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| Product | Samsung 840 Pro (512GB) | Samsung 840 Pro (256GB) | Samsung 840 (500GB, SSD) | Intel SSD 520 Series (240GB, OEM) |
| Price | $434.99 to $699.20 | $229.00 to $310.12 | $327.99 to $539.85 | $241.99 to $359.32 |
| CNET editors' rating | 4 stars | 4 stars | 3.5 stars | 4 stars |
| Average user rating | 0 stars | 5 stars | 0 stars | 0 stars |
| Release date | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Bottom line | 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 Samsung 840 Pro lives up to its name: it's a top-notch solid-state drive for professionals with a price to match. | The Samsung 840 series is an excellent entry-level solid-state drive for budget and general users, but not really a good buy for advanced or professional users. | If priced a little lower, the Intel 520 Series SSD would be an ideal investment for those who want to greatly improve their computer's overall performance. For now, it's still an excellent drive. |
| Product Description | Samsung 840 Pro Series MZ-7PD512 - Solid state drive - 512 GB - Serial ATA-600 | Samsung 840 Pro Series MZ-7PD256 - Solid state drive - 256 GB - Serial ATA-600 | Samsung 840 Series MZ-7TD500 - Solid state drive - 500 GB - Serial ATA-600 | Intel Solid-State Drive 520 Series - Solid state drive - 240 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 | 512 GB | 256 GB | 500 GB | 240 GB |
| Form Factor | 2.5" Ultra Slim Line | 2.5" Ultra Slim Line | 2.5" Ultra Slim Line | 2.5" x 1/8H |
| Interface | Serial ATA-600 | Serial ATA-600 | Serial ATA-600 | Serial ATA-600 |
| Data Transfer Rate | 600 MBps | 600 MBps | 600 MBps | 600 MBps |
| Features | TRIM support , S.M.A.R.T. Garbage Collection technology , 256-bit AES Hardware Full Disk Encryption (FDE) | TRIM support , S.M.A.R.T. Garbage Collection technology | TRIM support , S.M.A.R.T. Garbage Collection technology | Native Command Queuing (NCQ) , S.M.A.R.T. 128-bit AES |
| Dimensions (WxDxH) | 2.7 in x 3.9 in x 0.3 in | 3.9 in x 0.3 in | 3.9 in x 0.3 in | 2.8 in x 3.9 in x 0.4 in |
| Weight | 2.2 oz | 2.4 oz | 2.4 oz | 2.8 oz |
| Manufacturer Warranty | 5 years warranty | 5 years warranty | 3 years warranty | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Intel SSD 520 Series compare (480GB, OEM)
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