Aye, I understand what you and Xenix are saying, Erlik! And if you were working with a 50 MB scene alone, at render-time it wouldn't matter if you had 256 or 1024 MB of RAM. You're right... But you're also wrong. The swap file ALWAYS kicks in, because my PC is never just rendering. There is always, always, 30 or more other processes going on. And Bryce is rarely, if ever, "On Top". So in the case of normal-sized scenes, which to me are over 200MB, there is even MORE swapping going on. If I had more physical RAM, this would be minimized. And in the case of my two scens that are well over 500MB, which I can open and render but not ADD anything to without instabilities on my next save, having more physical RAM is the only way to overcome this barrier. Like I said, I've dealt with this before with multiple, dozens of scenes really. When I moved up to 512 DDR on this PC, it opened up all kinds of worlds. So, we're all correct on this issue, in certain ways. But in the other ways, I have to say I agree with Rayraz on the issue of Physical RAM, and how it really does affect render speed in large scenes. If your scene is paging (swap file, virtual memory) during rendering, it's hit a bottleneck... And since all of my scenes page at render-time, it's a bottleneck for me!