X1950pro?

'EY ALL
I have a Pentium 4 650
2gb RAM
X850XT PE
And I'm thinking whether I should upgrade to a X1950pro?
Couple of questions:
My CPU will be a bottleneck, how big of one will it be with newer games?
I have decided against Vista / DX10. I doubt a P4 650 is enough for it, and Vista + DX10 video card is to expensive? Do you think this is a good choice?
I prefer ATI. I am used to there tools, I need good shading power, and I NEED HDR + AA.
My power supply is weak, does the X1950pro use more power than a X850XT PE? Any cards of same speed use less power?
What do you think?
I have a Pentium 4 650
2gb RAM
X850XT PE
And I'm thinking whether I should upgrade to a X1950pro?
Couple of questions:
My CPU will be a bottleneck, how big of one will it be with newer games?
I have decided against Vista / DX10. I doubt a P4 650 is enough for it, and Vista + DX10 video card is to expensive? Do you think this is a good choice?
I prefer ATI. I am used to there tools, I need good shading power, and I NEED HDR + AA.
My power supply is weak, does the X1950pro use more power than a X850XT PE? Any cards of same speed use less power?
What do you think?