Many brokers still support legacy hardware. If you have an old PC dedicated solely to running a single trading bot (EA), the 32-bit version is lighter on CPU resources.
: As of mid-2025, the minimum supported version for MetaTrader 5 is Build 4755 , which is exclusively 64-bit.
If you have a modern PC (Windows 10 or 11), you should almost certainly be using the version. So why use 32-bit? metatrader 5 32bit
: Build 2190 was the final official version to support 32-bit operating systems.
Some ultra-cheap VPS (Virtual Private Server) plans still offer 32-bit Windows Server images. These are cheaper and consume less disk space, making them viable for running a single robot. Many brokers still support legacy hardware
If upgrading to a 64-bit operating system is not currently possible, you still have options for accessing the MT5 environment:
The biggest reason is . Some banks, proprietary indicators, or custom liquidity bridges were coded a decade ago as 32-bit DLL files. Those DLLs will not load in a 64-bit MT5 environment. If you rely on a legacy signal feed, you must run 32-bit. If you have a modern PC (Windows 10
If you are using custom Expert Advisors (EAs) or indicators:
: If you attempt to use an old 32-bit build (like 2190), it will likely fail to connect to modern broker servers, as they require updated security protocols. Why the Shift to 64-Bit?
| Feature | 32-bit Version (Legacy) | 64-bit Version (Standard) | | :--- | :--- | :--- | | | Limited to ~2-4 GB RAM. | Utilizes nearly unlimited RAM. | | Processing Speed | Slower calculation speeds; cannot utilize modern CPU cores efficiently. | Up to 10-15% faster in strategy testing and optimization. | | Multitasking | Prone to crashing when opening multiple charts or heavy indicators. | Stable with hundreds of charts and complex EAs. | | Security | No longer receives security patches; vulnerable to exploits. | Actively patched and updated. |