Both Seagate and Western Digital have released 3-terabyte external hard drives earlier this year, but WD has finally dropped the first 3TB internal drive on the market. The Caviar Green 3TB, which includes 64MB of cache and hangs on to the SATA 3.0Gb/s interface, bows with a price of $239.
You don't buy the biggest drive on the market with the expectation of blazing speed, and this unit is no different. HotHardware put the Caviar Green through a series of benchmarks and found that while its read performance was competitive with other hard drives on the market, its write speeds lagged behind.
If you want to save $50, you can choose a little less capacity with the 2.5TB version of the Caviar Green. HotHardware points out that neither option is the absolute cheapest hard drive per gigabyte of storage, but if you're a believer in bigger-is-better, then this is the drive for your next system.