Loss of read/write speeds fusion drive

hey guys!

little confused, when i first unboxed my iMac i was getting Write speed of 320.0 MB/s and a truly amazing Read speed of 715.0 MB/s a mate popped round this morning and i thought i would show off and show him the speeds, i ran the same benchmark and i got Write speed of 310.0 MB/s and a Read speed of 519.0 MB/s

i ran the test a few times and even rebooted the system...

where has the speed gone lol, i mean... im not complaining... its still stupidly fast, just wondering where it could of gone

The figures you quote, 310/519MB/s seem about correct pibolar. Have a read of this showing speed tables:-


Fusion drive: what it is and how it speeds up your Mac | News | TechRadar