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If background programs put load on the CPU or access hardware resources e.g. storage cards or BT/WiFi radios then a higher power consumption will result. Example: playing music in the background while word-processing. If the background programs are indeed idle then I would not expect any practical differences in battery life. Starting and closing programs many times can use more power than leaving them alive. I cannot follow the RAM argument. Surely the PDA cannot distinguish between memory addresses in use and not in use.
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Transcendental x50v: 4 + 8 GB SD and CF Transcend cards
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