Low-Profile/MD2 Form Factors
The 71605E is the entry-level product, which has RAID 0, 1 and 10. It does not support parity RAID sets and there is no Supercap protection solution available either. This controller also only features 256MB of DDR3 cache onboard, whereas the full featured cards have 1024MB of DDR3-1333 DRAM.
The 71605 and the 7805 are the full featured variants of the controllers in that small MD2 form factor. Adaptec is hoping that the 71605 will reinvent what to expect from a low profile solution. Using the HD MiniSAS cabling increases density remarkably in conjunction with the PMC ROC and this results in simpler cabling, lower cost and better performance.
The Series 7 features a robust RAID feature set and these specifications apply to the full height cards as well.