This sheet is designed to help sales better understand DIMMs and how to avoid shipping or ordering the incorrect DIMM solution.

QUESTIONS TO ASK YOUR CUSTOMER

1. Do you require Buffered or Non-Buffered ?

2. Do you need non-parity, parity or ECC ?

• x64
• x72
• x72ECC
• x80ECC

3. What voltage do you need; 3.3Volt or 5Volt?

4. What type of DIMM is it?

• 72Pin SODIMM
• 144Pin SODIMM
• 168Pin DIMM
• 200Pin DIMM
• 288Pin DIMM

5. Do you require FPM (Fast-Page-Mode), EDO (Extended Data Out), or SDRAM (Synchronous)?

DETAILS DEFINED

A. Buffered DIMMs cost more to manufacture than Non-Buffered DIMMs.

1. Buffered - Technical term is Parallel Presence Detect.
2. Non-Buffered -Technical term is Serial Presence Detect.

B. Each DIMM socket is notched for either 3.3Volt and/or 5Volt, plus Buffered or Non Buffered.

1. MGV uses boards that have both notches incorporated in our design to help keep cost to a minimum.

C. DIMMs come in many forms.

1. x64 is a non-parity DIMM (This is the most common.)
2. x72 is a parity DIMM (This has very limited applications.)

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