y 312d 11h 59m 52s 
   0.500GHz   1169y 322d 23h  9m  7s      0y 208d 11h 59m 58s 
   1.000GHz    584y 343d 23h 34m 33s      0y 104d  5h 59m 59s 
   2.000GHz    292y 171d 23h 47m 16s      0y  52d  2h 59m 59s 
   3.000GHz    194y 357d 23h 51m 31s      0y  34d 17h 59m 59s 
   4.000GHz    146y  85d 23h 53m 38s      0y  26d  1h 29m 59s 
   5.000GHz    116y 360d 19h  6m 54s      0y  20d 20h 23m 59s 
  10.000GHz     58y 180d  9h 33m 27s      0y  10d 10h 11m 59s 
 100.000GHz      5y 310d  0h 57m 20s      0y   1d  1h  1m 11s 
1000.000GHz      0y 213d 12h  5m 44s      0y   0d  2h 30m  7s 


(y,d,h,m,s) suffix means (years,days,hours,minutes,seconds.)
  where a year is assumed to have exactly 365 days (so sue me!)