How Much Memory Can Be Installed on My Toshiba A355d-S6930?

According to PC World, the A355d-S6930 laptop computer has a maximum memory capacity of 8 gigabyte (GB). The system requires this much memory to be divided between multiple memory slots. The memory also must be of a specific type and speed.

Size

• The Toshiba A355d-S6930 has two memory slots, each of which has a total capacity of 4 GB. These slots require the 200-pin small outline dual in-line memory modules (SODIMM) chip size.

Types

• According to Toshiba, the A355d-S6930 uses double data rate 2 (DDR2) memory. This is the second generation of DDR memory, capable of transferring twice the data per memory access as DDR1. No other type of memory will work with the A355d-S6930.

Speed Rating

• DDR2 comes in a variety of different speeds. The fastest the A355d-S6930 can handle is PC2-6400. This memory transfers data at 6400 megabytes per second (MB/s). According to the website Crucial, this also is known as "DDR2-800" because it makes 800 million transfers per second. Faster memory modules may work with the system but will not run faster than 6400 MB/s.