MIG-31

Apple MacBook Pro owners reporting lackluster speeds possibly capped by Apple


Some Apple 13" MacBook Pro owners have been left confused due to slower SATA connection speeds than expected through their laptops.

The MacBook Pro laptops in question are supposed to see speeds of 3Gbps, but some owners have been capped at just 1.5Gbps.
____________
Source: Dailytech

__________________

IvanV

So they're only getting 187.5MB/s transfer speeds? Appalling!

__________________
Feed the porkers and don't touch the buttons!

Zardon

I read this over here too recently OCZ had to slow down its SSDs because Mac OSX can't handle the speed - Bright Side Of News* about the journaling system being the issue.

Can't say ive seen the issue on the 17 inch Macbook pro, get over 200meg via the intel drive I have but it is limited to 80meg or so on the write speed. Shall investigate when I have a 180megabyte per second drive write capable drive at hand!

IvanV

Oops, I forgot that those things had SSDs capable of at least reading at those or higher speeds. Still, it's a little strange how it's not safe for 60GB Vortexes to have 135MB/s top writing speed, but it's okay for 120GB models to write at up to 170MB/s. I suppose that there was a firmware modification that slightly penalized the disks, or maybe the Mac certification program prescribes a somewhat different performance evaluation mechanism.

__________________
Feed the porkers and don't touch the buttons!

Zardon

nah its nonsense, I get 235mb/s read on the intel M25 on OSX 10.5.7 via a gen 5 Macbook pro 17 inch - not sure what the article is about. if I get a vertex ill test it out. Journaling is a great feature set for the file system as it protects against power outages or hardware component failures which cuts down on the need to reinstall or repair OSx after failures. I know there is a slight overhead, but the fact ive seen such high speeds, comparible to windows on the intel drive would make me assume something is a little suspicious with these results.

I know people in OCZ, I shall find out.

Zardon

from Tobias in OCZ.

HI Allan,

Hope you are doing well.

I was misquoted in that article and have asked them to update it. The official comment on the performance difference is:

“Though there is not a change in the Vertex Mac Edition hardware that makes the drives slower than the PC version, the Mac drives are primarily designed for use in Apple Macbooks and we rated them slightly lower as these are not desktop platforms, we wanted to set the expectations appropriately for the platform and applications.”

Zardon

And in the interests of being thorough, here is the intel M25 tested on OSX 10.5.7 on the 5.2 revision Macbook pro 17inch.



Well over 230MB on the reads.