@takemehomegrandma
BTW, for this type of applications (the characteristics of RC5-72), what kind of results would you expect from a dual G4 @ 1.5 GHz (in Linux of course)? That is - if you take the clock frequency * 1.5, and then doubles the amount of CPU's?
Yes, it's linear.
About how many blocks could one expect in a 24h period?
7447@1000 does >10678428 keys/sec. To get total keys per 24h multiply with 60*60*24. One RC5-72 block contains 4 GKeys (4 * 1024^3 keys). To get number of blocks / 24h, divide the total calculated keys by (4 * 1024^3).
Result for G4@1000MHz: 214.81 blocks / 24h
For dual G4 @ 1.5GHz, you multiply the keys/sec by 1.5 and multiply by 2.0 for two cpus. Then do the math as above (or alternatively just scale the G@1000 result).
Result for 2 x G4 @ 1500MHz: 644.44 blocks / 24h.
The actual numbers would be slightly different depending on the system load and such factors.
