[paulmd]

SoCs with 8GB onboard is a pretty niche chip, but other than that it's all out there. The Raspberry Pi/2 is actually a pretty poor offering - you can do better, even at the same price, The Pi Foundation just does a better job of marketing.

Specific models are the ODroid XU4, the CubieBoard or Cubietruck, the Banana Pi, etc.

They're not cheap, but the Jetson TK1 is an extremely powerful offering for this category based on the Tegra K1 SoC. You get SATA, USB 3.0, mPCIE, 1GigE, GPU with 192 Kepler cores, etc. If you need some grunt you can even do CUDA compute. Again, I'm still waiting for my Tegra-X1 based Jetson, NVIDIA :<