Club 3D recently unveils its HD 7870 2GB jokerCard, however, its frequencies and stream processors are different from those of the common HD 7870.
Pictairn XT-based HD 7870 features 20 CUs, 1280 steam processors, and the frequency is 1000MHz, while this Club 3D HD 7870 Joker boasts 2GB memory, 1536 stream processors, core/Boost frequencies of 925MHz/975MHz.
So the Club 3D HD 7870 model is based on Tahiti LE core, features 24 CUs, which is between HD 7950 and HD 7870. In addition, it packs memory interface of 256-bit and memory frequency of 1500MHz (6GHz effective). As for performance, the card delivers 15% faster performance compared to the standard GeForce GTX 660.