I own intel 3ghz pro,intel 865gbf mb,ati radeon 7000ve agp card.I donot get satisfactory performance of hl2,far cry,etc.I need a best agp card upto 4.5k which can play doom3,ut2004,far cry smoothly.Will upgrading my mb to gigabyte 8I915G Duo make a better option?My ram is 256mb.