Tag Archives: usb

AT&T’s Option Quicksilver USB vs Sprint’s Sierra598U USB (Cellular Modems)

I recently upgraded my laptop to a Sony Vaio VGN-Z610Y (which I LOVE, byz_gallery_two_comps    the way, but that’s another review).

In order to leverage the Vaio’s portability, I decided to get a cellular modem to enable mobile Internet access. But which device and carrier?

I have a generous corporate discount for AT&T via my employer, so AT&T was an obvious option. I had read a lot about Sprint’s data access, and found Gizmodo’s nationwide wireless provider comparison (using cellular modems) especially interesting, so Sprint appeared to be another good option.

Off to the wireless stores I went…

At AT&T, I picked up an Option USBConnect Quicksilver. quicksilver I was actually hoping to get an express card form factor, but AT&T is apparently phasing out them out. That left a PC card format (which my laptop doesn’t support) or USB. I went with the Quicksilver based on reviews I’d read online.

598u

At Sprint, I picked up a Sierra Wireless USB 598U based on online reviews. Also, Gizmodo’s nationwide comparison test was quite compelling since it showed Sprint as having the fastest cellular network, on average, nationwide. I confess, I’ve never been fond of Sprint as a wireless carrier (don’t prefer CDMA due to being “locked into” a specific device for the life of a 2-year contract and Sprint’s customer service and billing accuracy can be underwhelming). I was disappeared to learn post-purchase that although my employer has a corporate discount negotiated, Sprint does not apply discounts to their $59.99  data plan for wireless modems.

Well, what did I find once I got home?

During my at home testing, I felt underwhelmed by the AT&T Quicksilver – speeds were consistently slower than the Sprint 598U. I was disappointed to the point of packing the Quicksilver up for imminent return. Here are the metrics from my at home testing:

AT&T Quicksilver (at home, evening) –
Average download speed:  .97 Mb/s
Average upload speed:  .143 Mb/s

Sprint 598U (at home, evening):
Average download speed:  1.137 Mb/s
Average upload speed:  .243 Mb/s

However, I’m not really planning to use the cellular modem at home. Time to hit my usual haunts and check out performance.

How did these cellular modems/networks perform out and about?

AT&T Quicksilver (out & about, business hours) –
Average download speed:  1.82 Mb/s
Average upload speed:  1.213 Mb/s

PEAK download speed:  2.74 Mb/s
PEAK upload speed:  1.25 Mb/s

Sprint 598U (out & about, business hours)  –
Average download speed:  .829 Mb/s
Average upload speed:  .499 Mb/s

PEAK download speed:  1.77 Mb/s
PEAK upload speed:  .61 Mb/s

Clearly, the AT&T Quicksilver is faster in places I like to visit locally. I don’t travel a lot, so I’m satisfied with basing my purchase on network speeds where I live & work in Connecticut. If I traveled more, my choice might be different.

I’m also quite happy with AT&T as a wireless service provider, and have stayed with them longer than any other carrier (and I’ve tried them all). I logged into my AT&T account today and was delighted to find my corporate discount already applied to the Quicksilver’s monthly data plan. My experience with AT&T has generally been “no hassle”, and buying and getting up to speed with this device has been quick and easy.

Decision: AT&T Quicksilver

How I performed this analysis (for data geeks 🙂
I ran Speedtest.net 3 times per modem in each location, and then averaged the results. When I had reason to think another process could be concurrently accessing the Internet, I re-ran the test.

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