3 ms·Actually it's considerably slower than the single SSD in the lowest model MacBook Pro.by mrmondo 12y agoActually it's considerably slower than the single SSD in the lowest model MacBook Pro.sp332 12y agoReally? Over 20,000 IOPS?mrmondo 12y agoYes - they do around 850MB/s write and 80-120K IOP/s. Hell, even my 3 year old OCZ vertex 4 in my old 2011 MacBook Pro does 500MB/s write and 65-80K IOP/s