 The VAX 8800 and VAX 8700 support 4 to 32 MB of memory, the VAX 8500 and VAX 8550 4 to 20 MB, using the 4 MB memory module.When the 16 MB memory module was introduced, the memory capacity of the VAX 8800 and 8700 was increased to 128 MB, and that of the VAX 8550 and 8500 to 80 MB.Additionally when the 64 MB memory module was introduced, the memory capacity of the VAX 8800 and 8700 was increased to 512 MB and that of the VAX 8550 and 8500 to 320MB.