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| Product | OCZ Vertex 4 SSD (256GB) | Samsung 840 Pro (256GB) | OCZ Vector Series SSD (256GB, SATA III, 2.5-inch) | Samsung 840 Pro (512GB) |
| Price | $281.90 to $379.19 | $229.00 to $310.12 | $249.99 to $388.75 | $434.99 to $699.20 |
| CNET editors' rating | 4 stars | 4 stars | 4 stars | 4 stars |
| Average user rating | 5 stars | 5 stars | 0 stars | 0 stars |
| Release date | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Bottom line | The OCZ Vertex 4 is an excellent replacement drive for a standard-size laptop or desktop. | The Samsung 840 Pro lives up to its name: it's a top-notch solid-state drive for professionals with a price to match. | The OCZ Vector Series SSD would make a great investment for those moving on from using a hard drive as the main drive of their system. | The Samsung 840 Pro lives up to its name: it's a top-notch solid-state drive for professionals with a price to match. |
| Product Description | OCZ Vertex 4 Series Solid state drive - 256 GB - Serial ATA-600 | Samsung 840 Pro Series MZ-7PD256 - Solid state drive - 256 GB - Serial ATA-600 | OCZ Vector Series Solid state drive - 256 GB - Serial ATA-600 | Samsung 840 Pro Series MZ-7PD512 - Solid state drive - 512 GB - Serial ATA-600 |
| Packaged Quantity | 1 | 1 | 1 | 1 |
| Type | Solid state drive - Internal hard drive | Solid state drive - Internal hard drive | Solid state drive - Internal hard drive | Solid state drive - Internal hard drive |
| Capacity | 256 GB | 256 GB | 256 GB | 512 GB |
| Form Factor | 2.5" x 1/8H | 2.5" Ultra Slim Line | 2.5" Ultra Slim Line | 2.5" Ultra Slim Line |
| Interface | Serial ATA-600 | Serial ATA-600 | Serial ATA-600 | Serial ATA-600 |
| Data Transfer Rate | 600 MBps | 600 MBps | Info unavailable | 600 MBps |
| Features | TRIM support , S.M.A.R.T. Native Command Queuing (NCQ) , 128/1K bit BCH ECC Background Garbage Collection , 256-bit AES Indilinx Ndurance 2.0 Technology Dynamic and Static Wear Leveling | TRIM support , S.M.A.R.T. Garbage Collection technology | TRIM support , S.M.A.R.T. Native Command Queuing (NCQ) , 28/1K bit BCH ECC Idle Time Garbage Collection | TRIM support , S.M.A.R.T. Garbage Collection technology , 256-bit AES Hardware Full Disk Encryption (FDE) |
| Dimensions (WxDxH) | 2.8 in x 3.9 in x 0.4 in | 3.9 in x 0.3 in | 2.7 in x 3.9 in x 0.3 in | 2.7 in x 3.9 in x 0.3 in |
| Weight | 3.6 oz | 2.4 oz | 4.1 oz | 2.2 oz |
| Manufacturer Warranty | 5 years warranty | 5 years warranty | 5 years warranty | 5 years warranty |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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OCZ Vertex 4 SSD compare (256GB)
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