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Old 11-16-2011, 01:10 PM
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Default HomePlug AV500 Adapter Roundup

Very strange, why the NETGEAR XAVB5001 tested so poorly in the AV 500 roundup, especially since there was no firmware update since the original review.

Did you receive a different set of adapters? or did some other variable change in your testing, because in the orignal NETGEAR XAVB5001 review, it blew away the competition, but in the roundup review it got crushed.
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Old 11-16-2011, 02:02 PM
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Same adapters. Different computer, but I don't think that would make a difference. I even did the Location A tests with separated outlets to minimize front-end overload.
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Old 11-16-2011, 02:20 PM
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The Trendnets seem to have improved a lot too. Is there a new revision of the product or just a firmware update? Might have to pick up a pair instead of the Netgears.
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Old 11-16-2011, 02:22 PM
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Quote:
Originally Posted by kk22 View Post
The Trendnets seem to have improved a lot too. Is there a new revision of the product or just a firmware update? Might have to pick up a pair instead of the Netgears.
Just the firmware update I noted. I used the same adapters.
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Old 11-17-2011, 01:06 AM
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I wonder how many chipset vendors there are for HomePlug AV, and what product makers use what chip. I suppose one can dig this out of the FCC filings.
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Old 11-17-2011, 10:59 AM
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I believe for Powerline Av there was only two mass market chipset vendors one was Intellon, which was acquired by Atheros, which was later acquired by Qualcomm. The other was Gigle Networks which was acquired by Broadcom.

Broadcom just announced last month BCM60321 powerline av 1.1 200mbps chipset based on 40nm manufacturing process. But I do not think this product will compete well against the latest powerline av 500 products in this roundup. But this chipset will bring lower power consumption on load and idle compared to qualcomm, and it will enable networking gear to be much smaller.

The recently announced Gigafast PN928-EB is based on this qualcomm chipset, so hopefully Tim will be able to test one of these new units and how it compared in performance, and in performance per watt.

Last edited by bigpapae35; 11-17-2011 at 11:04 AM.
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Old 11-17-2011, 04:14 PM
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We'll see when these chipsets make their way into real products. Honestly, though, it's diminishing returns. 500 Mbps loses throughput pretty quickly once you get some distance between adapters. Gigabit will probably be the same.
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Old 11-18-2011, 10:32 AM
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There's also the stuff about using the three conductors to sent the powerline signal (main+neutral+ground) instead of two. It could, depending of the implementation, provide more bandwidth ou a kind of "error correction"...
Some new chipset would be needed though.
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Old 11-19-2011, 06:12 PM
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Question Phase Jumping?

Most houses in the US have 220V in that is split in the breaker box into two 110V phases. Did you try any tests across phases? Generally I have seen huge performance drops for PLN gear when they have to jump across the phases.
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Old 11-19-2011, 06:56 PM
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See http://www.smallnetbuilder.com/lanwa...rline-products
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