Memtest 1.6 and DDR2 Wierdness

When set at stock speeds such as DDR2 800 or DDR2 533 memtest correctly reports the ram speed. But when I have it set to something in between like DDR2 750 for instance, it is incorrectly reported as DDR550 (250x2). I know it isn't running at that because CPU-Z identifies the ram as running at 375mhz x 2 (DDR750).

Is this a bios problem, a memtest problem, or a ram problem? MB is P5WD2 with a PD 830.

Thanks!
Shane

It appears as though memtest just isn't correctly reporting non standard speeds, although it seems to be testing the ram and reporting errors properly.

Hopefully someone can confirm this.

Shane