Corsair TwinX problem.

ok i just went to buy a 2nd gig of RAM for my system today and wanted to get a gig of OCZ like i allready had but no shops had it in stock had to order it so i decided to get a gig of Corsair Twinx 2x 512mb. now i get home and throw both stick in along with my 2x 512mb OCZ (both of them are 400mhz) and the computer starts turning itself off and on non stop. i removed the Corsair and just used OCZ all was good, put both stick of Corsair in and no OCZ and it still done it, figured it was dead ram tried 1 stick works fine, tried the other stick by itself works fine, tried both sticks restarts non stop, changed slots still restarts, now if i leave it for 20 seconds of it restarting itself it will boot with both Corasair sticks in it, if i use 2 Corsair and 1 OCZ stick it will boot after about 30 seconds of restarting itself but with the 4th stick it just constantly restarts every second. i figured it may have been bad timings in settings so i went and loosened them all to 8-3-3-3 and still does it, gave it 2.8v just incase it was lacking power and no go, figured maybe too much strain on PSU so unplugged all HDD and CD-Rom and still no go. so i went and put the 2 sticks of Corsair into a friends PC and they work perfectly 1st go.

so my Questions is, is this a Corsair problem or an Abit AX8 mobo problem?

i posted it in memory since im sure itll get more looks than the abit section and it is still relevant.

Thanks in advance and sorry for the bad punctuation.