Sony VAIO PCV LX Series Desktop Computers are easy and affordable to upgrade. The computer may be upgraded with up to 512 MB of memory. The Sony computers use SDRAM, which is an older technology that is extremely affordable. The computers have 2 memory slots, and each one is capable of holding up to 256 MB of RAM. Memory is packaged into durable DIMMs, which are easily inserted into the memory slots by knowledgeable computer owners.