hw.model: Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
x newsha256.times
+ oldsha256.times
+--------------------------------------------------------------------------+
|            x                                                  +   +      |
|x     x     xx    x x x      xx                   ++        ++ ++  +     +|
|       |________A_M_______|                            |______AM_____|    |
+--------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x  10      8.088083      8.645343      8.428439     8.3862676    0.17500922
+  10      9.017773      9.432005      9.256145     9.2264206    0.12854041
Difference at 95.0% confidence
	0.840153 +/- 0.144268
	10.0182% +/- 1.72029%
	(Student's t, pooled s = 0.153543)