AMD just took the wraps of their ATI R680, RV620, and RV635 graphics cores. The new R680 consists of two 55-nm processor cores with CrossFireX support sharing the same specifications of the RV670 processor at the heart of their Radeon HD 3870 - thought to be AMD's best product of the year. The RV620 and RV635 GPU cores are nearly identical to their RV610 and RV630 processors only in a new 55-nm form.  All three of AMD's new GPUs are scheduled to launch next month.

Of course, dual-GPU technology is not new. 3dfx's flagship Voodoo 5 family also resorted to multiple processors to achieve its relatively high performance. However, imagine if you will a pair of ATI Radeon HD 3870 X2 (R680) cards running in CrossFire. Or say four with CrossFireX. Feels good, right? You won't have to wait much longer as the R680 hits in January.

Ed.note: The G92 X2 will probably be pretty good as well, but X-fire seems to give more of a boost than SLI (in one article I saw it had 96% boost).