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How important is 16MB compared to 8MB cache.

post #1 of 3
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I am building a RAID0 array with the ultimate goal of getting 4 HDDs in the array. I may start out with 2 and get 2 more as the money comes in.

I am looking at these two hard drives:

WD 80GB 7200RPM 8MB SATA3.0 (Caviar SE WD800JD) $43.99 ($175.96 total)

WD 160GB 7200RPM 16MB SATA3.0 (Caviar RE WD1600YS) $62.99 ($251.96 total)

I do not use a lot of HDD space. Right now, I am barely using 50% of my 74GB Raptor. So, with that in mind, the 160GB (640GB total) compared to the 80GB (320GB total) would be of no advantage to me.

What I am looking at is performance difference between these drives. Also will there be any increase in reliability and decrease in risk of data loss from the RAID array? The specs show that the 16MB drives have a smaller seek and write time.

I am looking at a $76 difference for 320GB and 32MB cache... Is it worthwhile?

Also to consider is resale value. I think the 160GB 16MB drives will be worth a lot more if I resell.

Thanks for the consideration.
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post #2 of 3
The 16MB cache really helps especially if you're gonna be streaming huge amounts of data from those drives of yours.
The Naked Scooter
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post #3 of 3
I know the 16MB cache does improve my overall system. But i don't really know by how much (percentage wise).
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