You will however loose the TRIM ability (Win7 needed for TRIM).
TRIM is a program which cleans up unused data on the SSD drive, so that when you write something to your SSD, the SSD doesnt need to delete the content in the datablock before writing to it, because TRIM has already cleaned the datablock. This means that you will keep the performance of the disk in tip top shape. (The SSD gets slower for everytime you write too it unless you have TRIM/GC).
The C300 does however have a native garbage collection system which cleans the disk without the help of TRIM. This works very well, tho the TRIM makes this process even better.
Marvell® PCIe 9128 SATA 6Gb/s controller with HyperDuo function*
2 xSATA 6.0 Gb/s ports (navy blue)
JMicron® JMB362 SATA controller*
2 xExternal SATA 3.0 Gb/s ports (1 x Power eSATA)
* These SATA ports are for data hard drives only. ATAPI devices are not supported.
If I get another C300 for Raid 0, which SATA ports will be my best option?
The marvell controller gives the drive better seq read/write speeds because its 6Gbits. The marvell controller is however not as good on small random read/write operations, and the Intel controller is the clear winner here in that regard.
4k random read/write is way more important than seq read/write, so I would actually put these drives in the 3Gbit intel controller.
Or, you should try both, bench them, post the screens here, and then decide whitch controller you want to use! =)
TRIM commands are not supposed to be passed in RAID mode on SSDs, from what I've read. However, I have two 128GB C300 drives in RAID-0 (256GB capacity) and through a couple CMD commands I was able to confirm that TRIM was enabled. Not sure if that was a fluke or not, but hey, whatever
I've been reading also that the Marvel SATA3 controller does not work with SSDs in RAID-0. It regularly drops at least one drive from the RAID array, and also stutters and freezes. Most users end up going back to the ICHR10 controller for stability. That may be only with the Marvel controller on the Gigabyte boards though, I can't confirm that.
With SATA2, you should get between 530 and 575mb/s streaming 512k reads with two drives, which is simply sexy.