Do not buy a "Core 2 Duo" or "Core 2 Quad" upgrade. Take that money and put it toward a modern budget CPU (like an Intel i3-12100 or AMD Ryzen 5 5600) or a used office PC. The performance difference will be night and day.
/ Q9550 Moving to a quad-core chip is the single biggest leap you can make. The Core 2 Quad Q9400 Go to product viewer dialog for this item. intel pentium dual cpu e2160 upgrade
The Intel Pentium Dual-Core E2160 Go to product viewer dialog for this item. Do not buy a "Core 2 Duo" or "Core 2 Quad" upgrade
Depending on your motherboard's compatibility, these are the best performance-per-dollar options: Intel Core2 Duo E8400 vs Pentium Dual E2160 - UserBenchmark intel pentium dual cpu e2160 upgrade