Which graphic cards are best supported by Ubuntu

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http://askubuntu.com – I am looking at new laptops and before buying wanted to know which of the graphics cards from below are best supported by Ubuntu. NVIDIA GeForce GT 630M (ASUS K55VM) NVIDIA GeForce GT 650M (Samsun NP550P5C) AMD Radeon HD 7730M (Dell Inspiron 15R Special Edition) AMD Radeon HD 7570M (Dell Inspiron 14z) Also does Ubuntu fully support Quad core processors? Does Ubuntu face any heating issues with some Intel chipsets or any specific laptops? (I remember when I bought my current PC and installed ubuntu on it, there were some major heating issues that were resolved only in the next release.) (HowTos)