Hardware

Hardware

Describe the following:

• Different Raspberry Pi's
• Cost & Specs

Raspberry Pi 4 Model B Specifications

• Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
• 1GB, 2GB or 4GB LPDDR4-3200 SDRAM (depending on model)
• 2.4 GHz and 5.0 GHz IEEE 802.11ac wireless, Bluetooth 5.0, BLE
• Gigabit Ethernet
• 2 × micro-HDMI ports (up to 4kp60 supported)
• 4-pole stereo audio and composite video port
• H.265 (4kp60 decode), H264 (1080p60 decode, 1080p30 encode)
• OpenGL ES 3.0 graphics
• Micro-SD card slot for loading operating system and data storage
• 5V DC via USB-C connector (minimum 3A*)
• 5V DC via GPIO header (minimum 3A*)
• Power over Ethernet (PoE) enabled (requires separate PoE HAT)

You can find the full specification list at the Raspberry Pi official website here.

Raspberry Pi Overclocking

OVERCLOCK AT YOUR OWN RISK!

General Raspberry Pi Information

• Stock CPU speed: 1.5 GHz
• Stock GPU speed: 500 Mhz

Overclocking Requirements

• CPU, RAM & USB Heatsinks
• Small Fan (mounted on top of raspberry pi)

Note: Heat sinks and fan "hats" may vary for each Raspberry Pi version.

Known Overclocking Limitations

• Max Over Voltage: 6
• Max CPU speed: 2.147 GHz
• Max GPU speed: 750 Mhz

Overclocking

1. Connect your microSD card to a PC
2. Open file boot/config.txt inside the microSD
3. Modify the file by adding the following under your Raspberry Pi respective version:

[pi4]
over_voltage=6
arm_freq=2000
gpu_freq=600

Truth is, you can start with over_voltage=2 (+0.05 V) then increase it by a step of 1 until the Raspberry Pi boots up properly.

Note: Every over_voltage increase represents a voltage-load increase of $over_voltage * 0.025V$. For instance, when over_voltage=3, total voltage load increases by 0.075 V.