In depth comparison and review of Acer Extensa 15 (EX215-51) and Acer TravelMate B3 11 (TMB311). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
Advantages and disadvantages of Acer Extensa 15 (EX215-51) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
decent battery life
adequate performance
lightweight design
average display quality
limited storage capacity
no backlit keyboard
basic graphics capabilities
Advantages and disadvantages of Acer TravelMate B3 11 (TMB311) based on its technical characteristics, features, user experience, expert reviews and price level.
durable build quality
affordable price point
efficient battery life
robust security features
lightweight design
mediocre display quality
limited storage capacity
basic graphics performance
slow processor speed
| DESIGN AND DIMENSIONS | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 36.34 cm x 25.05 cm x 1.99 cm | 29.08 cm x 21.145 cm x 2.075 cm |
| Weight | 1.9 kg | 1.4 kg |
| Colour | Shale black | Shale black |
| DISPLAY | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Screen Size (Type) | 15.6" | 11.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 1366 x 768 (WXGA) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | - |
| Image Brightness | 220 cd/m² | 250 cd/m² |
| Colour Gamut | - | 50% NTSC |
| Features | Anti-glare, ComfyView, 8 ms response rate, Narrow Border Display | Anti-glare, matte, ComfyView, Acer BluelightShield technology, 25 ms response rate |
| PROCESSOR | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| CPU | Intel Core i3 (10th Gen) 10110U / 2.1 GHz | Intel N-series N200 |
|---|---|---|
| Max Turbo Speed | 4.1 GHz | 3.7 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 4 MB | L3 - 6 MB |
| 64-bit Computing | Yes | - |
| Features | Intel Turbo Boost Technology 2.0 | Intel Smart Cache |
| MEMORY | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| RAM | 4 GB (4 GB (soldered)) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 12 GB | - |
| RAM Type | DDR4 SDRAM | LPDDR5 SDRAM |
| Form Factor | SO-DIMM 260-pin | - |
| Slots Qty | 1 | - |
| Empty Slots | 1 | - |
| STORAGE | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Main Storage Size (HDD/SSD) | 128 GB SSD - Kingston | 128 GB SSD - Kingston |
|---|
| AUDIO & VIDEO | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | Intel UHD Graphics |
|---|---|---|
| Memory Allocation Technology | Shared Video Memory (UMA) | - |
| Camera | Yes - HD | Yes - HD |
| Camera Features | - | Privacy shutter, Temporal Noise Reduction |
| Sound | Stereo speakers, two microphones | Stereo speakers, two microphones |
| COMMUNICATIONS | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Wireless | Bluetooth, 802.11a/b/g/n/ac | Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | - | Intel Wi-Fi 6E AX 211 - M.2 2230 (CNVi) |
| Network Interface | Gigabit Ethernet | - |
| Features | Wake-on-LAN (WOL) | Dual stream (2x2), MU-MIMO |
| BATTERY | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Battery Capacity (Size) | 48 Wh | 50 Wh |
| AC ADAPTER | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Input | AC 120/230 V (50/60 Hz) | - |
|---|---|---|
| Output | 45 Watt, 19 V | 45 Watt, 5 / 9 / 12 / 15 / 20 V, 3 A |
| INPUT | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | Yes | - |
| Features | Multi-gesture touch pad, Acer FineTip keyboard, precision touchpad | Multi-gesture touch pad, spill-resistant, precision touchpad, mechanically anchored keys, OceanGlass touchpad, serviceable keyboard design |
| CONNECTIONS & EXPANSIONS | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Interfaces | HDMI USB 3.1 Gen 1 2 x USB 2.0 LAN Headphone/microphone combo jack |
HDMI 2 x USB 3.2 Gen 1 USB-C 3.2 Gen 1 (supports DisplayPort Alt Mode) (DC-In combo, Power Delivery) LAN Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | - | Yes (microSD) |
| SOFTWARE | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition in S mode | Windows 11 Pro Education |
|---|
| MISCELLANEOUS | Acer Extensa 15 (EX215-51) | Acer TravelMate B3 11 (TMB311) |
|---|
| Included Accessories | Power adapter, HDD kit | USB-C power adapter |
|---|---|---|
| Security Slot Type | Kensington security slot | Kensington security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | MU-MIMO technology | Administrator password, system password, MIL-STD-810H tested |
| SAR Value | - | 1.14 W/kg (body), 1.14 W/kg (head), 1.14 W/kg (limb) |
| Manufacturer Warranty | Limited warranty - 1 year - carry-in International travellers warranty - 1 year |
Limited warranty - 1 year - carry-in International travellers warranty - 1 year |
| Model Number | 39SK | 33 |
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