ATI 5670 question

[pcjoseph1974]

Hi all, I was considering buying a second 8800gt to SLI in my i7 920 and came across a few cards that got me thinking. One of them is a ATI 5670. I compared my 8800gt 512 to it and here is a comparison

http://www.gpureview.com/show_cards.php?card1=544&card2=623#

I then started to read benchmarks of it versus a 9800gt 512 (basically same as a 8800gt 512) and it came in significantly under the 9800gt 512. Given the faster memory ( like double) and core clock, but lower texture units and raster operators, why is this card so much slower? Is It the GPU?

[patio]

Not sure where your reading those benchmarks from but their off by quite a bit...