Just out of curiosity, what where the render settings? Here are the FireFly Render options. I turned off Use texture filtering for a fast render. Texture filtering reduces texture antialiasing but because summed area tables are used with texture filtering, memory use can increase up to four times. I recommend not to use texture filtering on scenes that have high res textures.. I rarely use that option any more. I think Larry turned it off on default settings now. This test scene was rendered on a P4 2.0 Ghz processer with 512M Ram, VM set to 768M