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If you're moving from MetaTrader 4 to MetaTrader 5 and reusing your old VPS sizing, there's a real chance your setup is already undersized. MT5 VPS requirements aren't just “MT4 plus a bit more” MetaQuotes built MT5 on a different architecture that stores full tick data and constructs every timeframe from a single one-minute base held in memory. That single design choice is why a plan that ran MT4 smoothly can leave MT5 swapping, lagging, or missing candle closes. This guide breaks down exactly what MT5 needs in 2026 and how to size a VPS correctly the first time.
Why MT5 Needs More Than MT4 Ever Did
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MT5 was built for modern trading, unlike MT4, which was designed for older hardware. It uses more RAM, multiple CPU threads, and real tick data to deliver faster execution and better backtesting. These features improve performance but also increase resource usage, making a stronger VPS essential for smooth trading, especially when running multiple Expert Advisors. |
The gap between MT4 and MT5 resource use isn't marketing spin; it's architectural. MT4 was built in 2004 under tight memory constraints and stayed lightweight by design, typically idling at 15–45 MB per terminal with minimal charts. MT5 was engineered to use available memory rather than shrink to fit, targeting machines with far more headroom from the start. In practice, that means:
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RAM per terminal: MT4 charts with indicators loaded commonly run 20–45 MB each; a comparable MT5 terminal with charts, EAs, and history loaded routinely lands at 400–500 MB, and can climb past 1 GB if the Max Bars in Chart setting is left at its default. Community-reported testing puts the MT4-to-MT5 gap at roughly 3–10x for identical workloads.
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Data model: MT5 stores real tick data and builds all 21 timeframes from a unified M1 base, rather than caching each timeframe separately the way MT4 does.
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Threading: MT5 is 64-bit and multi-threaded, allocating a thread per Expert Advisor and per symbol. MT4 processes largely on a single thread. This means MT5 can spread load across cores, but it also means sustained per-core clock speed still matters more than raw core count for most forex EA workloads.
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32-bit is gone: MetaQuotes dropped 32-bit installers with MT5 build 3930 in September 2023, and any VPS still running 32-bit Windows can't run current MT5 builds at all.
If your current VPS was sized around “MT4 plus a chart or two", it was likely sized for a platform that uses a fraction of MT5's footprint.
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