I'm wondering if Althon Micro started using fans on the LE after it got to be successful, or maybe ATi just sold them their remaining retail 32mb DDRs to be re-sold as LEs? Does your card have the ATi logo on it (with the words ATi in the middle, and not whited out)?
What you might want to try is to go into your registry settings (Run> regedit> HK_LOCAL_MACHINE> Software> ATI Technologies> Driver> 0000> atidxhal) and look for these three entries:
Retail Radeons have this:
"DisableHierarchicalZ"="0"
"DisableHyperZ"="0"
"FastZClearEnabled"="1"
Radeon LEs should have this:
"DisableHierarchicalZ"="1"
"DisableHyperZ"="1"
"FastZClearEnabled"="0"
Also, run a default MadOnion 3DMark2001 bench, publish it, and post a link to it. I should be able to tell the approximate clock speed, and the type of core (Radeon 7200 or Radeon 7000) just from the bench