Originally Posted By: hybrid8
I'm not certain if I have to set the voltage to 2.0v to get the 533. They're separate settings in the BIOS, I haven't tried setting only the clock.

To get the rated speed you have to run it at the specified settings including voltage.

Originally Posted By: hybrid8
On the Crucial site, out of 23 reviews the average rating is 2/5. Lots of people mentioning errors and BSOD. Great. MOst people claiming they can run relatively error free at 400MHz.

Online ratings/reviews are skewed towards the bad side anyway. The posters aren't running it at the specified voltage but still at the higher speed/timings.

Originally Posted By: hybrid8
This is starting to seem like under-spec memory being falsely advertised as higher-end parts. Not cool to advertise DDR2-800 as DDR2-1066.

No. You bought RAM which tested by the manufacturer to run reliably at modified settings/voltages. If you don't run the RAM at the specified settings then you won't get the rated speeds.

If you bought a regular stick of DDR2-800 would you complain that it won't run properly at 1.2V and it crashes lots? You bought a stick of DDR2-1066 that required 2.0V for DDR2-1066 operation. Pay more and you get a stick of DDR2-106 that runs at 1.8V for DDR2-1066 operation.