Interface

• The first video graphics cards were actually computer chips, according to JRank.org. Then Intel created accelerated graphic ports (AGP) allowing graphic cards to interact directly with a processor. Peripheral Component Interconnect (PCI) slots were introduced and dwarfed AGP slots in data transfer rates. As of August 2010, PCI Express slots are the latest graphics card interface.
  
  

Types

• Older video graphics cards will have either DDR or DDR2 types of RAM. Newer cards use GDDR3, GDDR4 or GDDR5 RAM.
  
  

Size

• Older video graphic cards were limited to 128 MB of memory. Now, 256 MB and 512 MB graphic cards have become standard when opting out of integrated video graphics. There are 1 GB and 2 GB cards available.