In October 2010, AMD released their Radeon HD 6850 and HD 6870 which are based on the Barts GPU core. Today AMD adds a third Barts-based model to their lineup in form of the Radeon HD 6790.
HD 6790 comes with an odd model number that we haven't seen from AMD before. It basically means "the fastest midrange card. In terms of performance we can expect significantly reduced performance compared to the HD 6870 and HD 6850, which have 1120 and 960 shaders - AMD's Radeon HD 6790 comes with 800. Compared to the HD 5770 performance should be increased by higher clocks and architectural improvements over Juniper. Price-wise AMD is communicating around $150 for their new Radeon HD 6790 which seems to match with what we have seen on some early postings of online merchants.
GTX 550 Ti
GTX 560 Ti
|Memory Size||1024 MB||1024 MB||1024 MB||1024 MB||768 MB||1024 MB||1024 MB||1024 MB||1280 MB||1024 MB||1024 MB|
|Memory Bus Width||128 bit||128 bit||256 bit||192 bit||192 bit||256 bit||256 bit||256 bit||320 bit||256 bit||256 bit|
|Core Clock||783 MHz||850 MHz||840 MHz||900 MHz||675 MHz||675 MHz||775 MHz||725 MHz||607 MHz||900 MHz||823 MHz|
|Memory Clock||900 MHz||1200 MHz||1050 MHz||1026 MHz||900 MHz||900 MHz||1000 MHz||1000 MHz||837 MHz||1050 MHz||1002 MHz|