What is the problem? If you installed DDR PC-3200 DIMM ,Max of 4GB's (2x2GB) . If you have a 32 bit OS, you software will only use 3.80GB's +/-. If you have a 64bit OS the machine will use more. If you have Shared Inegrated Graphics memory that will allocate a bit. Take a look at the specs: http://support.gateway.com/s/PC/R/6139/6139cl3.shtml Older Memory can be quite expensive, see: http://www.amazon.com/184-pin-DIMM-PC3200-Memory-Module/dp/B0002VASCM Try Ebay for used Memory Mods. 1GB's are more common.
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What is the problem? If you installed DDR PC-3200 DIMM ,Max of 4GB's (2x2GB) . If you have a 32 bit OS, you software will only use 3.80GB's +/-. If you have a 64bit OS the machine will use more. If you have Shared Inegrated Graphics memory that will allocate a bit. Take a look at the specs: http://support.gateway.com/s/PC/R/6139/6139cl3.shtml Older Memory can be quite expensive, see: http://www.amazon.com/184-pin-DIMM-PC3200-Memory-Module/dp/B0002VASCM Try Ebay for used Memory Mods. 1GB's are more common.