New build need some help

All of it should fit in a 900. That PSU should handle a 280 but isnt really going to leave you with much headroom.

Myself I bump to the 750w Corsair.

That should work....what is this going to be for?

im going be overclocking the 9550 to to at least 3.6ghz and its going be for gaming/movie enconding

In that case Id definitely jump to a 750w PSU as your going to push on the machine.

ok thanks im guessing your talking about this one http://www.newegg.com/Product/Product.aspx?Item=N82E168... not much more then the one i pick out only 24bucks more

Bump the PSU to PC Power & Cooling 750W.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341011
Same price as the 650TX, designed by the same people, 60A instead of 52A.

The 750TX is also a good PSU but not quite as high quality as the 650TX and the PC P&C 750W.

If you're willing to go with ATI cards you could spend $12 more and get a GA-EP45-UD3P, and then buy a HD 4870 1GB now and another one later.

also will i see a big upgrade im coming from a e6750 oc to 3.4ghz?i think i will go with the pc power cooling i hear good things about them thanks for the help guys.is there a bracket i need to get for the sunbeam cooler or would it be a waste of money

I have one of those PSUs myself. Hate the red color, but the rest is just fine.  

If you don't overclock that Q9550 and you use a normal game, you will see a DROP in performance. That is, two cores will be idle, while the other two will work as before but at a lower clock. However, if you plat FSX or GTA4 (which love quads) you'll see a massive improvement. If you overclock to 3.8 GHz or so, you'll see a big improvement in all games. The quad will also show massive improvements over the dual-core if you compress videos or audio, or in certain types of work (database, programming, CAD, etc.) You would need smart multi-threaded apps, of course.

Oops. Look what I discovered at Newegg:

I dont think the Core Contact uses a separate bracket like the Xigmateks, but I think people have modded it to use the Xig backplates. As far as gains go, depends on the how many cores the app uses. Most movie encoding software does make good use of the extra cores. Most games do not. Flip a coin, take your pick.

+1 for aevm's suggestion as well. PCP&C > all for pure performance, but the Corsairs are fine units as well. I run a 750 Corsair with Xfired 4850s, an OCed E8400 on an X48 mobo. Bought the Corsair because at the time of purchase it was about $50 cheaper.

If thats the case Id look at a Xigmatek 1283 with a backplate. A few bucks more, but a proven performer.

Here's a cooler that will fit on your GA-EP45-UD3R:
ZEROtherm ZEN FZ120 120mm
http://www.newegg.com/Product/Product.aspx?Item=N82E16835887016&Tpk=Zerotherm%20Zen

You don't need a separate bracket for this one, btw.

what would be a good overclock for gameing also without killing its life span so much cause i plan on keeping it for a couple years then maybe going the i7 when they come cheaper also this is good paste http://www.newegg.com/Product/Product.aspx?Item=N82E168... this my first time having a aftermark cooler always use stock but i just got in to oc a couple weeks ago

AC MX-2 is better than AS5, because it doesn't conduct electricity.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186020

Frankly, you don't need to overclock a Q9550 for gaming (except for FSX, I think). Benefits are minimal. You can see some numbers here:
http://www.legionhardware.com/document.php?id=770&p=5

Look at the Q9650 at various clocks - the Q9550 at the same clocks is the same thing.

Example: in SupCom, 1920x1200, they got 83 fps with a Q9650 overclocked to 3.6 GHz, and 75 fps with it at 2.66 GHz. At 1680x1050 (typical 22" monitor) I'm guessing you'd get over 75 fps without any overclocking, and the typical LCD can't display more than 60 or 75 fps anyway because it has a 60Hz or 75Hz refresh rate.

Anyway, if you do want to overclock your Q9550, something like 3.4 GHz is easy. Something closer to 4GHz is possible with luck and skill and good cooling.