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Written by Olin Coles   
Tuesday, 29 March 2011
Table of Contents: Page Index
Seagate Barracuda XT 3TB Hard Drive ST33000651AS
Features and Specifications
Drive Testing Methodology
Seagate Barracuda XT: SATA 3G vs 6G
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
Short Stroke Disk Performance
Desktop Storage Final Thoughts
Seagate Barracuda XT Conclusion

Barracuda XT Features

The new Barracuda XT hard drive from Seagate delivers the industry's first 3TB desktop drive with a comprehensive, non-hardware solution to access the entire 3TB of data, even on legacy systems. Utilizing new features within the free Seagate Disc Wizard software, Barracuda XT users can now deploy 3TB of storage on legacy systems using Windows XP and PC BIOS systems or on newer Windows systems and systems equipped with new UEFI BIOS.

  • Maximize your system performance with the industry's biggest cache available-64 MB.
  • Future-proof your storage with the SATA 6Gb/s interface, which is fully compatible with legacy SATA controllers while also providing an upgrade path to a host of new SATA 6Gb/s motherboards and hard drive controllers.
  • Backed by the Seagate 5-Year Limited Warranty and boasting a massive 2 TB of storage capacity, you can rest easy knowing your Barracuda XT hard drive will provide you with more than ample space and years of worry-free operation.

Key Advantages

  • Massive 3TB and 2TB capacity options provide plenty of room for downloading today's storage-craving PC games or storing many hours of high-definition video content.
  • The first comprehensive, non-hardware solution to accessing 3TB of capacity by using Seagate DiscWizard software.
  • The 7200-RPM performance platform complements high capacity, delivering a powerful combination of extreme storage and top-end desktop performance.
  • A 64MB caches optimizes burst performance and reduces data throughput bottlenecks.
  • The SATA 6Gb/s interface enables the use of the industry's newest and fastest hard drive controllers while providing backward compatibility to legacy SATA 1.5Gb/s or 3Gb/s systems.

Best-Fit Applications

  • High-performance PC gaming systems
  • High-definition video editing and production systems
  • Home servers and workstations
  • Desktop RAID
  • Firewire 800- or eSATA-enabled external storage devices

ST33000651AS Specifications

  • Model Number: ST33000651AS
  • Interface Options: SATA 6Gb/s NCQ
  • Transfer Rate: Max Ext (MB/s) 600
  • Sustained Data Rate: OD (MB/s) 149
  • Cache (MB): 64
  • Average Latency (ms): 4.16
  • Spindle Speed (RPM): 7200
  • Heads/Disks: 10/5
  • Bytes per Sector: 512
  • Load/Unload Cycles: 300K
  • Nonrecoverable Read Errors per Bits Read: Max 1 per 10E14
  • Annualized Failure Rate: 0.34%
  • Mean Time Between Failures (hours): 750,000
  • Limited Warranty (years): 5
  • Startup Current +12 Peak (A, ±10%): 2.0
  • Idle, Average (W): 7.37
  • Operating Temperature (°C): -5 to 60
  • Nonoperating Temperature (°C): -40 to 70
  • 2 ms Operating Shock (Gs): 63
  • 2 ms Nonoperating Shock (Gs): 300
  • Idle Acoustics (bels - sound power): 2.8
  • Seek Acoustics (bels - sound power): 3.2
  • Physical Height (in/mm) 1.028/26.1
  • Physical Width (in/mm) 4.00/101.6
  • Physical Depth (in/mm) 5.787/146.99
  • Physical Weight (lb/kg) 1.543/700

Source: Seagate Technology LLC



# Cache sizeAthlonite 2011-03-29 04:26
Why are HDD manufacturers still # footing around with less than 256MB caches on bloody large HDD's when for an extra 3~5 dollars they could be putting 256 or more MegaBytes of DDR2 Ram on there as cache
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# RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASRahul 2011-03-29 05:44
I think that Olin Coles does not know that all the P67 boards equipped with the UEFI BIOS can run 2.19+ TB hard drives natively with a supported OS like Linux, Vista, 7 etc.
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# RE: RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASDavid Ramsey 2011-03-29 07:13
Olin does know this. You did read the part about "XP-safe software solution", right?
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# RE: RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASOlin Coles 2011-03-29 08:57
Actually Rahul , I installed this hard drive on an ASUS P8P67 EVO motherboard that has the UEFI and used Windows 7 64-bit OS, and it could not format the entire 3TB... only 2.19TB. So there, try doing some research before you come online to troll.

Also, UEFI replaced the BIOS, so a "UEFI BIOS" doesn't exist; only UEFI.
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# RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASRahul 2011-03-30 04:44
*These four sites claim that UEFI enabled or LGA1155 6 Series Chipset Motherboards support Hard Drives upto 9.4 Zettabytes or 10335409301094 Gigabytes ....
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# RE: RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASOlin Coles 2011-03-30 13:57
If you initialize any hard drive with a MBR (master boot record), it will not see more than 2.19 TB. If you initialize it with GPD (GUID Partition Table), which is available in Windows 7, it will see more than 2.2 TB. It really has nothing to do with the UEFI or chipset.
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# RE: RahulAustin Downing 2011-03-30 15:46
Actually the only thing UEFI did was make it so that systems could boot off of GPT partitions. Perhaps before bashing people who write these articles you should actually do some research of your own.
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# RE: Seagate Barracuda XT 3TB Hard Drive ST33000651ASdanwat1234 2011-07-30 14:49
Sincerely Hoping Hitachi or Seagate make a 5-platter version of this with 1TB/platter before the end of 2011! It'll bring storage prices down across the board!
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