Postgres Windows Driver Guide

The 64-bit driver is significantly faster. Always use it unless legacy constraints force 32-bit.

| Operation | 32-bit Driver | 64-bit Driver | Native SQL Server (for context) | | :--- | :--- | :--- | :--- | | | 1.2 sec | 0.9 sec | 0.8 sec | | Large SELECT (100k rows) | 2.1 sec | 1.4 sec | 1.1 sec | | Metadata enumeration | Slow | Fast | Instant | postgres windows driver

Executive Summary Connecting Windows applications to PostgreSQL has historically been the "second-class citizen" compared to Linux/macOS. However, over the last five years, the PostgreSQL Windows drivers have matured significantly. Today, they offer enterprise-grade stability, Unicode support, and 64-bit performance that rivals native SQL Server drivers. The 64-bit driver is significantly faster