Here we have a picture of the same old drive Apple puts in all there MBPs. 160 gig 5400 rpm.
This is the new drive I had to run out and get while my laptop was cracked open, because the plugs were different on the 2-320 gig drives I bought. I ended up with the same setup I read this other dude had in his laptop. My dreams were shattered.
Notice how the plugs are different. The one on the adapter is diffent then the ones Apple uses today in there MBPs.
Under side of hard drive. God that would of been cool.
   

This speed test is from the Drive that came with the computer.

160 gig 5400 rpm

This speed test is from the Drive I put in the computer. The bay swap

160 gig 5400 rpm

This drive for some reason is quicker then the one that came with the computer.

This speed test is from a external drive pugged in through firewire 800 This drive runs on the power coming from the computer, so there are no external power supplies needed.

200 gig 7200

I have a couple of backup drives of 1TB and they are striped RAID-0 they write at about 80MB/s

This speed test is from the combined drives. Striped RAID-0 320GB

 

My read and write speeds have pretty much triple.
My new drive again except this time it doing 20-100 MB files
The above speed tests are coming from a eSATA 34mm pci card. It's connected to one of the hard drives that didn't make it into my computer. The eSATA card is cabled to a 5400 rpm 320GB drive. This drive does need a 5vdc power supply to run. It has some impressive speeds. I have actually seen over a 115MB/s using eSATA. They're just so cumbersome.

For some other internal shots click here