Gigabyte blazed a now well-trodden trail with their 3D1, a graphics SKU that paired two NV43 GPUs in 6600 GT configuration, each with its own local memory store, on the same PCB. Single board SLI has come a long way since, with ASUS having a go with dual 7800 GT last October and NVIDIA themselves releasing a reference dual-chip, dual-PCB SKU for their AIBs last month with 7950 GX2.
Now it's Galaxy's turn, using a custom 6-layer PCB design and cooler to pair G73s and create the Galaxy Masterpiece dual-7600 GT.