Faster SPI library optimized for the teensy 3.0 from pjrc.com
Speed test should report the following speeds, for a given clock rate:
96MHz (OC)
Time to write 10485760 bytes: 3841 ms (4 sec)
2729.955811 Bytes/msec
2729955.750000 Bytes/sec
48MHz
Time to write 10485760 bytes: 3847 ms (4 sec)
2725.697998 Bytes/msec
2725698.000000 Bytes/sec
24Mhz
Time to write 10485760 bytes: 7687 ms (8 sec)
1364.089966 Bytes/msec
1364090.000000 Bytes/sec