I have a question about zbrush. I want to know if real time rendering use the gpu vram to display the image? When I am editing an image I get blank areas where I edit, after I edit the image it will update to show what I changed. Really what i’m asking is what could be the cause of this bottleneck? I plan to get a new laptop so will I be ok with a 2nd gen cpu with intel hd 3000 graphics or will I get better performance with a nvidia or ati gpu? Right now I have a gpu with 128MB of ram and shared memory, it’s kind of an old card. I was thinking a gaming laptop would do, but some quad core laptops are the same price with intel graphics. Please let me know what you have used and your experience with the PC. Thanks.