Hey I was wondering...does a PSU need to say that its SLI or Crossfire ready in order for you to run sli or cf, or is that just a gimmicky type thing and most PSU's can run SLI/cf? I ask because I'm looking at this Antec CP-1000 1000W Continuous ATX12V v2.3 / EPS12V v2.91 SLI Ready 80 PLUS Certified Modular Active PFC Power Supply but am not sure if it would work with crossfire.