I just finished the succesful migration of the SSD to RAID. Wow - what a learning curve - worthy of a seperate thread. For now, I am posting the last installment here, which is the performance of the ahcix64.sys driver for AMD RAID support using the onboard RAID ports. While I was able to maintain high seq. read/writes, the overall AS SSD score was quite lower.
SSD results for ahcix64.sys:
The lower overall score in AS SSD benchmarks appears to be driven by latency in the controller access times, and slower performance in the 4k writes. On ATTO however, it is superior in the large block read over any other driver, without sacrificing the read rates. This to me is the closest to the advertised speed of the drive.
So now I am left to wonder if that pesky overall AS SSD score of 13 points warrents putting the drive back under msahci? Now that I am able to confirm that the RAID volume will default to AHCI if it is on the chain and not inititalized as RAID.. it may be worth it to retain the TRIM and NCQ functions.. without sacrificing the speed. Thoughts?
CPU:AMD FX-8350 BE @ 4800Mhz C5F 1803
Clocks: FSB: 200x24 NB:2400Mhz HT:2400 Mem:2133Mhz
Voltage: CPU:1.50 NB:1.20 HT:1.20 Mem:1.65
Memory: 8GB Gskill DDR3-2133 (F3-17000CL9D-8GBSR)
Storage: sysvol: 2x256GB Transcend SSD RAID0 (amd_sata) Game: 128GB SSD Data: 2TB SATA
GPU: EVGA GTX 680 SC+ SIG 2GB 1254/3105