AMD Phenom II X4 955BE 3.2 AM3
Gigabyte GA-770TA-UD3 770 R
G.Skill 4gb (2x2gb) DDR3 1600
Raidmax Smilodon ATX w/500w
XFX Radeon HD 5770 1gb
(1) OCZ Solid 2 Solid State Drive 60gb
(2) 1.0T SATA 3.5" drives
Asus Wireless nic
Host OS: Win7
Test HDD: 750gb Samsung 7200rpm 3.5” SATAII
Applications used to benchmark: HD Tune 2.55 and CrystalDiskMark 3.0.0.2010. The USB 2.0 interface I used to test with was an Accomodata External Drive Enclosure.
The transfer rate results are pretty clear with the USB 2.0 graph. It is a pretty steady line at around 29.0MB/sec. This tells me that the bandwidth of the interface is maxing out, not the drive itself.
Next we will look at the USB 3.0 adapter results.
The results from the HD Tune test are quite interesting once connected to the USB3.0 interface. First, I note the up/down at a pretty regular spacing. I would assume this is the drive cache refreshing. Second, we have a pretty clear downward trend as the test continues along the plotters. I note the maximum transfer rate is a little over triple that of the USB2.0 interface and the average around two and a half times. All of those things together tell me that I am maxing the drive itself out as opposed to the interface.
Once again CrystalDiskMark returns similar results. The speed is far higher in both the sequential and 512k tests.
