Similarities of Surface Pro 3 and 4
As mentioned at the beginning, these two devices are very similar in appearance. (more details in here)
Body
The color of both generations is silver. The body is made of aluminum alloy, which is very resistant to impact and pressure. In both Surface Pro 3 and 4 devices, the body is designed to be highly scratch-resistant. Fingerprints do not remain on them. They also do not absorb dust.
Ports and ways of communication
Similar ports and sensors are used in both generations.
Surface Pro 3
1 USB3, 1 DisplayPort
Audio Connections: 3.5 mm audio combo, Card Reader: microSD
Wi-Fi 5: IEEE 802.11 a / b / g / n / ac compatible
Bluetooth Wireless 4.0 technology
Sensors: Ambient light sensor, accelerometer, gyroscope, Magnetometer
Surface Pro 4
1 USB3, 1 DisplayPort
Audio Connections: 3.5 mm combo, Card Reader: microSD
Wi-Fi 5: IEEE 802.11 a / b / g / n / ac compatible
Bluetooth Wireless 4.0 technology
Sensors: Ambient light sensor, accelerometer, gyroscope, Magnetometer
There is practically no change in the ports. In addition, you can increase the Surface Pro 3 and 4 ports by installing an upgrade dock.
Audio system
Both generations use a powerful sound card. The model of the sound card is Realtek High Definition Audio. Both models have Ù¢ super speakers that can greatly amplify the sound.
Both devices are completely silent and no sound is heard during processing.
Battery and charger
One of the reasons for the development of Surface Pros is the increased use of Surface Pro. For this reason, every time Microsoft improves the Surface Pro batteries, the user tries to use the device more time.
Surface Pro 3
Its battery power is 42 watts per hour. The battery is made of lithium-ion. In video playback mode, it can keep the Surface Pro 3 on for up to 10 hours.
The Surface Pro 3 charger weighs about 300 grams. It is very low consumption and can fully charge the battery in about 2 hours. This charger is designed based on Fast Charging. This means that it can charge half the battery in less than 1 hour. The power of the charger is 36 watts.
Surface Pro 4
The Surface Pro 4 battery has only 38 watts of power. The battery is made of lithium-ion. In video playback mode, it can power the device for up to 9 hours.
The Surface Pro 4 charger weighs about 300 grams. The charger has a very good feature. It can fully charge the battery in about 2 hours. The power of the charger is 36 watts.
reference: Wikipedia