Which Is Faster - 16MB Cache/5400RPM or 8MB Cache/7200RPM

[jamiphar]

I've been looking around for another 80-100GB laptop drive and was wondering which ones would be the fastest.
I would think that 7200RPM drive would generally be faster, but if a 5400RPM drive has twice the cache, would there be much of a difference?

[pianowizard]

If you look at this HDD chart on Tom's Hardware Guide, you'll see that both of the 16MB HDDs don't perform that fast.

[jamiphar]

Interesting. I suppose the cache wouldn't help too much unless you're just writing files smaller than 16MB at a time. Maybe it would consume less power?