Heres a bench I ran with 4x Raid 0 128GB M3's (not M3P) on an Areca 1882i - will test 2x R0 on an LSI 9260 later today (going into my private PC). 4K is looking good

4xM3_128K.jpg4xM3_128K_AS.jpg

Edit: FW was 1.01 latest is 1.05 so results may have improved already