thacondor :
lol yea i could have sworn this started off between a 9800gt and something else (like a gx2 or ??), not a 260; anyways... I'd take the 260 all the way... its cheaper then both 9800 gts-- 140$/ea vs. 200$ gtx260 and you can add 1 more later unlike if you get the 2 9800gts...
edit: just looked up my 3dmark 06 score and compared it to the gtx series cards and at 1280x1024 the 9800gts keep up no problem; but anything above that and the gtx takes over... so really depends on what your resolution is...
Well I was just using that as an example because I didnt want to look up benchmarks for comparisons, and we already know the 9800gx2 = gtx 280 = 4890 in most cases, give or take a few frames, though the 9800gx2 wasnt really a good card anyways.
Bottom line in my opinion is that the 9800gt 1gb in SLi wins in performance, but $200 price really isnt justified for two gen old sli cards. If you must get one of those 2, i'd personally get the 9800gt, but there are better options out there for that price like the 4890.