The 6TB version of the WD Black hard drive is up to 29% faster than the 4TB model in terms of maximum throughput and 10% faster on the PCMark Vantage benchmark, according to the company.
The 3.5in, 7200RPM 6Gbps SATA drive features 128MB cache and a dual processor to deliver this performance.
A five year limited warranty applies to WD Black drives.
"Combining maximum system performance with generous capacity, the expansion of WD Black to 6 TB allows gamers, enthusiasts and creatives to push the boundaries of personalisation without compromise," said WD storage technology group senior vice president Cindi Grace.
"In choosing WD Black hard drives, WD desktop customers get the best possible mix of capacity, performance and reliability to handle intense desktop computing with ease."