On Thu, Jan 14, 2010 at 10:08:55AM +0200, Pasi Kärkkäinen wrote: > On Wed, Jan 13, 2010 at 02:31:09PM -0800, nate wrote: > > > > 10GbE is really cheap these days(cheaper than 1GbE in some cases > > on a per Gb basis) if you need faster performance, and simple > > to configure, I wrote a blog on this a couple of months ago: > > > > http://www.techopsguys.com/2009/11/17/affordable-10gbe-has-arrived/ > > > > This reminded me of something. I remember reading some website > (possibly Cisco's) earlier, and they mentioned 10 GBASE-T had > much higher latency than other 10 Gbit options. > > Have you paid attention to this? How big is the difference nowadays? > Or I wonder if it was just on some specific product.. > > http://en.wikipedia.org/wiki/10_Gigabit_Ethernet says: > > "10GBASE-T has higher latency and consumes more power than other 10 > gigabit Ethernet physical layers. In 2008 10GBASE-T silicon is now > available from several manufacturers with claimed power dissipation > of 6W and a latency approaching 1 microsecond" > > 1 microsecond doesn't sound bad.. :) > http://www.bladenetwork.net/userfiles/file/PDFs/WP_10GbE_Cabling_Options_091016.pdf That PDF claims this: 10GBase-T: - latency 2.6 us - power per port: 4-6W/port - price per port: $400 - max distance: 100m 10 Gbit SFP+: - latency 0.3 us - power per port: 1.5W - price per port: $40 - max distance: 8.5m -- Pasi