Vou me intrometer na discussão com isso:
Anandtech Escreveu:From a performance standpoint, the Radeon HD 3870 comes out slightly ahead by outperforming the 9600 GT in one more game (and two benchmarks). The 9600 GT, although winning fewer benchmarks, manages a higher margin of victory in those games that it does win in. Performance issues in Quake Wars and Call of Duty 4 give the nod to NVIDIA, especially when you take into account a lower average selling price for the 9600 GT.
Looking back at our power consumption numbers, the 9600 GT does run a bit cooler under load, while the 3870 has a lower thermal envelope at idle. Neither card has a passively cooled reference design, so HTPCers will either want to look for something aftermarket or go further down the food chain for a truly silent PC.
Sendo assim, penso que caso se pense numa possivel situaçao multi-gpu (em upgrade ou noutro caso), a HD3870 é uma melhor escolha. Nos outros casos todos, trata-se meramente de uma escolha entre bundles, fabricantes, preços ou simplesmente gosto pessoal