The WD Xe is designed for mainstream server and storage applications. The Xe comes in capacities of 300, 450, 600, and 900 GB in a 2.5-inch form factor. The Xe spins at 10,000 RPM, has 32MB of cache, and features an average latency of 3.6ms. The Xe actually has a dual-core processor to help deliver top performance under the most demanding workloads, and it sports a sustained sequential data rate up to 204 MB/s.