Hi everyone. I purchased a 27" imac. I decided to try and play some games on them, so I installed windows 7. Now, here's what boggled me. I bought the model that has an ATI Radeon 4670 with 256 MB Vram. I only noted that the ATI radeon 4670 available elsewhere only is available in 512 MB and 1 GB models. System profiler also said that my Vram was 256 MB, while I was running snow leopard. I installed windows 7, and checked my computer to see if it could play some games. I noticed on this website http://cyri.systemrequirementslab.com/CYRI/ that it said my computer has 1.5 GB Vram, and a strange video card that is not a 4670. It's called a ATI display adapter (0x9488). Then I ran my system check, and noticed another strange thing. My computer said that I have 1523 MB of total graphics memory, but this time, it gave the correct video card, an ATI Radeon 4670. If it helps anyone, it says that I have 256 MB dedicated graphics memory, 0 MB dedicated system memory, and 1267 MB shared system memory. That number isn't in any way related to RAM, is it? Now I wasn't looking for quality gaming on my imac, but with 1.5 GB of Vram, it'd be a great possibility. However, unfortunately so, I imagine that this number is wrong from some reason. Could anyone shed light on this? Thanks.