The representaive performance specifications in the table below are results averaged over many repetitions of each function call. Data is in cache. Results were measured using a 150MHz Pentium processor PC with a 256K second level cache and a 150 MHz Pentium with MMX processor PC with a 256K second level cache. The tests were run under Windows* 95.

Selected Functions	Execution Times for Pentium® Single Precision Floating Point	Execution Times for Pentium® with MMX™ Technology 16 Bit Integer Performance	Units
1024 dim. Add	3.9	0.6	clock/element
1024 dim. Multiply	3.9	0.6	clock/element
1024 dim. Minimum	3.1	0.7	clock/element
1024 dim. Square Root	47.3	9.0	clock/element
256 Pt Complex FFT	137.8	294.5, 120.2*	microseconds
256 Dim Hamming Window	87.3	9.8	microseconds
1024 dim. Dot Product	41.0	6.0	microseconds
32 tap x 1024 dim. FIR Filter	1225.0	519.0	microseconds
32 tap x 1024 dim. Convolution	1648.0	536.0	microseconds

* Input constrained to range [+-512], max error < 0.1% for 256 points FFT.