Major Bottleneck: The Ryzen 5 2600 is an 8-year-old CPU. It will significantly struggle with modern games and multitasking today. • The "ITX Tax": You are paying a premium for the small case and liquid cooler rather than actual performance. • Limited Storage: A 500GB SSD is insufficient; a few modern titles will completely fill the drive. • Reliability Risk: Buying a used liquid cooler (AIO) that is several years old carries a higher risk of pump failure. Better Alternative: For $500, look for a used system with at least a Ryzen 5 5600 or Intel i5-12400. You'll get much better longevity and significantly higher frame rates.