Can I to make a CrossfireX with AMD Radeon HD 6770 and HD 5770, or make sli of gts 450 and GTX 550 TI? Assuming I have appropriate system...

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  1. 6770 and 5770, yes they are the same card(re-badge), but not the 540 + 550
  2. You can CrossFire the HD 6770 with the HD 5770 based on AMD's CrossFire Chart:
    They're both essentially the same card, although you have to set the HD 6770 as the first and primary card.

    I believe you cannot have a GTX 550 Ti and GTS 450 to work in SLI together.
  3. At what level of performance will be CF of 6770 and HD5770?
  4. Probably around HD 6870 performance. Nothing really amazing. I personally wouldn't spend more than $100 on a pair of crossfire HD 5770/HD 6770.
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