New Toshiba 8TB X300 so not much to compare to but it's released at a price below other existing "desktop" (read: don't use in NAS) 8TB drives.
7,200 RPM with 128MB data buffer delivers exceptional performance, ideal for Graphic Design, Gaming and Animation
High storage density and capacity with up to 8TB of storage-Tackle extreme tasks and accommodate a massive collection of large digital files with spacious storage capacity
Intelligent Serial ATA interface ensures compatibility with most major brands of Serial ATA enabled laptop PCs
Native Command Queuing (NCQ) support enhances seek-time performance
Internal shock detection and ramp-loading technology help protect your drive and data
Perpendicular Magnetic Recording (PMR) technology offers higher capacities, excellent reliability and robustness
Tunnel Magneto-Resistive (TMR) recording head technology delivers improved stability
Built-in cache algorithm and buffer management enhance real-time read/write performance
Compatible with Windows, Mac and Linux
What, no Helium?