Buy Power Mac — G5

Rare "Quad Core" or high-clocked 2.7GHz models in pristine condition, sometimes including the original keyboard and mouse which adds significant value to collectors. Top Recommendations for Buyers

Refurbished or well-maintained Dual 2.0GHz to 2.3GHz units. These are the most common configurations found on sites like eBay and UsedMac .

Early 1.6GHz, 1.8GHz, and Dual 2.0GHz models frequently suffer from RAM slot failures due to issues with original lead-free solder. Hardware & Software Constraints

Some high-end models (like the Dual 2.5GHz or 2.7GHz) use liquid cooling systems that have a failure rate of up to 50%, potentially leading to catastrophic leaks.