Is Geforce 8400 PCI much of an upgrade to my Geforce 6200

[brythespy]

I have an old mobo PCI ONLY that i cannot upgrade so the best PCI card i can get is a Geforce 6200 TC with 256mb ram. So I found a Geforce 8400 [Sparkle] for ~30$.
I was wondering if this is much of an upgrade. My geforce 6200 can play COD4 at around 40-60FPS with everything LOW and it is just short of the minimum (geforce 6600) . I want to get the 8400 so i can play Black ops [minimum geforce 8600]

I also have another question. Is my understanding of the geforce series correct? For example a 6600 is worse than a 7200. But I keep hearing that it depends on the x in > Geforce *x00 < not the * so actually the 6600 is better than a 7200. Which is correct?

Or if you can find a better PCI ONLY GPU card

 

[4745454b]

It might be mildly better because its not a TC card. Other then that because they both use the PCI bus they will be junk for playing games.

I'm not familiar with a 7200. Basically like with AMD cards the first number is the generation. This doesn't matter much when looking at the performance but can give you a clue as to the process and things it supports like DX, SM, etc. The second number is the "performance", and hence 6 is better then 2 I would think the 6600 is better then the 7200. This is not a hard and fast rule however.

I would limp along with that 6200TC and upgrade the motherboard. Even an old motherboard that supports AGP with a good AGP card will be faster then that 6200 or 8400.