Hi Yogin,
Even if you do not mention it, I assume you have a Silver Mac Pro, and not the black round one.
So there are several ways you can have your SSD :
- 1°) as a replacement in the optical drive bays : those are on a 1,5gbps SATA bus. That means you'll have a maximum of 180MB/s theoritiacal speed, which means a real life speed of about 130Mb/s.
- 2°) in one of the 4 dedicated HDD bays : those have each a 3gbps SATA bus. Maximum available speed is about 370 MB/s, but again : that's theory. In real life, you can depend on about 250 - 280 MB/s.
- 3°) using the external port , but those are really limited : 480mbps for the USB 2.0 ports (60MB/s max, but more about 35-40MB/s real) or FireWire800 (about 100MB/s max, about 65 - 75 MB/s real)
- 4°) connected to an added PCI card : depending on the cards, you can achieve up to 450MB/s for a single drive, and up to 900MB/s for 2 SSD's in RAID 0 mode. I use a Sonnet Tempo SSD Pro card with Intel DC S3500 600GB hard drives in RAID mode and get speeds close to 850MB/s. I also use an Addonics mSATA 4 bay card with a single Samsung 850EVO hard drive and I am able to get over 460MB/s in R/W on that drive.
So, to sum it up : using the Mac's internal ports, the only solution you have to break the 260MB/s speed barrier is :
- 1°) use the dedicated internal hard drives bay but configure your SSD's to be used as RAID. You will get speeds up to 550MB/s in this case, up to 750MB/s if you use a RAID array of 3 SSD's ;
- 2°) add a PCI card that will allow to add internal SSD's.
Regards.