Hey, if you bought a GeForce 2 MX card, you may or may not know that it comes with 7ns RAM. That means it's rated to only go 143mhz. VisionTek shipped the cards overclocked to 166mhz. No big deal by itself, it just limited your overclocking potential. What you can do is call VisionTek and request an RMA and get your card replaced with one with 6ns RAM. I called last week (Friday), got my RMA information taken care of, then went to UPS that afternoon and sent my card. They overnighted a new card and it arrived today equipped with 6ns Samsung RAM!!! I haven't installed it yet, but I'm sure that 210 memory clock awaits with no problems... however, I think I'm just going to play it safe and stick to 183-190.
