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PCI Riser??

New MessagePCI Riser?? (modified 0 times) jsmmd
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http://search.ebay.com/search/search.dll?MfcISAPICommand=GetResult&SortProperty=MetaEndSort&ht=1&query=PCI+riser


I was wondering, would another riser possibly work, to expand the device beyond 1 PCI slot?

04-10-2003 12:30:38

New MessageRE:PCI Riser?? (modified 0 times) Kludgemeister
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You would need the "active" kind of riser, that assigns PCI addresses to the extra slot(s). Otherwise, I'd think it should work. There might be space in the front chassis extension to remount the HD there to gain some headroom.

Kludgemeister

04-11-2003 11:00:28

New MessageRE:PCI Riser?? (modified 0 times) TheBigDog
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Can you elaborate a little on the "active" pci riser? How can one distinguish an "active" from "passive"?
04-11-2003 11:31:13

New MessageRE:PCI Riser?? (modified 0 times) Kludgemeister
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Each PCI slot has some unique address lines so that the system knows what card is plugged in what slot. Most multi-slot risers will plug into one slot, but have cables that plug into adjacent slots to pick up the address lines. I.e. 3-slot riser needs 3 empty slots on the M/B. There are cards (I can't find a link to one right now) that have circuitry to "synthesize" the extra addresses so you only need 1 available slot on the M/B. That's the kind of card we would need.

Kludgemeister

04-11-2003 12:00:34

New MessageRE:PCI Riser?? (modified 0 times) jsmmd
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I believe he's referring to the: 2U 32-bit 3.3V Signaling Active PCI Riser
http://www.tmc-uk.com/supports/general_faqs/riser_card.htm


If so, then this should be it:
http://www.rackmountpro.com/productpage.cfm?prodid=973

04-11-2003 12:15:28

New MessageRE:PCI Riser?? (modified 0 times) Kludgemeister
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Yes, that's it, jsmmd. It's too bad that in most of the pictures of the "passive" risers they have the pigtails plugged into the riser board iself...

One limitation to using several boards would be "The board is designed to provide 2A (average) of +5 V current for an add-in board in the PCI slot." (per the motherboard manual)

Kludgemeister

04-12-2003 22:14:08

New MessageRE:PCI Riser?? (modified 0 times) jsmmd
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So the MB is putting out 5v, the riser is desgined for 3.3?
04-12-2003 23:23:13

New MessageRE:PCI Riser?? (modified 0 times) Kludgemeister
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No, just that the expansion boards couldn't draw more than 2A total of 5V (10 watts total) I don't know if that would be a big limitation, but it sounds like the power distribution circuitry of the motherboard isn't designed for a lot of expansion...

Kludgemeister

04-12-2003 23:26:57

New MessageRE:PCI Riser?? (modified 0 times) Kludgemeister
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VIA makes a 2-slot riser card for their mini-itx motherboard, shown at http://www.mini-itx.com/store/default.asp?c=8

Kludgemeister

04-17-2003 15:12:30

New MessageRE:PCI Riser?? (modified 0 times) jsmmd
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Kludgemeister,

Any thoughts on this?

Anyone ever explore adding in a rise?

I've seen some risers that get power from a standard powersupply power cable.

12-12-2003 22:01:28

New MessageRE:PCI Riser?? (modified 0 times) PeteC
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An FYI related to existing riser. The tuner/video card that I used is touching the HD I used and separted by a thin sheet of plastic. Best to use a smaller footprint (ht) HD or even a notebook drive. Cutting slot out for video card wasn't that easy with dremel. Much more difficult than the slim CDRom cut out as the metal is slightly thicker.
12-12-2003 23:57:25

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