How to get 8GB of memory?

Hi.

Sorry, could you clarify the model number? Are you sure it has an "M" in it? I'm guessing it's a 730 desktop, and not one of the M laptops.

You should have 2 Memory Expansion Cards (MEC's). Each supports up to 8 DIMM's at up to 1GB each. So it should take 16GB without a BIOS flash.

I tried to find memory information in the online manuals, but could not.
http://support.dell.com/support/edocs...

Here's a copy/paste from the internal docs about memory.

Memory Modes
The memory controller only supports PC100 registered SDRAM DIMMs. The memory sub-system can operate in two (2) different modes.

Interleaved Mode: Two (2) MECs installed. This configuration offers the highest performance by dividing the total system RAM across two (2) MECs. This reduces the probability of wait states, thus increasing speed on sequential accesses. To operate in interleaved mode, BOTH MECs MUST BE USED WITH AT LEAST THE TOP FOUR (4) DIMM SITES POPULATED ON EACH MEC.

Single-port Mode: One (1) MEC installed. The single MEC responds to all memory addresses.
DIMM Installation Sequence
The DIMMs must be installed within groups of four (4). Each board has eight (8) DIMM sites. The top four (4) DIMM sites on each board form the top, or right, stack while the bottom four (4) DIMM sites on each board form the bottom, or left stack. If a single memory board is used, a minimum of four (4) DIMMs must be populated in the top stack.

For optimum performance, both memory cards should be installed with the top four (4) DIMM slots populated with the same size, type, and brand of memory. This recommendation utilizes both memory ports and achieves maximum memory bandwidth.