Single page Print

Test notes
We'll be comparing the performance of the Caviar Green 2TB with that of a slew of competitors, including some of the latest and greatest Serial ATA drives from Hitachi, Samsung, Seagate, and Western Digital. These drives differ when it comes to external transfer rates, spindle speeds, cache sizes, platter densities, and capacity, all of which can have an impact on performance. Keep in mind the following differences as we move through our benchmarks:

Max external transfer rate Spindle speed Cache size Platter size Capacity
Barracuda 7200.11 300MB/s 7,200RPM 32MB 250GB 1TB
Barracuda 7200.11 1.5TB 300MB/s 7,200RPM 32MB 375GB 1.5TB
Barracuda ES.2 300MB/s 7,200RPM 32MB 250GB 1TB
Caviar Black 300MB/s 7,200RPM 32MB 334GB 1TB
Caviar GP 300MB/s 5,400-7,200RPM 16MB 250GB 1TB
Caviar Green 300MB/s 5,400-7,200RPM 32MB 333GB 1TB
Caviar Green 2TB 300MB/s 5,400-7,200RPM 32MB 500GB 2TB
Caviar SE16 (640GB) 300MB/s 7,200RPM 16MB 320GB 640GB
Deskstar 7K1000 300MB/s 7,200RPM 32MB 200GB 1TB
Deskstar E7K1000 300MB/s 7,200RPM 32MB 334GB 1TB
Raptor WD1500ADFD 150MB/s 10,000RPM 16MB 75GB 150GB
RE2-GP 300MB/s 5,400-7,200RPM 16MB 250GB 1TB
RE3 300MB/s 7,200RPM 32MB 334GB 1TB
SpinPoint F1 300MB/s 7,200RPM 32MB 334GB 1TB
VelociRaptor VR150 300MB/s 10,000RPM 16MB 150GB 300GB

Note that we have three versions of Western Digital's GreenPower desktop Caviar. The Caviar GP is the original GreenPower drive, model number WD10EACS, while the Caviar Green is the newer WD10EADS derivative with 333GB platters. The latest Caviar Green 2TB drive should be easy to spot because we've included its capacity in the graphs.

Performance data from such a daunting collection of drives can make our bar graphs a little hard to read, so we've colored the bars by manufacturer, with the Caviar Green 2TB appearing in brighter blue than the rest of Western Digital's drives. Special thanks, a shout out, and mad props go to TR regular Usacomp2k3 for whipping up a slick VB script to automate graph coloring, saving me from entirely too much repetitive clicking.

The Caviar Green 2TB is both the highest-capacity drive on the market and a member of the energy-efficient GreenPower family, so you'll want to pay attention to not only how it fares against the other GreenPower drives, but also Seagate's Barracuda 7200.11 1.5TB.

Our testing methods
All tests were run three times, and their results were averaged, using the following test system.

Processor Pentium 4 Extreme Edition 3.4GHz
System bus 800MHz (200MHz quad-pumped)
Motherboard Asus P5WD2 Premium
Bios revision 0422
North bridge Intel 955X MCH
South bridge Intel ICH7R
Chipset drivers Chipset
Memory size 1GB (2 DIMMs)
Memory type Micron DDR2 SDRAM at 533MHz
CAS latency (CL) 3
RAS to CAS delay (tRCD) 3
RAS precharge (tRP) 3
Cycle time (tRAS) 8
Audio codec ALC882D
Graphics Radeon X700 Pro 256MB with CATALYST 5.7 drivers
Hard drives Seagate Barracuda 7200.11 1TB
Seagate Barracuda ES.2 1TB
Samsung SpinPoint F1 1TB
Hitachi Deskstar 7K1000 1TB
Western Digital RE2- GP 1TB
Western Digital Caviar GP 1TB
Western Digital VelociRaptor 300GB
Western Digital Raptor WD1500ADFD 150GB
Western Digital Caviar Black 1TB
Western Digital Caviar SE16 640GB
Western Digital RE3 1TB
Seagate Barracuda 7200.11 1.5TB
Western Digital Caviar Green 1TB
Hitachi Deskstar E7K1000 1TB
Western Digital Caviar Green 2TB
OS Windows XP Professional
OS updates Service Pack 2

Thanks to NCIX for getting us the Deskstar 7K1000 and SpinPoint F1.

Our test system was powered by an OCZ PowerStream power supply unit.

We used the following versions of our test applications:

The test systems' Windows desktop was set at 1280x1024 in 32-bit color at an 85Hz screen refresh rate. Vertical refresh sync (vsync) was disabled for all tests.

All the tests and methods we employed are publicly available and reproducible. If you have questions about our methods, hit our forums to talk with us about them.