| Attribute |
HP ProBook ProBook 4520s Notebook PC (WD842EA) × | 
Toshiba Satellite L635-10K (PSK04E-01U00RTE) × |
| General | | |
| Model | HP ProBook ProBook 4520s Notebook PC | Toshiba Satellite L635-10K |
| Product code | WD842EA | PSK04E-01U00RTE |
| Design | | |
| Product colour | Black | Black, Red |
| Form factor | - | Clamshell |
| Brand | HP | Toshiba |
| Family | ProBook | Satellite |
| Series | 4000 | - |
| Model name | ProBook 4520s Notebook PC | L635-10K |
| Part number | WD842EA | PSK04E-01U00RTE |
| Release year (year) | 2010 | 2017 |
| Processor | | |
| Processor manufacturer | - | Intel |
| Processor family | 3rd gen Intel Core i3 | 4th gen Intel Core i5 |
| Processor frequency (GHz) | 2.3 | 2.4 |
| Processor boost frequency (GHz) | - | 2.7 |
| Processor model | i3-350M | i5-450M |
| Processor cores | 2 | 2 |
| Processor threads | 4 | 4 |
| Processor lithography (Nm) | 32 | 32 |
| Processor socket | BGA 1288 | Socket 988 |
| Processor cache (MB) | 3 | 3 |
| Memory | | |
| Internal memory type | - | DDR3-SDRAM |
| Maximum internal memory (GB) | 8 | 8 |
| Memory clock speed (MHz) | 1,333 | 1,066 |
| Internal memory (GB) | 3 | 4 |
| Display | | |
| Display diagonal (inch) | 15.6 | 13.3 |
| Panel type | - | TFT |
| HD type | - | HD |
| LED backlight | + | + |
| Touchscreen | - | - |
| Display resolution | 1366 x 768 pixels | 1366 x 768 pixels |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | Intel HD Graphics | AMD Mobility Radeon HD 5145 |
| Discrete graphics adapter | + | + |
| On-board graphics adapter base frequency (MHz) | 500 | 500 |
| On-board graphics adapter model | Intel HD Graphics | Intel HD Graphics |
| Storage | | |
| Total storage capacity (GB) | 320 | 500 |
| Card reader integrated | + | + |
| Storage media | HDD | HDD |
| Optical drive | + | + |
| Networking | | |
| Wi-Fi standards | - | - 802.11b
- 802.11g
- wi-fi 4 (802.11n)
|
| Bluetooth | + | + |
| Ethernet LAN | - | + |
| Ethernet LAN data rates (Mbit/s) | - | |
| Wi-Fi | + | + |
| Bluetooth version | 2.1+EDR | 2.1+EDR |
| Ports and interfaces | | |
| USB 2.0 ports | 3 | 2 |
| Docking connector | - | - |
| DVI port | - | - |
| HDMI ports quantity | 1 | 1 |
| Ethernet LAN (RJ-45) ports | 1 | 1 |
| Audio | | |
| Built-in microphone | - | + |
| Camera | | |
| Front camera | - | + |
| Keyboard | | |
| Numeric keypad | - | - |
| Software | | |
| Operating system installed | Windows 7 Professional | Windows 7 Home Premium |
| Operating system architecture (bit) | - | 64 |
| Battery | | |
| Battery life (max) (h) | - | 4.2 |
| Weight and dimensions | | |
| Weight (kg) | 2.39 | 2.1 |
| Depth (mm) | 249.6 | 221 |
| Width (mm) | 371.8 | 329 |
| Security | | |
| Cable lock slot | + | + |