DIR-855 wireless speed

Was wondering what would be the wireless throughput of the DIR-855. Put together a simple test by transferring files off my network share onto my laptops.

Equipments used

  • D-Link DIR-855 on firmware 1.12WW
  • Fujitsu S6520 (wireless – Intel 5300)
  • HP EliteBook 2530p (wireless – Broadcom 4322AG)
  • D-Link DNS-323
  • D-Link DNS-343

The test target is the D-Link DIR-855 which is running on firmware 1.12WW. Both 2.4Ghz and 5Ghz networks are secured with WPA-Personal.

The Fujitsu S6520 laptop is using the Intel 5300 wireless network module and powered by Microsoft Windows Vista Business. The HP EliteBook is using the Broadcom 4322AG wireless network module and powered by Microsoft Windows XP.

DNS-323 and DNS-343 are used to ensure that the transfer capacity are maxed out.

Test procedure

The test procedure starts with the base lining of the laptops’ wired network transfer speed. This is to ensure that subsequent performance of the wireless tests are not affected by the specifications (ram, cpu, harddisk) of the laptop.

The next test is involves downloading files off the network attached storages using the 2.4Ghz wireless network in mixed mode (b/g/n). The test is then repeated for the 5Ghz wireless network in mixed mode (a/n)

During the tests, the laptops would be placed 2 meters from the DIR-855.

Test results on HP EliteBook 2530p

The test starts off with the base lining of the laptop’s wired transfer speed.

dir855_broadcom4322ag_lan

Download speed of 299.4 Mbps through wired (1Gbps)

The laptop is then configured to join the 2.4Ghz wireless network (b/g/n) secured with WPA-Personal. The result of the transfer:

dir855_broadcom4322ag_wireless2_4

Download speed of 101.6 Mbps through 2.4Ghz wireless in mixed mode (b/g/n)

Following that, the laptop is then configured to join the 5Ghz wireless network (a/n) secured with WPA-Personal. The result of the transfer:

dir855_broadcom4322ag_wireless5_2

Download speed of 110.0 Mbps through 5Ghz wireless (a/n)

Test results on the Fujitsu S6520

The test starts off with the base lining of the laptop’s wired transfer speed.

dir855_intel5300_lan

Download speed of 348.5 Mbps through wired (1Gbps)

The laptop is then configured to join the 2.4Ghz wireless network (b/g/n) secured with WPA-Personal. The result of the transfer:

dir855_intel5300_wireless2_4

Download speed of 102.2 Mbps through 2.5Ghz wireless in mixed mode (b/g/n)

Following that, the laptop is then configured to join the 5Ghz wireless network (a/n) secured with WPA-Personal. The result of the transfer:

dir855_intel5300_wireless5_2

Download speed of 109.4 Mbps through 5Ghz wireless N (a/n)

Personal findings

I feel that speed are quite hectic when using the 2.4Ghz band. It is probably due to the sheer number of 2.4Ghz wireless networks around my area which causes performance to be unstable and non-optimal.

On changing to the 5Ghz wireless band,  the network transfers are more stable in both test (Intel 5300 and Broadcom 4322AG). Reasons? Probably none of my neighbours are on the 5Ghz band, hence less error packets due to external signals.

Do take note that wireless conditions varies from house to house, place to place. You may achieve better or worst result than I have. Maybe I should try sourcing for the D-Link DWA-160 wireless USB client to see if I am able to achieve better results.

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