for some reason my new biostar tforce 6100 did not like my xp-90, so are there any decent heatsinks that utilize the stock heatsink bracket or if you are certain, something that should work with my new mobo. also i picked up a sapphire x800xt gto2 with 16 pipes already unlocked and would like to oc it a decent amount. so should i go with valman or artic cooling on this one or are there any other recommendations?