What do you think about those pc set's?

[przebar]

Hello!
I'm going to buy a new PC. I want to get full graphic power. I'm afraid that processor or graphic card will be slowing down the pc.

Tell me what do you think about this sets:
1.Intel Core 2 Quad 9650 + Geforce GTX 280 x2 (SLI)
2.Intel Core 2 Quad 9650 + Geforce GTX 260 x2 (SLI)
3.Intel Core 2 Quad 9650 + Geforce 9800 GX2

4.Intel Core 2 Quad 6700 + GeForce GTX 280 x2 (SLI)
5.Intel Core 2 Quad 6700 + GeForce GTX 260 x2 (SLI)

6.Intel Core i7 920 + Geforce GTX 280 x2 (SLI)
7.Intel Core i7 920 + Geforce GTX 260 x2 (SLI)
8.Intel Core i7 920 + Geforce 9800 GX2

i'm going to buy also 4GB DDR3 Dual Channel or 6GB DDR3 Triple Channel (it depends on the processor)
Thank's for attention

Ps. Did anyone saw a benchmark working online? (using chosen components of the pc? (processor, graphic card, RAM, etc.))

[David (PassMark)]

For CPU I would Core i7 965 or Core i7 920 if you can't afford the 965

For video I would get the Gefore GTX 285 or 280. I would not get SLI.

SLI, 1) only works with a few specfic games 2) increases stability and compatibilty problems, 3) Means you need a larger power supply 4) Increases the noise level 5) restricts your choice of motherboard 6) is twice as likely to suffer a hardware failure at some point

Make sure you use 64bit Windows. 6GB is wasted otherwise.