Physx Cards Waste of Money

Depends, what games do you play and do they support the PhysX card? Only a few games support it and it does add some great effects.

it's required for playing free games like Red Facti.. I mean Cell Factor. And some downloadable UT3 maps.

GRAW2 and UT3 support Ageia PhysX cards

As others have said, for most games it's a waste of money. For games that support it... it's pretty cool. They're even starting to make UT3 maps that are designed around using the Physx card. I still wouldn't buy one though.  

Its pretty limited for now(and also seems to include the games that use ageia's software physx)....but thats what happens when you try to make a product just to have ATI and Nvidia claim they have one on the way, then years later still nothing(i remember all the talk of using an old graphics card for a PPU)....

http://www.ageia.com/physx/titles.html

Waste of money. It won't be until DX11 (sometime in late 2009) that accerated physics becomes a "standard" . About that time I think there will be an Intel solution as well which should be fairly standard.
Even with accerated physics, basic physics has a LONG way to go.

I'd consider buying one if they'd release a PCI-e version. I mean, really!

^Why? The PCI version has more than enough bandwidth to run those Physics calculations. But a PCIe x1 would be nice since it is the only socket that is not used 90% of the time.

PhysX is a dead end.

Ageia will likely be bought by either nVidia or AMD, supposedly they have already been sold, but no mention of to whom that I saw last time I checked.

Since intel bought Havoc and killed all VPU-acceleraed physics hopes, then it's likely that one of the other players will buy Ageia to ensure that not all games go Havoc only.

Like Shadow says PCIe 1X was not a limitation, even Ageia said they didn't need one as PCI was already powerful enough.

Overall it's a dead end, if not because of ATi and nV's actions, definitely after intel's purchase of Havoc.