Lineup
The chipset has several variants, they are summarized below, sorted by their northbridge codename.
The first one is the RS690 which is the basic chipset and implemented now as 690G. The second one is the RS690C which is a simplified version of 690G and without TMDS support and named as 690V. The third one in the series is the RS690M for mobile platforms, named M690. The fourth one is the RS690MC, a simplified version of M690 and without TMDS support, called M690V. Another one in the lineup is the RS690T, another variant to the M690 chipset with a local frame buffer (see below). A member for the embedded systems, the M690E, is basically a M690T with different display output configurations.
Read more about this topic: AMD 690 Chipset Series