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 11 February 2011
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 Dr. Adrian Wong
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Microsoft Windows 7 SSD Performance Comparison Rev. 2.1
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SSD Support In Microsoft Windows 7

Microsoft Windows 7 is the first Windows operating system to include native support for solid state drives (SSDs). SSD-specific features that ship in Windows 7 include :

  • SSD Identification - SSDs are identified as non-rotating media, which allows Windows 7 to turn drive defragmentation off. This improves drive lifespan by reducing the number of writes.

  • TRIM Support - Windows 7 will inform the SSD which data blocks are no longer in use and can be deleted internally. This reduces the amount of internal fragmentation which can greatly slow down write operations.

  • Enhanced Wear-Leveling - By eliminating merge operations for all deleted data blocks, and preserving the unused storage area as much as possible.

  • Early Garbage Collection - Improves write speeds, especially when the SSD storage capacity is fully utilized.

These SSD-specific optimizations make Windows 7 the best operating system for solid state drives. But just how much of a boost in SSD performance can we expect from upgrading to Windows 7? That's exactly what we intend to find out.

 

The Testbed

Processors

Intel Core i7-965 Extreme Edition

Motherboard

ASUS P6T Deluxe (Intel X58 Express)

Memory

Three Kingmax 2 GB DDR3-1333 modules

Graphics Card

Galaxy GeForce GTX 260+ OC

Hard Disk Drives

256 GB Western Digital SiliconEdge Blue
160 GB Intel X25-M G2 (34 nm)
128 GB Super Talent UltraDrive GX
120 GB OCZ Vertex 2 (E)
90 GB Corsair F90
64 GB Kingston SSDNow V+ (Gen 2)
60 GB OCZ Agility 2 (E)

30 GB Kingston SSDNow V (Gen 2)

Operating System

Microsoft Windows 7 64-bit
Microsoft Windows Vista 32-bit

 

The Solid State Drives

Model

Segment

Capacity

NAND Type

Buffer

Interface

Additional
Details

Western Digital SiliconEdge Blue

2.5" Mobile

256 GB

MLC

64 MB

SATA 3 Gb/s

Full Review
Lowest Price

Intel X25-M (34 nm)

2.5" Mobile

160 GB

MLC

NA

SATA 3 Gb/s

Full Review
Lowest Price

Super Talent UltraDrive GX

2.5" Mobile

128 GB

MLC

64 MB

SATA 3 Gb/s

Full Review
Lowest Price

OCZ Vertex 2 (E)

2.5" Mobile

120 GB

MLC

64 MB

SATA 3 Gb/s

Full Review
Lowest Price

Corsair F90

2.5" Mobile

90 GB

MLC

NA

SATA 3 Gb/s

Full Review
Lowest Price

Kingston SSDNow V+ (Gen 2)

2.5" Mobile

64 GB

MLC

128 MB

SATA 3 Gb/s

Full Review
Lowest Price

OCZ Agility 2 (E)

2.5" Mobile

60 GB

MLC

NA

SATA 3 Gb/s

Full Review
Lowest Price

Kingston SSDNow V (Gen 2)

2.5" Mobile

30 GB

MLC

64 MB

SATA 3 Gb/s

Full Review
Lowest Price

 

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Introduction

Introduction

Transfer Rate
& Access Time

4 KB Random Read + Write Performance

512 KB Random Read + Write Performance

4 KB Sequential Read + Write Performance

512 KB Sequential Read + Write Performance

IOPS Scaling

4 KB Random Read + Write Scaling

512 KB Random Read + Write Scaling

4 KB Sequential Read + Write Scaling

512 KB Sequential Read + Write Scaling

Conclusion

Conclusion (With Summary Of Results)



 
   
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