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The best memory upgrades for your Dell Optiplex GX1 550 M (PIII) Desktop!

We've spent years amassing all the information we need to make sure you get the right memory for your Dell Optiplex GX1 550 M (PIII) Desktop. We guarantee this memory will work in your machine for the life of your machine. Your Dell Optiplex GX1 550 M (PIII) supports up to 768 MB in three slots and modules must be installed one at a time.

Takes Unbuffered-ECC or Non-ECC modules. The two types cannot be mixed. 

  Code OEM DescriptionCapacityKit OfPriceinc VAT 
expand   DIMM
256MB 3V Long PC100 DIMM x72 8ns DIMM 168pin SDRAM 311-0395 2496774 311-0395 256MB 3V Long PC100 DIMM x72 8ns DIMM 168pin SDRAM 256MB1 £39.00 £46.80 Buy
256MB 3V Long PC100 DIMM x64 8ns DIMM 168pin SDRAM 311-0786 2496776 311-0786 256MB 3V Long PC100 DIMM x64 8ns DIMM 168pin SDRAM 256MB1 £39.00 £46.80 Buy
128MB 3V Long PC100 DIMM x72 8ns DIMM 168pin SDRAM 311-0394 2496775 311-0394 128MB 3V Long PC100 DIMM x72 8ns DIMM 168pin SDRAM 128MB1 £39.00 £46.80 Buy

More information about this machine

Detailed machine info

Takes Unbuffered-ECC or Non-ECC modules. The two types cannot be mixed.

Is base memory removeable?y
Number of memory slots3
Number of memory banks3
Number of modules per bank1
Maximum installable memory768

Original Memory Configuration

more about your Dell Optiplex GX1 550 M (PIII) machine
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