The Adaptec RAID 5405 is equipped with industry-leading dual core RAID on Chip (ROC), the latest x8 PCI-Express connectivity, and 256MB of DDR2 cache to deliver over 250,000 IO per second and 1.2GB/s.
But the HighPoint can support up to 16 HDD's compared to 4 HDD's for the Apaptec 5405.