because 8x DP sounds so nice they didnt want to scare off with 2x SP being listed anywhere near it.
Yep, that's the side effect of advertising GT200 as 3 flops per clock. In real workloads Fermi is probably a good deal faster than GT200 even in SP but due to their aggressive marketing of GT200 capabilities Fermi looks like a mediocre upgrade on paper.
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