[ale] Local electric/datacom supply retail stores?

[Christopher Fowler]

Can PCI handle the full speed of a 10Gb card?

On Sun, 2004-08-15 at 10:54, Mike Panetta wrote:
> 1Gb/s (not including overhead) is 125MB/s, so its close, but not faster
> (again not including overhead on the PCI Bus) as PCI is 132MB/s IIRC
> for 32Bit PCI at 33 MHz.  64Bit PCI at 66MHz would be 4x faster, or
> 528MB/s so it should be able to handle 4 cards.
> 
> Raw PCI bus speeds can be calculated by taking the number
> of bytes in the bus (4 for 32 or 8 for 64) and multiplying by the
> clock speed, either 33 or 66MHz.  This is raw bus speed, and
> I doubt even a burst transfer can sustain that for very long, and
> I know for a fact single transfers cannot (this ie because the address
> and data lines are multiplexed in PCI).
> 
> Mike
> 
> -----Original Message-----
> From: Christopher Fowler <cfowler at outpostsentinel.com>
> Sent: Aug 15, 2004 10:38 AM
> To: Atlanta Linux Enthusiasts <ale at ale.org>
> Subject: Re: [ale] Local electric/datacom supply retail stores?
> 
> Isn't the PCI bus slower than 1GB?  
> 
> On Sat, 2004-08-14 at 16:26, James P. Kinney III wrote:
> > Home Depot & MicroCenter. Lowes has stuff as well but they carry
> > non-standard plugs and sockets. 
> > 
> > Cat6 cable can be found at MicroCenter often, Home Depot never, and
> > Greybar always. Greybar is a large commercial electrical supply house.
> > They will not be the least expensive but thy will have it in stock.
> > 
> > Price on cable varies depending on application. Cat5e riser is $45/1k'.
> > Cat5e plenum is $120/1k'. Cat6 riser is around $80/1k' and $225/1k'
> > plenum. The cost of the plugs and sockets is about double that of cat5e.
> > 
> > The wiring scheme is the same for cat6 and cat5 but the tolerances are a
> > lot tighter on untwisted end lengths. When cat6 says 3/8" untwisted,
> > THEY MEAN IT! So 3/8" from the last end of the last full twist to the
> > punch down connector.
> > 
> > Cat5e will handle gigabit ethernet. Cat6 will do 10 gigabit. As the
> > cards that can do 10Gb are still in the $1k+ range, cat5e will do just
> > fine!
> > 
> > 
> > On Sat, 2004-08-14 at 15:20, Chris Woodfield wrote:
> > > Hello,
> > > 
> > > Are there any local electric/datacom supply retail establishments that 
> > > one would recommend (other than Radio Shack)? I'm looking for a place 
> > > that sells things like cable, tools, jacks and punchdown blocks, cable 
> > > testers, etc.
> > > 
> > > I'm asking because I'm about to do a Cat5e cable pull in my house, and 
> > 
> > > I'd like to be able to do it as professionally as possible.
> > > 
> > > Also, how much would one expect to pay for a 500 foot reel of Cat6? 
> > > Home Depot has a Cat5e reel for $40, I'm wondering if it's worth the 
> > > extra cost to go with Cat6, whatever that extra cost may be...
> > > 
> > > No mail-order please...I need this stuff by Monday at the latest, as 
> > > I'm coordinating the cable pull alongside an unexpected plumbing job. 
> > > Better make the most of having holes in the drywall...
> > > 
> > > TIA,
> > > 
> > > -Chris
> > > 
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> > > Ale at ale.org
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> 
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