Saberdude if you wait just an ince-y bit longer, the NVIDIA GeForce 6200 TurboCache will be out.
You should be able to pick-up an NVIDIA GeForce 6200 TC 16/128 for around £35
While this seems cheap it'll round out to about the same cost your spending now to get yourself a PCI-X Mobo. This said they only develop them for Athlon64 and Pentium4 Processors, heh so I guess you'll *have* to upgrade the CPU to a 64-bit, ya know because you need to for the mobo.
While it might surprise you that the TurboCache (and ATi's HyperMemory released around April) cards only carry 8/16/32MB of on-board Ram. The clever chappies at NVIDIA devised a clever way of providing what Console gamers have had for a good decade. A way of unifying the Ram being used without meaning that you compromise of what is being used. This is for the most part down to Intel's PCI-X technology given it act's like AGP for the entire bus but meh!
The benifit is that in actual fact often your paying for the memory on the card itself and not the actual card and chip. The NVIDIA 6-Series were originally designed to be interchangeable GPU, because of the MXM Technology they devised mid-2004 for Laptops.. we might start to see an enormous drop in the price of our hardware.
It has been getting a little ridiculous paying £300 for something that if it were just the GPU would cost probably around the same as the CPU equivilants.
Watford Electronics have some good deals on system parts, I'd suggest checking out thier site www.Watford.co.uk.
You can already pick up PCI-X versions of X700 & 6600GT Cards, which come to around 75% of the AGP price, this is probably deliberate to make people switch over so they can do higher volume, but who cares the reason
