[TOOLS] PCI-e versus PCI-e Graphic slots

Subject: [TOOLS] PCI-e versus PCI-e Graphic slots
From: "McLauchlan, Kevin" <Kevin -dot- McLauchlan -at- safenet-inc -dot- com>
To: <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Tue, 15 Apr 2008 15:35:39 -0400

Hey, group,

I've Googled and I'm still not sure...

Our company makes a board that has a PCI-e x4 connection.

There are occasions when a person might use two of those cards in one

I'll need to try that configuration and document any peculiarities.

My old test box doesn't even _have_ PCI-e. I'm looking to order a new

Most PCs that I see (and we're limited to ordering DELL...) have just
one ordinary PCI-e slot - usually PCI-e x4 or PCI-e x8 wired as x4 -
along with a couple of PCI-e x16 graphics slots.

Does anybody know of any reason why the second PCI-e card should not be
perfectly happy stuffed into an unused PCI-e x16 graphics slot?

Is anyone aware of anything - other than the additional 8 or 12 lanes -
that's different about the graphics slots?

I mean do they explicitly say "graphics" slot because they just want you
to know you can put graphics cards in there, or because you _must_ put
graphics cards and nothing else in there??

I ask this because at one point, our hardware guys were told that some
PC manufacturers or MB suppliers would not support anything other than a
graphics card in the slots designated for graphics. They didn't say it
wouldn't work, just that they "won't support". (That's equivalent to
"no comment". :-)

If I get the purchase approved, it'll be the last time for a while, so
I'd better not mess up by making unwarranted assumptions.

Any hardware gurus want to comment? Anybody found just the exact
comparison on a reliable site?

Kevin (lusting after some new iron)

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