Western Digital Caviar SE 2500JS HDD Stockton CA

The WD2500JS is a 250GB hard drive with a 7,200RPM spindle motor, which supports the new SATA-II interface, allowing for a theoretical maximum 300MB/s transfer speeds. Read on as take a close look at the drive and compare it against a high-performing SATA-150 drive to find out the performance differences between SATA and SATA-II.

Hughes Network Systems LLC
(209) 475-9187
4950 Pacific Avenue
Stockton, CA
Services
Computer Network Hardware

Data Provided by:
AzamTel.com, Inc.
(814) 861-6010
Stockton, CA
Services
Internet Directories, Computer Hardware and Supplies, Fiber Optic Communications
Payment Options
Carte Blanche, Cash Only, Financing Available, Credit Terms Available,

Data Provided by:
Computek
(209) 601-9580
4130 Mercy Lane
Stockton, CA
Services
Information Technology Services, Computer and Equipment Dealers, Computer Networks, Computer Systems Consultants and Designers, Computer Training
Hours
Mon-Sun: 24 Hour Service
Payment Options
American Express, MasterCard, Money Orders, Financing Available,

Data Provided by:
Tracy Computer Service
(209) 835-8096
3117 N Tracy Boulevard
Tracy, CA
Services
Computers and Equipment Repair and Maintenance, Computer and Equipment Dealers, Computer Networks, Consumer Electronics Stores
Hours
7 Days A Week

Data Provided by:
Business Software Solution
(800) 969-2774
Tracy, CA
Services
Computers and Equipment Repair and Maintenance, Computer Networking Installation, Network Consultants, Computer Network Hardware, Computer Networks

Data Provided by:
Computer Net
(209) 472-2999
2222 Grand Canal Boulevard # 1
Stockton, CA
Services
Security Guard and Patrol Services, Computer and Equipment Dealers
Payment Options
American Express, MasterCard, Discover, VISA

Data Provided by:
Central Valley Electric Supply
(209) 464-1010
2735 Teepee Drive
Stockton, CA
Services
Resale Second Hand and Used Merchandise Stores, Electric Equipment and Supplies Wholesale and Manufacturers, Electric Motor Dealers, Consumer Electronics Stores, Electric Motor Controls Wholesale and Manufacturers
Payment Options
G.E., G.E

Data Provided by:
Cintronix PC Repair
(209) 814-8746
580 N. Wilma Ave %253Cbr%253ESuite 207-E%253Cbr%253E
Ripon, CA
Services
Computers and Equipment Repair and Maintenance, Computer Consultants, Computer Supplies Parts and Accessories, Used and Recycled Computers, Computer Upgrade Services
Hours
Mon-Fri: 09:00 AM-09:00 PM
Sat-Sun: 08:00 AM-08:00 PM

Data Provided by:
Profluent Systems Inc
(925) 513-4400
4920 Discovery Pt
Discovery Bay, CA
 
Best PC Value
(209) 469-2500
2005 Pacific Ave
Stockton, CA
 
Data Provided by:

Western Digital Caviar SE 2500JS HDD



Introduction

Unless you have been living under a rock, you will be no stranger to the Serial ATA standard that has become the new medium for mass storage connection to the PC. Serial ATA standards have now started to produce in mass on motherboards, with upwards of 4 ports standard on Intel, ULi, SIS and nVidia Southbridge's - not to mention the amount of additional controllers being added by motherboard makers, its not uncommon to see 6-8 SATA ports per motherboard.

Serial ATA's main claim to fame is serial transfer of data from the I/O logic to the HDD controller chips. Serialisation means using serial communication architecture, similar to that which was introduce by RAMBUS for its RDRAM memory. Serial ATA Generation 1 is able to transmit at a theoretical 1.5Gbps (or 150MB/s) between the Southbridge and the onboard system controller of the Hard Disk, however, limits in magnetic storage doesn't permit the HDD to actually take advantage of this - speed wise, SATA is no more faster than ATA-133 HDD's until NCQ come along.

NCQ or Native Command Queuing is fairly new to the Serial ATA standards. NCQ allows the HDD to smartly access data out of order rather than having to go though an order state to grab the required files, which can be located in different parts of the drive platers.

Another feature of Serial ATA is the reduced size of the cables while lengthening them at the same time. SATA cables are only 7 wires wide, as opposed to IDE which are 80 wires across. IDE also limits the size at just over 60cm long while Serial ATA can go up to 1 meter before a repeater is needed to power re-transmit data over longer cables.

Serial ATA Gen 1 did make some changes, now we have received Serial ATA Generation 2. SATA-II as it is known speeds the data transmission from 150MB/s up to 300MB/s between the HDD and the Southbridge chipset. nVidia and Intel are the first to offer this in their south bridges, with ULI, SiS and ATI soon to follow.

Today we are looking at the first SATA-II HDD to cross our labs, Western Digital's Caviar SE WD2500JS and comparing it to a high-performing Seagate SATA 7200.8 HDD.

Click Here to Read Complete Review