So I just added a 6GB/s SSD drive to my mac pro in the lower optical drive bay, I have a link speed of 1.5GB/s and a max read speed of around 260mb/s - this seems a little slow, so I was wondering if the lower optical drive has a slower rate or shared with the optical drive? would plugging it directly into the board give me a 3GB/s link speed?
Thanks.
Mac Pro, OS X Mountain Lion (10.8.3)
you would need to invest in a PCIe SATA controller that is SATA III 6G
Some let you attach the SSD directly on the card, and support two.
That is the only way to get higher I/O but even so you should feel how much quicker apps and files open and how even opening dozen apps at login is fast and smooth.
The native drive bays are SATA2 3G btw.
Sonnet Tempo Pro model is worth a look and is bootable and would support 900MB/sec with two. Often better used for media scratch than a system though.
I have Samsung 840 120GB in stock drive bay - very pleased.
you would need to invest in a PCIe SATA controller that is SATA III 6G
Some let you attach the SSD directly on the card, and support two.
That is the only way to get higher I/O but even so you should feel how much quicker apps and files open and how even opening dozen apps at login is fast and smooth.
The native drive bays are SATA2 3G btw.
Sonnet Tempo Pro model is worth a look and is bootable and would support 900MB/sec with two. Often better used for media scratch than a system though.
I have Samsung 840 120GB in stock drive bay - very pleased.
I see, thanks for the reply - so really then 260mb/s is around SATA-II mode which is about as much as I will get unless I get a PCIe SATA controller?
This is really only for system boot drive, but I do already see an improvement, will have a look at the sata cards.
Thanks
260MBytes/sec * 8 bits/Byte give a speed of 2080M bits/sec. You seem to be using SATA 2 (up to 3,000 M bits/sec) transfer speeds and the drive appears to have topped out as fast as it can get data out of the cells.
If you were stuck at SATA 1 speeds of 1,500 M bits/sec, the SATA 1 transfer speed would limit you to (1500 M bits/sec / 8 bits/Byte) about 187.5 M Bytes/sec., still not too shabby.
Mac Pro 2008 SSD Speed?
