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The DS should have no problem with the 3D content, and should be even faster and more accessible when it comes to the prerendered backgrounds. Quite the opposite, many characters and enemies only had gourad shading (a single color with lightning information), which the DS is perfectly capable of. Final Fantasy VII was never known for it's high polycount or it's good textures. What does this mean? It means that the PSX can do better 3D, and the DS can do better and faster 2D. The PS1 has video memory of 1MB, the DS has 656KB.The DS can put out a maximum of 120.000 such polygons, but has a more powerful 2D GPU and 4MB of RAM.

The PSX has a relatively powerful, easy to program GPU with a maximum of 180.000 texture-mapped and light-sourced polygones, and it has 2MB RAM.This isn't all that important and the DS is not "twice as fast" as the PSX, because what matters is the GPU and the 3D rendering capabilities. The PSX has a 33mhz CPU, the DS has 67mhz.First, let's take a look at the DS specs in comparison to the PSX: So no way the game could fit onto a 256 card, right? Wrong. A PlayStation CD holds about 600MB, and Final Fantasy VII had three of them. Flashcards hold 2GB and more, but for some reason Nintendo decides not to use cards that hold that much space. And these are the facts: The largest available regular DS cartridge is the 2 gigabit card, which as we all should know by now is 256 Megabytes.

Also, whenever this happens, nobody actually does the research and the calculations. Whenever there's talk of a DS-port of Final Fantasy VII, sooner or later people will start talking about whether or not they could fit the game on one of them DS cards, agree that they couldn't, and start talking about making larger cards or employing a system of card swapping.