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2xSSD SATA 3.0 Gb\s - Raid 0 on SATA 6.0 Gb\s - Bus Limitations?

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December 9, 2010 10:28:02 PM

Hello everyone:

I'm trying to put together my new gaming rig.

These are the parts (If you have any recommendations they are very welcome)

Intel Core i5-760
Corsair Dominator 4GB (2 x 2GB) DDR3 1600 (PC3 12800)
EVGA GeForce GTX 460 (Fermi) 768MB
OCZ Agility 2 - 2.5" 60GB SATA 3.0 Gb\s MLC - Read: 285MB/s - Write: 275MB/s
Windows 7 - 64bit

Motherboard:
Asus P7P55D-E LX

Important Features:
IntelĀ® P55 Express Chipset

1 x PCIe 2.0 x16
4 x PCIe 2.0 x 1 (2.5GT/s, gray slots)
2 x PCI

MarvellĀ® PCIe SATA 6Gb/s controller:
- 2 x SATA 6.0 Gb/s ports (Gray)

Intel Matrix Storage Technology Support RAID 0,1,5,10

I'm planning to put 2 SSD on Raid 0, however this brings me a few questions?

Since the read/write speeds are almost at the limit of the SATA 3.0 Gb\s in raid 0 this will break that limit, I'm trying to avoid a bottleneck in the setup, so I have a few questions:

Is possible to use these SSD in Raid 0 in a SATA 6.0 Gb\s?
What I need for that (best motherboard and raid controller)?
Will this affect the performance of my PCIe Video Card? - I have been reading that some manufacturers uses part of the PCIe bus for SATA 6.0 Gb\s and USB 3.0 devices.

thanks.
a c 99 G Storage
December 9, 2010 11:21:03 PM

1) The SATA II 3.0Gbps bandwidth is PER CHANNEL. So 2 drives in RAID 0 "can" acheive 600Mbps w/o problems. My RAID 0 array can hit over 400Mbps, over the single 3.0Gbps specs.

2) Since the SSD are SATA II, I'd stay with the SATA 2 ports on the mobo, using the Intel ICHR10 chipset controller.

3) I don' t know about the PCI-e bandwidth performance hit using the SATA 6.0 controller. But I've read that Intel doesn't support SATA III or USB 3.0 yet, so it must be on it's own chips, not effecting PCI-e chipset.
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