Last year AMD released their new Radeon HD 5800 Series of graphics cards which quickly became a big success due to the numerous improvements made over previous generations. Up to now all cards available from all manufacturers were reference design cards which means they were all made to the same specifications, using the same components and then a sticker was added on the cooler depending on the AIB.
Now Powercolor is one of the first AIBs to release a custom designed HD 5870 card that uses both a non-reference cooler and a non-reference PCB design. While this allows for considerable production optimizations and reduce manufacturing cost it also introduces the risk that the product might not work as optimally as intended by AMD.
Powercolor is actually going beyond the reference design specs and offers higher clock speeds of 875 / 1225 vs. 859 / 1200 on the normal cards. While not making a huge difference it should still give a little extra performance boost to the card.
HD 4870 X2
HD 5870 PCS+
|Shader units||2x 800||240||1440||1600||1600||2x 240|
|ROPs||2x 16||32||32||32||32||2x 28|
|GPU||2x RV770||GT200b||Cypress||Cypress||Cypress||2x GT200b|
|Transistors||2x 956M||1400M||2154M||2154M||2154M||2x 1400M|
|Memory Size||2x 1024 MB||1024 MB||1024 MB||1024 MB||1024 MB||2x 896 MB|
|Memory Bus Width||2x 256 bit||512 bit||256 bit||256 bit||256 bit||2x 448 bit|
|Core Clock||750 MHz||648 MHz||725 MHz||850 MHz||875 MHz||576 MHz|
|Memory Clock||900 MHz||1242 MHz||1000 MHz||1200 MHz||1225 MHz||999 MHz|