Dear freesurfers,
i was running Freesurfer on the same subject on two independent Computers. 
The first Computer PC1has 2 physical Intel processors with 2 logical each - 
(dual core) - 1.6GHz with 4Gb Ram and the second PC2 has 2 physical Intel 
processors with 4 logical - (quad core) - 3 GHz with 8 Gb Ram.
After running on these two Computers - i start at the exactly same time - i got 
a surprising result: My faster Computer PC2 took 41h to run the subject and the 
slower Computer took 31h. 
I wonder if somebody have some comment on this, because i have no idea what is 
wrong ( When i have the Linux System Monitor on, watching the CPU History, it 
seems that the slower PC hat a more effective occupation/usage than the faster 
- switching faster between one CPU and the other one...)
Another small question: 
In the final segmentation table, i noticed that there are some small diferences 
between the results of PC1 and PC2: for ex.:
PC1:ctx - rh-caudalmiddle frontal = 5029 5029
PC2:ctx -             -"-                     5360 5360
, so a diference of ~6%. I guess these are variations due to the algorithm..
Are there some established limits for that diferences?
Thanks for help,

Thomas 
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