Mushkin PC300 just 150 FSB??

I just purchased 256 Mb stick From Outpost.com . I was rather excided when the thing arrived, i was sure it will beat my PC2700 XMS (180 turbo).
I was soo wrong, this thing wont boot at 183 fsb, hell it wont boot even at 153 fsb!! When a run it true memtest it shows errors even at 140 FSB. Is there any other choice than RMA it??
I did wait a few days, burning it with sandra but that did absolutely nothing.

That does sound a bit screwed....

I've got PC2100 that will boot at 170MHz.....

If it shows errors, RMA it, telling them why......

RMA it. My pc3000 mushkin will do 220 MHz at normal timings and default voltage.