The Hard Disk Drive (HDD) has enjoyed a long service life in the computer industry, and only recently has the Solid State Drive (SSD) threatened to replace it. While the HDD offers higher capacity at a better price, SSDs offer tremendous speeds and operational performance. Finally, Seagate has achieved the optimal blend of each, and presents the Solid State-Hybrid Hard Drive. Seagate's Momentus-XT hybrid uses a 7200-RPM hard drive fused with 4GB SLC NAND flash to deliver SSD speeds and HDD storage capacity. Seagate's Adaptive Memory technology uses an algorithm to monitor user data access transactions, which caches qualified data onto the SSD. In this article, Benchmark Reviews tests the 500GB Seagate Momentus-XT ST95005620AS Solid State Hybrid Drive against several of the fastest notebook storage devices available.