posted: May. 12, 2008 @ 1:17p
I'm not entirely convinced a GeForce 6200 would be faster than a Radeon 9600.
Here is a thread on another forum on the topic: http://www.techspot.com/vb/topic52999.html
They all agree the 9600 is faster when it comes to GPU power but the 6200 "has more features" which I assume to mean Dynamic Lighting and Hardware T&L or similar GPU features.
Anyway, it looks like you can get a Radeon 2400 without an extra power connector or the next step up is a Radeon HD3650 which has a MOLEX (HD/CD Drive style) power connector but according to a few reviews I scanned through, its pretty light on the power requirements.
GeForce side of the house, anything on AGP above a 6200 seems to require extra power but most of them are the same MOLEX type connector (I think they assume if you have an AGP Board you prolly dont have a Power Supply with PCIe connectors).
Here your best options are the 7300GT, 7600GS and 7600GT
So personally I would pick the Radeon 3650 in that lineup as its the newest card, has gone through a die shrink (55nm = less power required) and you can pick one up for just under $100 if you shop around.