6600 agp core clock?

[imported_CAMPER]

First off hello all... been reading forums for awhile and kind of need some help. I'm getting differnt core clock readings depending on what i check it with ,,,

3d mark 05 states 1.0 ghz memory and 299.3 core clock?

3d mark 03 states 1.0 mem and 500 core clock?

Riva tuner states 299.3 core clock ?

benchmark good 3dmark05 is 3068 auqamark is 42,000, runnig driver 67.03, but same results with 66.81 its the xfx 6600 gt agp. cpu is 2400+.

I assume it"s nothing big considering im benching okay just wanted to know why it is reading as such.

p.s. by no means am I a pro thats why I'm asking ya'll.

Thanx