# 836 In-Memory Tables Save to a Stream Occupy Too Much Space

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I can understand that filing a table as a memory stream will carry some overheads but if I create a disk table with the same structure on-disk occupies 16Kb in-memory filed as a blob occupies c90Kb. Moving from filing the data as a memory stram and going back to putting the data into a memo field delinied with ¬ goes from c51Mb to c350Kb.