Table 1.
Estimate of the maximum size of sequence collections that can be processed.
| Excel version | Operation system | Max. memory | No. of sequences |
|---|---|---|---|
| Excel 2003 | Windows XP | 1 Gigabyte | ∼40,000 |
| Windows 7 (32/64-bit) | |||
| Excel 2007 | Windows XP | 2 Gigabyte | ∼60,000 |
| Excel 2010 (32-bit) | Windows 7 (32/64-bit) | ||
| Excel 2010 (64-bit) | Windows 7 (64-bit) | 8 Terabyte | 150,000 (max. no. of IMGT/HighV-QUEST) |
The restrictions are caused by limited addressable memory by Excel. Excel versions prior 2007 can not address more than 1 GB of memory. 32-bit versions of Excel 2007/2010 can use 2 GB of memory, while the 64-bit versions are virtually unrestricted.