Processors are bought here for two reasons: building systems, and upgrading or repairing the ones already in service. The selection spans desktop and server CPUs across the socket generations organizations actually run, including the older parts that keep an existing fleet alive.
Compatibility is absolute: the CPU must match the motherboard's socket and be supported by its firmware, and on servers the platform generation as well. Check the support list before comparing prices, because a faster processor the board cannot run is worth nothing. For server upgrades, remember that per-core software licensing can make a lower-core-count, higher-clock part the cheaper machine overall. Boxed retail and tray/OEM versions of the same silicon differ in warranty and included cooling, so match the version to how it will be deployed. COLAMCO quotes processors for system builds, spares stock, and fleet upgrades for business, government, and education customers.