The difference is ridiculously small. I'd be more inclined to attribute any performance increases to the operating frequency increase, not the stepped-up FSB.
im thikin of upgrading from my 3.4ee to a 3.46ee. i would have to change my mobo. but its so worth it.AHAHAHAHHAHAH jk. yah the difference is like 1 to 2fps second in most games. such a small difference.
The biggest application benchmark improvement was SPECviewperf 8, where the 3.46 was faster by 2.7% on average. In all the other application benches it was 0-1% faster on average. Some individual apps were up to 4% faster.
The improvements in memory performance in synthetic memory benches were 9% at most.
All in all, pretty lame to have to spend so much more money to get a minor improvement over what people are getting with old Socket 478 mobos and P4 3.4EEs using DDR400.