if you doubt about Asrock, you really got a very limited choices. You won't be able to "play" with conroe but you can "play" with Pentium D. Let's say Asus P5P800SE plus Pentium D 960 3.6 GHz.
My Asus P5P800SE plus Pentium D 930 3 GHz plus XFX 7800GS Extreme Edition can scored 14.625 in 3DMark03. FEAR in 1280x1024, SoftShadows enabled, 2x AA, 8x AF, EAX enabled can play without hiccups same as in Half Life 2.
Well, it's your choice mate. Good luck.