Only Gen III servers accept 8GB DIMMs. How to check my generation? Pull out your service tag. There will be roman numerals located on the tag. Your system needs to be III in order to work with 64GB of RAM.
I and II max out at 32GB RAM with 4GB DIMMs. The item "Lot of 100 x 8GB PC2-5300F DDR2 Fully Buffered Server Memory RAM for Dell 1950" is in sale since Friday, November 23, 2018. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Memory (RAM)". The seller is "cloudninjas" and is located in Houston, Texas.
This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Uruguay.