
D-Link’s DIR-685 Wi-Fi router generated a lot of buzz at CES this past January. And when we took a gander at its spec sheet, we thought it a contender for Best of the Best in the router category; something that would finally displace the Linksys WRT600N, which is becoming hard to find. Alas, ’twas not to be.
The problem certainly isn’t with the DIR-685’s feature set: This router is absolutely loaded with goodies. The 3.2-inch color LCD can inform you of the router’s status and configuration; present digital photos from Flickr, Picasa, and Facebook; display RSS feeds, such as sports scores, weather reports, and stock quotes; and a lot more (this is one router your significant other won’t insist be hidden in a closet).
Next up, there’s a 2.5-inch internal SATA hard drive bay, which can turn the router into a NAS box (complemented by a built-in FTP server and BitTorrent software). There are two USB ports featuring D-Link’s SharePort technology, which allows you to plug in both an external hard drive and a printer and share these devices with any computer on the network. The router’s four-port gigabit switch automatically powers down any ports not in use to save a modest amount of energy.
The rest of the features are just as valuable, if not as unusual. You can set up a password-protected guest zone, for instance, with the option of limiting access to a set schedule. And there’s both a UPnP server and an iTunes server. Lastly, there’s a Quality of Service engine to help eliminate lag for VoIP and media-streaming applications.
But our enthusiasm over all those whiz-bang features is tempered by the DIR-685’s slug-slow wireless throughput and NAS performance. We’ve been using the aforementioned Linksys WRT600N for comparison for more than a year, but we always retest its performance within a few hours of benchmarking a new contender, just to make sure both products are tested under the same environmental conditions.
The DIR-685 lagged far behind the Linksys in our Kitchen test, where the client is 20 feet away from the router and separated by an insulated wall and a set of plywood cabinets: It delivered TCP/IP throughput of just 45.4Mb/s compared to the Linksys WRT600N’s 98.9Mb/s. The D-Link turned in a particularly poor performance in our Media Room test, where the client is located in a double-insulated room-within-a-room 35 feet from the router, managing TCP/IP throughput of just 4.54Mb/s.
The 2.5-inch drive bay limits your choice of hard drives to notebook models, and D-Link provided us with an 80GB Seagate Momentus 5400.5 hard drive for this evaluation. But we find the router’s lethargic NAS performance more troubling than this physical limitation: The DIR-685 took a full 8:53 (min:sec) to copy a single 3GB file from a PC. Compare that to the Qnap TS-209 Pro II—our Best of the Best NAS pick—which copied the same file in just 2:27.
We won’t complain about a high price tag if a product’s features and performance justify it, but the DIR-685’s $300 price tag—which doesn’t include a hard drive—just rubs us the wrong way.

LCD; internal hard-drive bay; built-in FTP and BitTorrent software.
Expensive; slow wireless and NAS throughput; hard-drive bay limited to 2.5-inch drives.
| D-Link DIR-685 | QNAP TS-109 Pro | |
|---|---|---|
| PC to NAS small (min:sec) | 2:54 | 0:36 |
| PC to NAS large | 8:53 | 2:27 |
| NAS to PC small (min:sec) | 1:06 | 0:39 |
| NAS to PC large (min: sec) | 5:52 | 2:44 |
Best scores are bolded. We used the contents of Maximum PC's November 2007 CD for the small-file testing, and a single 2.79GB file for the large-file testing. All scores are an average of three transfer trials.
| D-Link DIR-685 | Linksys WRT310N | |
|---|---|---|
| Kitchen, 20 feet (Mb/s) | 45.4 | 98.9 |
| Bedroom, 60 feet (Mb/s) | 16.4 | 63.6 |
| Media Room, 35 feet (Mb/s) | 4.54 | 14.8 |
| Enclosed Patio, 38 feet (Mb/s) | 29.5 | 70.0 |
| Outdoors A, 90 feet (Mb/s) | No connection | 2.52 |
| Outdoors B, 85 feet (Mb/s) | 0.25 | 0.60 |
Best scores are bolded. Additional test criteria available at http://www.maximumpc.com/article/how_we_test_wireless_routers?OTC-U4P481274081
Links:
[1] http://www.maximumpc.com/user/mrmick
[2] http://www.maximumpc.com/article/linksys_wrt600n_dual_band_wi_fi_router
[3] http://www.maximumpc.com/files/u90693/Router_Dlink_full.jpg
[4] http://www.maximumpc.com/files/verdict-images/Router_Dlink_verdict.jpg
[5] http://dlink.com
[6] http://www.maximumpc.com/article/how_we_test_wireless_routers?OTC-U4P481274081
[7] http://www.maximumpc.com/article/qnap_ts109_pro_0
[8] http://www.maximumpc.com/article/linksys_wrt350n
[9] http://www.maximumpc.com/article/reviews/belkin_n_wireless_router
[10] http://www.maximumpc.com/tags/dlink
[11] http://www.maximumpc.com/articles/reviews/hardware
[12] http://www.maximumpc.com/tags/hardware
[13] http://www.maximumpc.com/tags/nas
[14] http://www.maximumpc.com/tags/networking
[15] http://www.maximumpc.com/tags/reviews
[16] http://www.maximumpc.com/tags/router
[17] http://www.maximumpc.com/articles/magazine/2009
[18] http://www.maximumpc.com/articles/magazine/2009/october_2009
[19] http://www.maximumpc.com/articles/reviews
[20] http://www.maximumpc.com/articles/reviews/hardware/networking
[21] http://www.maximumpc.com/articles/magazine
[22] http://www.maximumpc.com/user/login?&commentfragment=comments_top_anchor