Performance hit with two RAM sticks

[kunia]

I'll be ordering RAM from OWC for hex core 3.33 mac pro in the next few days. I can't spend $1k at once on 24GB, so I'm thinking of getting just 2x8GB for now and get the extra stick in about 2 months or so.
I know theres about 25% or so theoretical bandwidth loss with just two sticks, but what's the real, noticeable performance hit vs 3...if there is any?

thanks,
adrian

 

[Hellhammer]

The difference is pretty negligible in real world as most apps cannot take advantage of such high memory bandwidth