Whether or not these cards are actually worth producing is debatable, but you can't argue the fact that they're pretty crazy to look at. TweakTown's definitely got enough photos to satisfy your curiosity.

"The Gemini 3 features a pair of Radeon HD 2600 XT GPUs and they’re clocked at 800MHz. Each GPU is paired with 256MB of 500MHz DDR2 memory (1GHz effectively)."