The AXP 2.5/3.5

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Testing

Installation

Installation is incredibly easy and takes literally seconds. All that needs to be done is to connect in the hard drive and then connect the unit to your pc using either the eSATA or USB cable; we decided to test the unit by comparing all three connectors – straight SATA, eSATA and USB.

Methodology

For testing HDD enclosures, you aren’t really testing the enclosure itself but how much it hinders HDD speed. Because the Uranus offers two choices of connectors I tested both the straight SATA and eSATA connectors using HDTach. The eSATA results were taken using the included SATA to eSATA converter and plugged directly into the motherboard SATA port.

The PC used in testing was as follows:

Processor

Intel C2D E5550 Dual Core 2.33GHz

Motherboard

Gigabyte S-Series GA-73PVM-S2H

Graphics Card

XFX 8600GT

Memory

Corsair XMS2 PC6400 (2x 1GB)

Hard Drive

Western Digital SE16 80GB

OS

Windows XP Pro 32bit

The “quick test” was run three times and the scores averaged to gain a fair result for each reading.

Results

Average Speed Read (MB/s)

Burst Rate (MB/s)

CPU Usage (%)

Random Access Time (ms)

eSATA

63.4

122

6.5

13.1

USB

35.7

32.1

12.3

13.4

Straight SATA

60.1

143

3.6

13.3

It is evident that overall the USB results are much poorer than both the eSATA and straight SATA readings. This is quite disappointing especially the CPU usage up at 12.3%, roughly four times the straight SATA amount.

Also, another area of disappointment for the USB was the burst rate (MB/s). In this particular department the eSATA and straight SATA results were 122 and 143MB/s respectively. However, the USB achieved a mere 32.1 burst rate which is a long way behind the other connectors.

On the bright side, it is encouraging to see the eSATA challenging the straight SATA values and overall it is not far behind. Therefore for users running low on SATA connectors, eSATA is a great alternative.

Cost

The AXP 2.5/3.5 HDD Dock to eSATA/USB 2.0 costs roughly £28 although the price is from Europe at 35 Euros so the conversion may not be the equal. Therefore £30 is probably a better estimate as we tend to pay a little more here in blighty.

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Last modified: February 15, 2011

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