i get that error with 2x2gig

2x2gig Mushkin Redline XP PC2-8000
both in slots 1/2 and 3/4
memtest86 said it passed


i'll pull out 1 stick maybe though to see what this does

i get this error at any 3.9ghz setting of Bus x multi. voltages anywhere from 1.500 to 1.625
both F3h and F3