The Kingston PC2 6400 is a DDR2 RAM that boosts the speed of your desktop computer�s. With a memory of 4 GB, this Kingston RAM module enables multiple applications to run concurrently without developing any glitches. With a memory speed of 800 MHz, this DDR2 RAM is suitable for various mobile systems. Additionally, the Kingston PC2 6400 is a 200-Pin RAM and offers compatibility with the Apple iMac. Moreover, the synchronous interface of this RAM module allows for a more complex chip pattern, resulting in better performance and higher speeds. If you are looking for a RAM that delivers decent performance, this Kingston RAM module will certainly meet your expectations.