HD 7770 Crossfire

The 7770 is so cheap that I've been considering buying another. Would the difference in crossfiring them be noticeable?
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More about 7770 crossfire
  1. TechPowerUp did a Crossfire benchmark with the 7750 & 7770. The 7850 & 7870 aren't listed but it appears that's where the performance would be, between the 7850 & 7870.

    The problem is extra heat (really not all that much), extra power draw (having the PSU to back it up) and getting the drivers to work without hiccups.

    Edit: The better option is get a 7850 2gb or 7870 and sell your 7770. Newegg has a 7850 2gb for $150 and the 7870 is $195 after rebates.
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