I just bought a 2 gb kit of TWIN2X2048-6400PRO at Frys electronics. This 5-5-5-12 kit is all they had. I noticed that Newegg has the TWIN2X2048-6400C4PRO kit that has 4-4-4-12 timings. I have actually been able to run my kit in 4-4-4-12, but I was wondering if the TWIN2X2048-6400C4PRO 4-4-4-12 kit would allow me any more performance gain? They cost a little more but is it worth it to take mine back to frys and order the C4 kit from newegg? Is there that much performance diference between the two kits? I am using an Abit AW9D-Max motherboard and Core Duo 6600 CPU.