http://forum.lowyat.net/ Fri, 26 Jun 2026 03:49:46 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/1413943 Hi,<br /><br />I have a P55 gigabyte board that supports one PCI-E 2.0 @ x16 and another at x4, and a HD5770. My question, will a HD5770 choke on x4 PCI-E lane if I plan to add another HD5770 and crossfire it ? I&#39;ve seen reviews where they tested a HD5870 and the penalty is minimal, not sure about crossfire though.<br /><br />Another question, my HD5770 is a sapphire vapor-x version. Will any HD5770 work with it ?<br /><br />Appreciate much if I could get some answers, thanks. seraphim Hardware Thu, 06 May 2010 11:11:05 +0800