Dell A11538587 | 1GB PC2-6400 DDR2-800MHz non-ECC Unbuffered 240-Pin DIMM Memory Module for OptiPlex GX520

Here are the technical specs for the Dell 1GB PC2-6400 DDR2-800MHz non-ECC Unbuffered 240-Pin DIMM Memory Module for Dell OptiPlex GX520:

- Memory Type: DDR2 SDRAM
- Capacity: 1GB
- Bus Speed: PC2-6400 (800MHz)
- Form Factor: DIMM 240-pin
- Error Correction: Non-ECC
- Buffered/Unbuffered: Unbuffered

Helpful notes:
- This memory module is compatible with Dell OptiPlex GX520 desktop computers.
- DDR2 SDRAM is an older type of memory, so it may not be as fast as newer DDR3 or DDR4 memory.
- Non-ECC memory does not have error correction capabilities, so it may be more prone to data errors than ECC memory.