How many bits of information does a single cell of a memory chip on a 256MB PC2700 DDR module hold?

Answer 1

Edited: 10/02/09 12:32 AM PDT

The previous answer here said simply:

"8 bits"

....which might be correct for the rate of data transfer (per cell), but that doesn't answer the question!

The way I finally figured it:

A 256MB (mega BYTE) module has 8 cells, (or chips).

256/8 = 32MB per cell

To convert BYTES to BITS, multiply by 8; (8 BITS to a BYTE).

32MB (x8) = 256Mb (mega BITS) per cell.

To convert MEGA bits to BITS*:

*(when referring to data storage, as in this case...)

1Mb = 1048576 bits

Therefore, the cell being 256Mb = (256 x 1048576) =

268,435,456 bits per cell

Formula: (256 x 1024 x 1024)

References and credits:

http://www.bit-calculator.com

http://forums.techguy.org/hardware/659955-memory-question.html

How_many_bits_of_information_does_a_single_cell_of_memory_chip_a_memory_chip_on_a_256MB_PC2700_DDR_module_hold

Answer 2

A 256MB PC2700 DDR module has 256 million bytes of memory. Each cell of a memory chip typically holds one bit of information, so a single memory cell on this module would hold 1 bit.