On paper 64-bit applications sounds great! If we compare a 32-bit processor against a 64-bit processor, the 64-bit processor can process a larger set of data, while also being faster and more responsive. The technology world is trending towards 64-bit. In addition, the step-up to 64-bit enables greater compute capabilities that are needed to meet the demands of today's greater workloads. Other benefits also include, but are not limited to:
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Access to larger amounts of memory (and thus, less disk swapping);
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A richer instruction set (i.e. more CPU registers – for faster handling of arrays and passing data without using a "stack");
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Enhanced security features (e.g. Kernel Patch Protection, Support for hardware-backed Data Execution Protection (DEP), Mandatory driver signing);
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Greater precision in 64-bit numbers and calculations;
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Interoperability (supports both 64 & 32-bit operations);
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Policy compliance with corporate requirements; and
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Performance increase in calculations per second.