My Xbox is running a 160 GB IDE from 2007 or something.
I needed to ask this about 3 years ago, I used Crunchbite's (on Homebrew Discord) 8 GB Etcher image to prepare the new drive then iirc I used the XBox Formatter to make the partitions (which automatically set the cluster size to 16 KB) then I copied all the C:\ drive content from the original 8 GB HDD via FatXPlorer and also transferred some games and homebrew.
And at that time when I was using the stock HDD my Xbox was giving me constant 10-11 mb/s on my diy crossover cable connection to my laptop.
After I put that new HDD in I didn't notice that right away but the max transfer speeds I get are around 3-7 mb/s on the same crossover ethernet cable.
Is it related to the cluster size or is the HDD just bad or on it last legs?