Hard Drive 32MB or 64MB Cache?

hey guys , gals,

i'm in need of new external hard drive , need drive really, have case already. i've been looking @ wd black drives , there 1tb around $110 32mb cache , 1tb (newer) black 1tb $140 64mb cache.

i'm not doing crazy editing still, best bang. $30 worth jump 64mb cache? i'm plugged in via firewire 400, running fcpx on i7 imac 16gb ram.

 

1tb hard drive

go ahead , future proof it, in long run performance difference better not on everything.

here comparison chart along decision, though drives not in direct comparison can make decision

http://www.tomshardware.com/charts/hdd-charts-2012/desktop-performance,marque_fbrandx46,2930.html

 

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