USB-2 = about 400 Mb/s
Firewire = less than USB
SATA - around 3 Gb/s
I used a USB-2 external case for my 400 Gig Seagate SATA drive. Disappointed. I removed the case and built my own connector using a SATA cable. Transfer speed was increased. It's not pretty nor is it portable, but I verified the speed increase using the SATA cable.
I am shopping for a 500gb external hard drive, to be used whenever my laptop and I are at home. I will keep my entire music/video/photo collection here, as well as other documents. I have also considered installing some of my video games on it, if it's comparable to speed with the built in hard drive. What I'm confused about is what aspect of the hard drive is more important when it comes to trying to match the speed of your internal hard drive.
Which matters more? Cache, or the connection to the laptop?
Should I worry about getting a 16mb cache hard drive, or an eSATA or USB or firewire 400 connection? I know that Firewire 400 somehow doesn't use any cpu resources, but does eSATA?
May also put linux into it..
My laptop has firewire built in, and I might be willing to buy a card for eSATA, since they're like $20 on newegg.
My total price range is somewhere between $100 and $145 ish, trying to stay away from $150, but will consider other options if they're worth the cause. I'm not too worried about finding a specific hard drive, just finding out if the connection is that important and how much cache I really need. Thanks a ton, Brian