PCSTATS Main Page Follow PCSTATS on Facebook PCSTATS RSS Feed PCSTATS Twitter Feed + Motherboards
+ Videocards
+ Memory
+ Beginners Guides
News & Advanced Search  Feedback?
[X]   Directory of
Guides & Reviews

Beginners Guides
Weekly Newsletter
Archived Newsletters

+70 MORE Beginner GUIDES....  

Contact the Suite 66 Advertising Agency

Seagate 2TB Barracuda XT 6Gb/s SATA III Hard Drive Review

Seagate 2TB Barracuda XT 6Gb/s SATA III Hard Drive Review - PCSTATS
Abstract: In this review PCSTATS will be testing out Seagate's 2TB, 6Gb/s SATA III Barracuda XT hard drive. This 3.5" desktop hard drive features an increased 64MB onboard cache where other 2TB drives only have 32MB and it supports Native Command Queing (NCQ).
 81% Rating:   
Filed under: Hard Drives/SSD Published:  Author: 
External Mfg. Website: Seagate Jan 14 2011   Max Page  
Home > Reviews > Hard Drives/SSD > Seagate ST32000641AS

In this review PCSTATS will be testing out Seagate's 2TB, 6Gb/s SATA III Barracuda XT hard drive. This 3.5" desktop hard drive features an increased 64MB onboard cache where other 2TB drives only have 32MB and it supports Native Command Queing (NCQ). The Barracuda XT is the performance oriented drive in Seagate's stables, a spindle speed of 7200RPM gives it a healthy maximum sustained data rate of 138MB/s.

The Barracuda family also includes 'Green' drives which are intended to reduce hard drive power consumption - the obvious side benefits being cool running and reduced noise levels. Vanilla Barracuda drives shore up Seagate's mainstream offerings, these drives have slightly less cache than the Barracuda XT family. Barracuda XT drive capacities range from 2TB to 3TB and offer a fantastic 5 year limited warranty.

The Seagate Barracuda XT being reviewed today uses Perpendicular Magnetic Recording technology and has a capacity of 2 TeraBytes (2,000 GB). Beneath its shiny metal exterior are four platters rotating at 7,200RPM. Each platter has an aerial density of 374GB/in2, so this 3.5" SATA III HDD should come close to attaining is listed sustained transfer rate of 138MB/s in PCSTATS' benchmark set.

Seagate's 2 TB Barracuda XT (ST32000641AS) SATA III hard drive retails for about $249 CDN ($249 USD, £140 GBP) at stores like Newegg.com.

Seagate Barracuda XT 2TB Hard Drive

Model: Seagate ST32000641AS
Type : Hard Disk Drive

Capacity: 2.0TB (7200RPM, five-platters)
Interface: 6Gb/s SATA III / NCQ
Standard Drive Cache: 64MB
MSRP Price: $249 USD

Peak transfer rate for this SATAIII drive is 600MB/s, while average latency is listed at a quick 4.16ms. The drive is backwards compatible with SATA I and SATA II interfaces. Power is supplied by a SATA style power connector, only. The 2TB Barracuda XT drive wasn't too loud by our standards, idling at 2.7 bels and generating 2.9 bels when seeking. Average operational power consumption is a modest 9.2W.

6Gb/s SATA III Expectations and Requirements

Hard drives rated to 6Gb/s SATA III interface speeds communicate with a PC faster, but at the outset the speed bump is going to be muted and in real world terms it is not twice as fast as a 3Gb/s drives. Put it this way; Serial ATA I operates at 1.5Gb/s, Serial ATA II operates at 3Gb/s and Serial ATA III runs at 6Gb/s. You'd be hard pressed to saturate a SATA II connection with 3Gb/s burst of data for anything more than a fleeting moment and that's why SATA III, while a faster interface , realistically has a small impact in bandwidth intensive situations.

Mechanical hard drives just aren't fast enough to saturate a 6Gb/s bandwidth connection continuously, but moving forward new technologies and Solid State Drives (SSD) likely will.

It's considered good form to use SATA 6Gb/s rated cables with SATA III hard drives. The reason is that some cheap SATA cables bundled with motherboards may be fine at SATA II levels, but can be subject to electrical interference that hampers SATA III speeds due to lack of cable shielding, poor quality materials, etc.

This does not mean there are any differences in terms of electrical connections between SATA III / SATA II / SATA cables, there are not. Suffice to say, not all SATA cables are created equally, but at least SATA 6Gb/s rated cables should be of sufficient tolerance.

To take advantage of the Barracuda XT's 6Gb/s SATA III interface, your computer will need SATA III complaint ports, either via the motherboard chipset or a hardware controller such as the Marvell 88SE9123. If this part of the chain is absent, the drive is backwards compatible with SATA 3Gb/s and SATA 1.5Gb/s interface levels.

Alrighty, let's power up this 2TB SATA III hard drive up and test it!

Test System Specs:

The details of how the 2 TB Seagate Barracuda XT (model: ST32000641AS) hard drive test system were configured for benchmarking, including the specific hardware, software drivers, operating system and benchmark versions are indicated below. In the second column are the general specs for the reference platforms this SATA III hard drive is to be compared against. Please take a moment to look over PCSTATS test system configurations before moving on to the individual benchmark results.

PCSTATS Test System Specs
Test System
Processor: Intel Core i7 920
Clock Speed: 20 x 133 MHz=2.67 GHz
Socket: Socket LGA1366
Motherboard: - Intel X58 -
Gigabyte G1.Assassin

(Geforce GTS250)

Memory: 3x 2GB Corsair TR3X6G1600C8D DDR3
Memory Speed: DDR3-1333

3TB Seagate 3TB Barracuda XT (6GB/s SATA III)
2TB Seagate 2TB Barracuda XT (6GB/s SATA III)
1TB Western Digital 1TB WD1001FALS (3GB/s SATA II)
74GB Western Digital Raptor WD740 (3GB/s SATA II)

120GB OCZ Vertex2 (3GB/s SATA II)
Plextor PX-128M1S (3GB/s SATA II)

500GB Seagate Momentus XT SSHD (3GB/s SATA II)
750GB Seagate Momentus XT SSHD (6GB/s SATA III)

Optical Drive:

Plextor PX-B310U Blu-Ray

Power Supply:

Seasonic SS-760KM (760W)


Intel Reference LGA1366 Heatsink

Monitor (1080p):


Software Setup:

Microsoft Windows 7 Ultimate
Intel INF
nVIDIA Forceware 266.58

© 2020 PCSTATS.com Next Page >


Contents of Article: Seagate ST32000641AS
 Pg 1.  — Seagate 2TB Barracuda XT 6Gb/s SATA III Hard Drive Review
 Pg 2.  HDD Benchmarks: PCMark Vantage
 Pg 3.  HDD Benchmarks: HD Tune Pro Read / Write
 Pg 4.  HDD Benchmarks: Sandra 2011
 Pg 5.  HDD Benchmarks: HD Tach
 Pg 6.  HDD Benchmark: File Transfer & Conclusions

Use the power of Google to search all of PCSTATS and the PCSTATS Forums. Tell us what you think of this new feature - FEEDBACK?
Hardware Sections 

PCSTATS Network Features Information About Us Contact
PCSTATS Newsletter
Tech Glossary
Technology WebSite Listings
News Archives
Submit News (Review RSS Feed)
Site Map
PCstats Wallpaper
About Us
Privacy Policy
Advertise on PCSTATS

How's Our Driving?
© Copyright 1999-2020 www.pcstats.com All rights reserved. Privacy policy and Terms of Use.