If you are not running a critical enterprise system, consider buying one from eBay. I've purchased several LSI 8708EM2's from eBay and have been thrilled with them. Have been running on of the cards for well over 3 years without a problem.
Although it typically works when hdds are different, it is recommended to have identical models. I've never read a manufacturer advocating the use of different disks in the same lun/array. Personally, I've been very happy with Samsung's Spinpoint F3R drives. I have 4 in my workstation and 12 in my ESXI machine.
I have two Kingston Hyper SSD 120GB and considering setting up these in RAID 0.
What are the average speeds for the SSD and set up mentioned above in conjunction with a Raid Controller?.
Thanks again for your prompt response.
Transfer rates will increase, but unless you absolutely need the additional performance, why spend so much money on a controller? Do you absolutely need to RAID them? I would probbaly buy a larger SSD instead of 2 smaller units and a controller.
Most people would be happy with such a system, but performance never seems to be good enough. A RAID 0 with several SSDs (the more the better) can't be beat. If you'll install 2 SSDs, why not use the two SATA III ports? That should be almost as fast as a RAID controller.
Sadly the SATA III ports on the Asus Rampage III Extreme are below average since the lack for the latest Marvell drivers for this controller are not available as we speak & the biggest reason why chose not to use the SATA III on this motherboard.
The previous set up was using a SATA III ( AHCI ) with a single SSD 120GB drive with the highest score being no more than ( 450 ) read and write.
Under SATA II ( AHCI ) using the same SSD is providing the same exact speeds mentioned above.
I have not set up a RAID system using this motherboard. Is it really worth the improvement if choose to go this way?
You'll almost double the transfer rates, but everything else will be the same. The speed will be whatever the port allows or the maximum that the SSD can achieve. If it was 450 with one SSD, then it should be close to 900 with two (presuming that there's no bottleneck somewhere else).
You'd have to use the ICH10R which provides SATA II ports, but fast SSD drives have a transfer rate that exceeds 3 Gbits/s. If speed is of ultimate importance, then get a good RAID controller. Have you read this review? http://www.tomshardware.com/reviews/sas-6gb-raid-contro... You should check SSD results.