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Feature Table
8:05 AM - October 11, 2007 by
Patrick Schmid
Source: Tom's Hardware US – Keywords: wd, caviar, gp
Syndication:
Source: Tom's Hardware US – Keywords: wd, caviar, gp
Syndication:
Table of Contents:
Feature Table
| Manufacturer | Western Digital |
|---|---|
| Model | Caviar GP |
| Model Number | WD10EACS |
| Capacity | 1,000 GB |
| Spindle Speed | 5,400 to 7,200 RPM |
| Other Capacities | 500, 750 GB |
| Platters | 4 |
| Cache | 16 MB |
| NCQ | Yes |
| Interface | SATA/300 |
| Warranty | 3 years |
Test Setup
| System Hardware | |
|---|---|
| Processor(s) | 2x Intel Xeon Processor (Nocona core)
3.6 GHz, FSB800, 1 MB L2 Cache |
| Platform | Asus NCL-DS (Socket 604)
Intel E7520 Chipset, BIOS 1005 |
| RAM | Corsair CM72DD512AR-400 (DDR2-400 ECC, reg.)
2x 512 MB, CL3-3-3-10 Timings |
| System Hard Drive | Western Digital Caviar WD1200JB
120 GB, 7,200 RPM, 8 MB Cache, UltraATA/100 |
| Mass Storage Controller(s) | Intel 82801EB UltraATA/100 Controller (ICH5)
Promise SATA 300TX4 ICP 5085BL 8-Port SAS/300 |
| Networking | Broadcom BCM5721 On-Board Gigabit Ethernet NIC |
| Graphics Subsystem | On-Board Graphics
ATI RageXL, 8 MB |
| System Hardware | |
| Performance Measurements | Atto Diskmark |
| I/O Performance | IOMeter 2003.05.10
Fileserver-Benchmark Webserver-Benchmark Database-Benchmark Workstation-Benchmark |
| System Software & Drivers | |
| OS | Microsoft Windows Server 2003 Enterprise Edition, Service Pack 1 |
| Platform Driver | Intel Chipset Installation Utility 7.0.0.1025 |
| Graphics Driver | Default Windows Graphics Driver |
- Previous page Western Digital Caviar GP
- Next page Benchmarks Results
I wonder whether the following should be read such that each GP model has it's own but otherwise fixed RPM for that model.
WD spec sheet says:
"IntelliPower™ — A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. For each GreenPower™ drive model, WD may use a different, invariable RPM."
Or is it really a fully dynamic RPM during operation as could be read by:
"WD goes down this path with its Caviar GP drives, as the firm adjusts the rotation speed anywhere between 5,400 RPM and up to 7,200 RPM dynamically for each model."
Sorry, it seems every series has a different description. I quoted the Caviar GP and the tech overview. The different descriptions are:
RE2-GP series
IntelliPower — A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. Additionally,....[some other remarks]
AV-GP series
IntelliPower – A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance.
Caviar®GP
IntelliPower™ — A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. For each GreenPower™ drive model, WD may use a different, invariable RPM.
All GP drive are fixed 5400rpm as of today. No they do not vary RPM, this reviewer does not know what he is talking about. It has been proven mathematically with access times and acoustical measuring. Further more, WD does NOT claim the spindle speed varies. They CONFIRM that the spindle speed is INvariable as clearly stated below. WD has pulled ALL GP spindle speed information off their website to avoid confusion and to not detour people from this great drive.
Caviar®GP
IntelliPower™ — A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. For each GreenPower™ drive model, WD may use a different, invariable RPM.