X-Bit Labs did a little research and discovered you can transform a Springdale i865P (533MHz FSB) based motherboard into a Springdale i865PE (800MHz FSB) based motherboard.

How? By flashing the BIOS of your i865P motherboard with the same BIOS, from the same manufacturer, of an i865PE motherboard.

Apparently, a number of mainboard manufacturers make their i865P and i865PE powered mainboards on the same PCBs. It means that the design of the products is identical and mainboards use nearly the same BIOS. As we know, the only difference between i865P and i865PE is the 800MHz Quad Pumped Bus support by the latter, however, some mainboard makers (for example, MSI) already offer their i865P-based mainboards with support of 800MHz QPB through overclocking. It means that the i865P still can operate stably in some cases when the fast PSB is used. What we managed to reveal is that if you flash your i865P mainboard with a BIOS from exactly the same mainboard, but on i865PE, you will get an "i865PE-based mainboard" with 800MHz Quap Pumped Bus support as well as dual-channel PC3200 DDR SDRAM memory. It will operate fast and stably while costing a bit less.