Dual AGP slot motherboard...?

AnyMal

Lifer
Nov 21, 2001
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Does anyone know of dual AGP slot motherboards? If so, where might I find one? Any help would be appreciated.
 

AndyHui

Administrator Emeritus<br>Elite Member<br>AT FAQ M
Oct 9, 1999
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No.

AGP is a port, not a bus, and therefore by definition only supports one device.

While there are AGP bridge chips to get 2 video processors to operate on a single board, ie Voodoo 5 or ATi Rage MAXX cards, no motherboards exist with 2 AGP slots.
 

Jonathan Q Bishop

Junior Member
Apr 26, 2017
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No.

AGP is a port, not a bus, and therefore by definition only supports one device.

While there are AGP bridge chips to get 2 video processors to operate on a single board, ie Voodoo 5 or ATi Rage MAXX cards, no motherboards exist with 2 AGP slots.
i will have to call redactedbecause there is a 6 month period that entailed the sail od dual agp slot mobos, i know because a friend of mine purchased one



No profanity in tech.


esquared
Anandtech Forum Director
 
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XavierMace

Diamond Member
Apr 20, 2013
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Only systems I recall seeing with multiple AGP was HP/Compaq Alpha's and the only reason I recall that is I worked with them at the time.
 

BonzaiDuck

Lifer
Jun 30, 2004
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Odd. I don't have a statistical sample, but I get the impression that there are more recent threads or thread-resurrections that concern old hardware.

If I were right, why would that be so?
 
Feb 25, 2011
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Weel the minimum config is one drawer, I doubt there is two boards in there. Dual cpu dual agp board would be my guess.

If I'm reading the doc right, it's 1-4x 2-CPU nodes/drawers per chassis, each chassis includes 5 PCI-X and 1 AGP slot.
 

DaveSimmons

Elite Member
Aug 12, 2001
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Odd. I don't have a statistical sample, but I get the impression that there are more recent threads or thread-resurrections that concern old hardware.

If I were right, why would that be so?

It's usually spammers of one kind or another, getting postcount++ before starting spam threads, or starting right off the bat with links to their website or youtube video.

This is an example, I'm not saying it refers to this thread's necromancer:
Say you make a series of youtube videos about the history of graphics cards. To promote the AGP chapter, you do a Google search for forum threads on AGP. You join the forums that still exist, and necro the threads with some comment that mentions your youtube video in passing.
 

whm1974

Diamond Member
Jul 24, 2016
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I did hear about a prototype dual AGP slot board at least ten years ago that was in development but was halted once PCIe arrived. Unfortunately I don't recall any details about it.
 

DuronBurgerMan

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Mar 13, 2017
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nathanddrews

Graphics Cards, CPU Moderator
Aug 9, 2016
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3Dfx used SLI over PCI only.
No one used multi-GPU with AGP (outside of a lab anyway)
NVIDIA reintroduced SLI over PCI-Express. AMD followed suit with CrossFire.

There were isolated instances of people using modified drivers and hardware hacks to force SLI between the NVIDIA 6000-series AGP and PCI-Express cards, but I think that's only because cards like the 6600GT were built from the ground up to be PCI-Express and the AGP models were identical other than the AGP bridge chip. Anyway, based upon links I can find today it all came out to be little more than a proof of concept at best, not something actually usable.

If you want the best single AGP graphics available, look for an ATI/AMD HD4670 or HD3850.