If you look at actual benchmarks the 6450 barely scratches the PSU at around 30W of usage.
The GT 430 uses around 51W. So, overall, I am not too keen on the higher consumption of the GT 430.
Alright, it's just that I could get the GeForce card at my local store, which is great because shipping prices to Canada are expensive enough to make the Radeon cost more than the GeForce. Is the power consumption just too high on it, or could I get by? Or would upgrading my PSU be better in the long haul? Or should I just get a completely new computer with more options in terms of upgradeability?
I look to you for advice, oh Gods of PC knowledge.