The average user doesn’t have the knowledge base to overclock. Also, the average user is probably lazy and would rather pay $10 extra then go to the effort of discovering the limitations of the card themselves.
Sweet, im gonna go with this one:
NEW! XFX GTX 460 PCI-E 1GB 256-Bit DDR5, 675/3600MHz, 2x Dual-link DVI, HDMI, FAN.
Thanks
Blake