please review my sound settings

Im using sonar platinum...i have 2 delta 1010(pci) interfaces and a phonic firefly 808 (firewire)...im asking because i want to get the best quality i can get with my system..which is somewhat old
Athlon 64 x2 dual core 3.01ghz
4 gig corsair ram
32 bit OS -x64 based processor
Sonar settings
:driver settings
Audio driver bit depth 24
Sample rate 41000
Buffer playback queue 4
:playback and recording
Driver mode MME 32bit
Dithering triangular
Checked are
Use multiprocessor engine
Use mmcss
Always stream audio through fx
:sync n caching
File system
Playback i/o buffer size 256
Record i/o buffer size 256
Enable read and write cachind NOT checked
:audio data
Record bit depth 16
Render bit depth 32
Import bit depth original
:project
Record mode...comping checked

M-audio delta control panel
Sample rate 41000
Asio/wdm buffer size 255
Sync source(locked)...internal is checked
Spdif(consumer)

For best performance you should be using ASIO driver mode, not MME. Unfortunately ASIO only lets you use one driver at a time, that means either your Phonic or your Delta. Some manufacturers let you use two of the same cards with a single driver, I don't know if that's the case with the Delta.

You should change recording bit depth to 24 bit but most people feel 44.1KHz is fine.

4 x to be exact, at least you could have 4 delta 1010's linked up (not sure if it was available with the 1010lt though), i believe it was the same with the 44's and 66's. although this changed if you were using the latest driver sometime during Windows 7 era where it no longer worked as expected with the new driver