Building My first Machine - Tips?

[xenotrop]

So over the last month i have been doing a lot of reading trying to narrow the range down for parts for this new machine i am going to piece together here soon and was wondering if there are any issues people could discern from the configuration. I also have no real concrete ideas on how big of a power supply to place in the machine or which one, help on that too. Any way here is what i am thinking.

Mobo - ASUS Striker II Extreme LGA 775 NVIDIA nForce 790i Ultra SLI ATX Intel Motherboard
Cpu -Intel Core 2 Duo E8400
PSU - CORSAIR CMPSU-750TX
Memory - OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666)
Graphics Card - gtx260 216 (possibly two)
Case - Antec 900
HD - ?
Optical - ?

I am looking to overclock my cpu and have a mother board that will we capable of handling upgrades for a least a year or so. I am unsure if the DDR3 option is worth it at this point as well, and have been reading much of the debate on whether to go dual 4850's or the gtx260. I may be doing a dual gtx260 configuration by the end of the year so power is an issue there as well.

Bottom line, advise would be awesome! (Oh and I'm trying to keep my budget at under 1200)

 

[aevm]

If you want dual GTX 260 cards get a Corsair 1000HX for $240.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139007&Tpk=1000HX
It's certified for two GTX 260 cards. The 750TX isn't. The list is here:
http://www.slizone.com/object/slizone_build_psu.html

Frankly, you're buying overpriced parts and your budget doesn't even allow it.

Try something like this instead:

Asus P5Q Pro or GA-EP45-UD3P
E8500
750TX or Silencer 750W (at $100 each, the Silencer is the smarter choice)
Mushkin 4GB DDR2-800 http://www.newegg.com/Product/Product.aspx?Item=N82E16820146731
Visiontek HD 4870 X2
Antec 900 or NZXT Tempest or RC-690
WD6400AAKS or Seagate 640GB
SH-S223Q

and forget about SLI or Crossfire. This would be slower than GTX 260 SLI but faster than GTX 260 or even GTX 280. The cost would be about 110+180+100+40+530+110+75+25, give or take a bit. That's about $1170.

 

[aevm]

Oops you want to overclock. Add a Xigmatek HDT-S1283 to the list. That makes it exactly $1200, how about that

Forget about "mother board that will we capable of handling upgrades for a least a year or so." The setup you picked and the one I proposed would both allow you to upgrade the CPU to a Q9550, for example, but not to the i7 920 or i7 940 because those need a different socket type.