Hi, the links are not working on my phone. Can you fix them (or is it broken just for me)? I am working with both GPUs and rendering. So I am interested especially in the article on unbiased gpu rendering. Thanks.

Edit: To add something to the discussion: GPUs might be usefull for a preview, but the problem of photorealistic rendering is not really suitable for an efficient GPU-Implementation.
And sorry for writing in English. While my knowledge of Spanish was enough to understand your post, I don't feel that it is enough for replying in Spanish.