Has it been stated anywhere if Poser 8 is 64-bit? I've looked at the press releases and it is not clear to me. Like many others here, I bought PPro for 64-bit rendering. Scenes that would crash P7 render just fine in PPro's 64 bit engine. At this point, I think it would be silly for SM not to develop P8 for 64-bit; when some budget computers are now coming shipped with 3GB of ram, the mainstream computers will probably be 4+ GB requiring a 64-bit OS very soon.

On a sidenote, I just rebuilt one of my computers with a Phenom II X4 955 (3.4Ghz) and 8GB of ram on Windows 7 64-bit. In a little "bakeoff" with my older rendering box (Core 2 Duo 2.8 Ghz, 4GB Ram, Vista 64), I expected the Phenom II to slightly beat the old C2D box with the extra cores and the clockspeed advantage, but  it usually finished rendering the test scenes before the old machine even finished loading all the assets (amounting to 2-3X faster)! I would say the 8GB of memory was key; it  is needed for quad core machines to really use the extra cores over a dual-core setup (Windows 7 seems to help a lot too...way less bloated than Vista). All the more reason to make P8 64-bit. For it not to be would be a huge step backwards.