The 1 GB DDR-667 MHz SDRAM DIMM Memory Module - 240-pin has the ultimate operational capacity. Increasing your computer's Synchronous Dynamic Random Access Memory (SDRAM) to 1 GB enables more applications to run simultaneously without data glitches. Its DDR2 architecture has the capacity to run at higher clock speeds than those achieved by DDR SDRAM. The 240-pin feature of DDR2 increases surface area for improved capacity, allowing you to get over 4 GBps of transfer speed. This memory module is perfect for graphic designers, computer scientists, video data analyzers, and videographers -- or anyone who simply wants the best.