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Friday, March 19, 2010
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Comments
Don't believe OCZ! by: Anonymous on 3/4/2010
I evaluated two of these drives. OSX may well have issues, but these drives are taking liberties with the SATA spec and similarly do not work with Intel IOP-based RAID cards, something OCZ has both directly and indirectly admitted to. It's not that the OS cannot keep up with the drive, OSX doesn't support this new TRIM standard that offloads the wear leveling to the client OS. "Slowing down the drive" is special firmware that manages TRIM internally, which takes extra cycles. It's also necessary with RAID cards. And OCZ couldn't get the firmware to work, regardless of how much time I was willing to give them because they OEM from Indilinx, who also writes the firmware that they have very little control over.

The SATA spec doesn't require TRIM to write data any more than it requires users chew gum while writing data. OCZ took liberties with the spec, pushed the wear leveling to the OS, then blames Apple and RAID card vendors. Compare this to Intel drives, which are almost as fast and have none of the problems that OCZ drives do -- because the implement the spec properly and do not improperly rely on supplemental software that is outside the spec.
Some bullshit by: Anonymous on 10/24/2009
Here's a link that shows you that in many cases actually Mac edition is FASTER, not slower
http://www.xbitlabs.com/articles/storage/display/ocz-ssd-roundup.html

And here's link that shows you that OS X is able to handle at least 800MB/S transfer rates
http://www.barefeats.com/hard128.html
I/O Bound by: Anonymous on 10/4/2009
Regardless of the accuracy regarding why the 2 storage devices have different specification (and I doubt it's accuracy because of journaling comment and the lack of how any testing was done) this is pretty much irrelevant unless you are I/O bound by disk accesses. I might also mention that no matter how fast a drive is, the O/S will throttle the I/O on the drive to what ever speed it wants. Remember that drives of all types from all the different manufacturers (and even the same manufacturers) can have vastly different specs and yet all will work in your system -- Apple, Windows, Linux, or whatever.
by: Anonymous on 10/3/2009
Thank you, Kelemvor. You took the words right out of my mouth. Desktop computing is about simplicity and fewer options for the user, not upgrade-ability, performance, or platform freedom.
-.- by: Anonymous on 10/3/2009
do you honestly think anyone would really notice 10Mb/s slower?
ntfs by: Anonymous on 10/3/2009
NTFS also does journalising, I'm not sure where the information that it doesn't came from...

http://technet.microsoft.com/en-us/library/cc781134%28WS.10%29.aspx
by: Anonymous on 7/28/2009
I don't get it. Why does the 32Gb have to be limited at 220Mb/s when they certify a 120Gb that can go 230Mb/s ?
by: Anonymous on 7/14/2009
mac all the way
Performance question by: Michael A. McKenney on 4/21/2009
How would these drives work on a LSI Logic MegaRAID 8708EM2 controller.

I am currently using Seagate Savvio 2.5" 146GB SAS drives. The benchmark below is RAID 1. One drive on each connection of the 8708EM2.

SiSoftware Sandra

Benchmark Results
Drive Index : 104.84MB/s

Windows Experience Index
Current Drive : 5.9

Performance Test Status
Run ID : LSI MegaRAID 8708EM2 146GB (RAID, NCQ)
Platform Compliance : x64
System Timer : 3.58MHz
Operating System Disk Cache Used : Yes
Use Overlapped I/O : Yes
I/O Queue Depth : 4 request(s)
Test File Size : 16GB
File Fragments : 4
Block Size : 1MB

Detailed Benchmark Results
Buffered Read : 1.01GB/s
Sequential Read : 119.73MB/s
Random Read : 128.25MB/s
Buffered Write : 679.29MB/s
Sequential Write : 31.91MB/s
Random Write : 31.21MB/s
Random Access Time : 1ms
by: Kelemvor on 4/14/2009
It's about time Apple took a stand against high performance computing on the desktop. This is a scourge that has infected the pc industry, and I applaud them for standing up and putting a stop to it.
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