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| Brand | Dell |
| Model | 15 3521 |
| Thickness | 33 Millimeter thickness |
| Dimensions(WxDxH) | 376 x 259 x 33 mm |
| Weight | 2.3 Kg weight |
| Colour(s) | Black |
| Operating System | DOS |
| Display Size | 15.6 Inches (39.62 cm) |
| Display Resolution | 1366 x 768 Pixels |
| Pixel Density | 100 ppi |
| Display Type | LED |
| Display Features | HD WLED True-Life Display |
| Touchscreen | No |
| Processor | Intel Core i5-3317U (3rd Gen) |
| Clock-speed | 2.6 Ghz |
| Chipset | Intel HM76 Express |
| Graphic Processor | Intel HD 4000 |
| Capacity | 4 GB |
| RAM type | DDR3 |
| Memory Slots | 2 DIMM |
| Expandable Memory | 8 GB |
| HDD Capacity | 500 GB |
| HDD Speed(RPM) | 5400 RPM |
| HDD type | SATA |
| Battery Cell | 6 Cell |
| Wireless LAN | 802.11 b/g/n |
| Wi-Fi Version | 4 |
| Bluetooth | Yes |
| Bluetooth Version | 3.0 |
| Other Networking Options | Multi Card Slot : 3-in-1 Card Reader |
| USB 2.0 slots | 3 |
| SD Card Reader | Yes |
| Ethernet Ports | 1 |
| Headphone Jack | Yes |
| Microphone Jack | Yes |
| VGA Port | Yes |
| Webcam | Yes |
| Webcam Resolution | 1 MP |
| Secondary cam(Rear-facing) | No |
| Audio Solution | HD Audio Solution |
| Speakers | Stereo speakers |
| Sound Technologies | Waves MaxxAudio 4 |
| In-built Microphone | Yes |
| Microphone Type | Digital Microphone |
| Optical Drive | DVD+/-RW Drive |
| Drive Type | DVD Writer |
| Pointing Device | Touchpad |
| Keyboard | Standard Keyboard |
| Fingerprint Scanner | No |
| Warranty | 1 Year |
| Lockport | Yes |
| Sales Package | Laptop, Battery, AC Adapter, User Guides and Manuals |
Lesser thickness:
31.3 Millimeter vs 33 Millimeter
More hard-disk capacity:
750 GB vs 500 GB
Faster Processor:
3278 vs 3121
Slower Processor:
2674 vs 3121
More weight:
2.37 Kg vs 2.3 Kg
Common Features
Faster Processor:
3997 vs 3121
Common Features
More thickness:
35.8 Millimeter vs 33 Millimeter
Slower Processor:
1564 vs 3121
More weight:
2.45 Kg vs 2.3 Kg
Common Features
Lesser thickness:
31.3 Millimeter vs 33 Millimeter
Slower Processor:
2571 vs 3121
Fewer USB 2.0 ports:
2 vs 3
Common Features
More hard-disk capacity:
640 GB vs 500 GB
Lesser weight:
2.1 Kg vs 2.3 Kg
More thickness:
33.3 Millimeter vs 33 Millimeter
