Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > AGP to PCI-E bridge/adapter?
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voodoo_papa   03-26-2008 at 03:25:56 PM

Someone had told me of a physical AGP to PCI-Express adapter that would make it possible to use a PCI-E video board with an AGP motherboard.

I cant seem to find one of these anywhere and have a hard time believing it exists. Has anyone heard of this? If so, could you please post a link to the device for me?

Thanks!


Message edited by voodoo_papa on 03-26-2008 at 03:28:48 PM
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wolfseeker2828   03-26-2008 at 03:40:12 PM
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That doesn't exist. AGP slots use less physical lanes than a PCI-e slot anyways, so even if it did, the PCI-e slot would perform like an AGP card. Sorry. You can get PCI-e motherboards for fairly cheap nowadays, though...

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gwolfman   03-26-2008 at 03:49:46 PM
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If you're that pressed to use an AGP card but have a PCIe board, ASRock makes one with AGP And PCIe, but I'm recommend just upgrading everything to PCIe.

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rolli59   03-27-2008 at 12:34:17 AM
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You are probably confusing it with the bridge chip that is on all modern AGP cards to make them compatible with AGP since the manufacturing standard is pci-e

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hesskia   03-27-2008 at 01:24:44 AM
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Newer AGP highend cards are basically PCIe cards with a 'bridge adapter' to allow it to run on an AGP port. THis adapter though, cannot be purchased separately from the OEM combination with video card.

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voodoo_papa   03-27-2008 at 04:13:25 PM
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rolli59 wrote :

You are probably confusing it with the bridge chip that is on all modern AGP cards to make them compatible with AGP since the manufacturing standard is pci-e



right thats why I questioned this. The person that told me about this item specifically said it was a physical device/adapter that would make it possible to use a PCIe video board on an AGP only mobo.

I twisted my noodle trying to figure out how such a device would work, much less fit.

thanks, I'll go back and call BS on this one :)

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joefriday   03-27-2008 at 04:57:57 PM
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they exist, in a sense that they were made (at least prototypes). I've never seen one for sale though, and only 1 obscure article written in Chinese talked about these adapters, and had a pic of them. That was back in 2005 that I found that info. It's long gone by now, but there was such a contraption devised. You could only use half height cards with the adapter of course, making it pretty worthless.

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Bronze Graphics badge jaguarskx   03-28-2008 at 01:57:29 AM
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joefriday wrote :

they exist, in a sense that they were made (at least prototypes).



Albatros announced they would produce a "riser" adapter a couple of years ago, but it never went beyond the prototype stage.

An alternative is to buy a motherboard with both AGP and PCI-e slots. Asrock (subdivision of Asus) makes such mobos, but they generally use older generation chipsets so you will not be able to install any of the 45nm Core 2 Duo CPUs made by Intel. They will also not support any type of Quad Core CPU regardless if it is an older or new generation of the Core 2 Duo CPU.

More importantly the PCI-e slot is limited to x4 lanes instead of x16 lanes. While x4 lanes will suffice for entry level/mainstream card, having so few lanes will definitely bottleneck a 8800 GT or GTS (I think I've read a 25% performance loss).

My advice, ditch AGP and simply get a PCI-e video card.

------------------------------ Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP

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joefriday   03-28-2008 at 05:36:23 PM
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jaguar, the Asrock mobo should support quadcore Kentsfields, but everything else you say is right on the money. Too old of a board for future generation CPUs, plus it's VIA, with all their inherent downsides.

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leon2006   03-28-2008 at 06:01:15 PM
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Get a new motherboard.

------------------------------ Q6600: Maximus Formula: Zalman 9700LED8GByte: Crucial Ballistics 4-4-4-12: PC6400; Vista Ultimate-64BFG XOC 4890; Disp: 70 Inch HDTV: Hauppage 2250 HDTV Tuner1.4TByte: 2x750Gbyte; RAID0; Case: Antec 900: PS:Antec Quatro 850
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davismitch   07-17-2009 at 02:57:29 PM
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I finally found one, but it is SUPER expensive ($250)

http://www.amfeltec.com/products/p [...] apter.html

Reply to davismitch
gamerk316   07-17-2009 at 07:21:36 PM
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1: Old thread
2: PCI -> PCI-E, not PCI-E -> AGP

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