Compare Western Digital (WDXUB1200BBNN) 120 GB USB 2.0 Hard Drive to Western Digital (WD3200AVJB) 320 GB ATA-100 Hard Drive

The WD Dual-option external USB hard drive provides automatic or on-demand backup for a PC or Macintosh. It's preformatted and ready to go.Instantly increase storage capacity to save or easily back up valuable data, music, photos, and movies. Less

The 320 GB WD AV Internal Hard Drive from Western Digital® is designed to keep your digital data safe with a performance that excels. This hard drive comes with a cache memory of 8 MB for yielding faster performance. It also supports a data transfer rate of 100 MB/s through its PATA interface for high performance in demanding server and storage applications. Additionally, the WD AV drives delivers low power consumption for reduced system power requirements and increased reliability. Moreover, incorporating the IntelliSeek technology, it calculates optimum seek speeds to lower power consumption, noise and vibration. A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. Lastly, it consumes less current during startup, allowing lower peak loads on systems as they are booted. With a massive capacity and incredible features, this hard drive from Western Digital is designed to satisfy your needs. Less