The SATA read tests were conducted with a 74GB Western Digital Raptor using HD Tach 3.0.1.0's 8MB zone test. The USB 2.0 tests were done using an ATA133 160GB Maxtor DiamondMax 10 hard drive (model number: 6L160PO) using the same 8MB zone test enclosed in an Icy Box USB 2.0 hard drive caddy. We recorded the average read speeds in all cases.
USB 2.0 Performance
HDTach 3.0.1.0, 8MB Zone Test, Average Read
Asus P5K3 Premium
Asus P5K3 Deluxe
33.2
33.3
0
5
10
15
20
25
30
35
MB/s
Firewire Performance
HDTach 3.0.1.0, 8MB Zone Test, Average Read
Asus P5K3 Premium
Asus P5K3 Deluxe
35.3
36.1
0
10
20
30
40
MB/s
Hard Drive Read Speed
HDTach 3.0.1.0, 8MB Zone Test, Average Read
Asus P5K3 Premium
Asus P5K3 Deluxe
64.3
63.8
0
10
20
30
40
50
60
70
MB/s
eSATA Performance
HDTach 3.0.1.0, 8MB Zone Test, Average Read
Asus P5K3 Premium
Asus P5K3 Deluxe
50.9
50.9
0
10
20
30
40
50
MB/s
The performance is unsurprisingly as good as the Deluxe. A fractional deficit in Firewire performance and an equally small increase in hard drive performance averages gives no noticeable difference to the end user, and the overall performance on all accounts is very good.