DV Hardware bringing you the hottest news about processors, graphics cards, Intel, AMD, NVIDIA, ATi, hardware and technology!

WD says its new Caviar Green 1TB hard drive has 333GB platters and 32MB of cache, compared to a respective 250GB and 16MB for the old model. Those tweaks reportedly reduce power draw by up to 20% and increase performance by up to 10%. Considering the original remains the most power-efficient 3.5" terabyte hard drive, a 20% drop in power consumption sounds like a big achievement.

With that said, we should point out several caveats. The Caviar Green series uses lower spindle speeds than typical 7,200-RPM drives, which reduces performance. Also, the company's 300GB, 10,000-RPM VelociRaptor actually draws significantly less power than the current terabyte Caviar Green, probably because it's a 2.5" drive in a 3.5" sled.