When I did my back of the envelop calculation, I used the 32M numbers... so here is what I get...

For Nehalem @ 2.93G
32M = 9.218 Secs
For Yorkie @ 2.93G
32M = 13.859

This translates to a increase in speed of 50.3% (these are time to complete so you need to take [(1/slower)-(1/faster)]/(1/slower) to calculate the actual rate, or you could convert into digitis per second and then it calculates out like FPS in game).

For Nehalem @ 2.93 G
1024M = 288.937
For Yorkie @ 2.93 G
1024M = 439.39

This translates to about 52% speed improvement.

This is estimated because I am using 1.58 Wprime, JC is using 1.55 Wprime.

Jack