If you’re shopping for a Raspberry Pi 5, I’d strongly consider stepping up to the 16GB model—especially if your plan includes an AI HAT, heavier multitasking, or squeezing the most out of emulation/gaming. While the 8GB version is both functional and durable. The 8GB version is absolutely excellent for the majority of use cases (general Linux projects, home server tasks, Kali, etc.), but once you start stacking bigger workloads, the extra RAM gives you more breathing room and a noticeably smoother experience. On pricing: yes, the 16GB usually carries a small premium, but in my experience that difference is justified—particularly when it’s paired with fast shipping and you want to get building immediately. A few practical notes that will save you headaches: Power supply matters—big time. The Pi 5 really wants a proper 5V/5A supply. Underpower it and you’re asking for brownouts, instability, and random weird behavior. If you’re running from a battery, 5V/3A can work, but you’ll need to be smart about it: use a powered USB hub for peripherals so you’re not dragging the Pi down when you plug in devices. For the first boot, using a TV/monitor setup can make life easier—especially until you’ve updated to the latest firmware. Don’t skip active cooling. The Pi 5 can run hot under load, and throttling will undo a lot of the performance you’re paying for. Use a case. There are tons of options—just get something, even if it’s a simple silicone base. Protection + airflow is the goal. Finally, if you’re buying the Pi 5 specifically for penetration testing, plan on adding a compatible external Wi-Fi adapter. The built-in Broadcom wireless is fine for normal connectivity, but it’s not the right tool for packet injection/monitor-mode workflows—an external adapter will make your life much easier. One of the biggest perks of the Raspberry Pi 5 is how many operating systems you can run, depending on what you want to build: Raspberry Pi OS (64-bit) – the official, best-supported daily driver Ubuntu (Desktop/Server) – great for productivity, dev work, and servers Kali Linux – popular for security testing and training labs Retro gaming OS options – RetroPie, Recalbox, Batocera (awesome for emulation setups) Media center builds – LibreELEC/OSMC for a dedicated TV/streaming box Lightweight Linux distros – faster, lean builds for specific projects and low overhead Android-based builds (community-supported) – for an Android-style experience on Pi hardware No matter your goal—desktop, server, security lab, arcade console, or media box—the Pi 5 has an OS path that fits. Overall: 8GB is a fantastic value and handles most projects effortlessly, but if you’re aiming for AI, more demanding workloads, or a “buy once, cry once” setup, the 16GB model is the smarter long-term pick.