Upgrading PC i7 Build $900 budget

[zig340]

APPROXIMATE PURCHASE DATE: By end of 2009 BUDGET RANGE: Around $900 Before Rebates
SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: WoW, Gaming, Internet, and Music
PARTS NOT REQUIRED: Everything except CPU, Mobo, RAM, PSU, and cooling.
PREFERRED WEBSITE(S) FOR PARTS: Newegg.com and Tigerdirect.com, but I am open to others.
PARTS PREFERENCES: Intel, Corsair, Gigabyte, OCZ, BFG, open to others.
OVERCLOCKING: Maybe SLI OR CROSSFIRE: Maybe(in the future)
MONITOR RESOLUTION: 1920x1200
ADDITIONAL COMMENTS: I am planning on overhauling my current computer bought from cyberpowerpc.com and doing it myself this time.

My budget is set tentatively around $900 and I am focusing on replacing my CPU, MOBO, and RAM. I am not sure myself whether or not the PSU/cooling I currently have would suffice for my upgrade, so if I have to I am willing to upgrade these as well.

I also don't really have any idea what I should get when it comes to CPU cooling so suggestions in this category would be rather helpful. (Although I would prefer to avoid water cooling if possible)

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The first links below are the parts to my current PC minus the parts mentioned above that I want to upgrade.

CASE: COOLER MASTER COSMOS 1000 ATX Full Tower Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119138

(this case is HUGE.)

HARD DRIVE: Western Digital VelociRaptor 300GB 10000 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136322&cm_re=velociraptor-_-22-136-322-_-Product

GRAPHICS CARD: BFG GTX 285 OC 1GB PCI-Express Video Card
http://www.frys.com/product/5819363

(keep in mind I may eventually buy another 285 and go SLI with this same build.)

OPTICAL: SONY NEC OPTIARC 20X DVDRW 7200S SATA BLACK DVD drive
http://www.computersunlimited.com/sony_nec_optiarc_20x_dvdrw_sata_black_bulk_46981_prd1.htm

(couldn't find a good link for this)

POWER SUPPLY: Xion 600WATT Supernova Power Supply SLI/Crossfire ready
http://www.newegg.com/Product/Product.aspx?Item=N82E16817190012&cm_re=xion_600w_supernova-_-17-190-012-_-Product

The power supply is a part that I just can't seem to make my mind up on. I plan on keeping this build for quite a while so I would very much like to upgrade to a higher wattage but if I can get by without upgrading it now then I would prefer that route.

COOLING: I currently have four fans that are running in my build that came already installed in the Cosmos case. I do not know if better cooling is needed for my upgrade. Advice/suggestions here would be great.

SOUND CARD: Creative Labs Audigy SE
http://www.newegg.com/Product/Product.aspx?Item=N82E16829102012&cm_re=creative_labs_audigy_se-_-29-102-012-_-Product

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These next links are the parts that I plan on upgrading to.

CPU: Intel Core i7-920 Bloomfield 2.66GHz LGA 1366
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115202

I am under the impression that this is a very solid choice of CPU for Price vs. Performance.

CPU COOLER: ??? I have no idea what I should get here. Suggestions would be great. (non-watercooling)

MOBO: GIGABYTE GA-EX58-UD5 LGA 1366 Intel X58 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128362&Tpk=GIGABYTE%20GA-EX58-UD5

This is the mobo I have currently narrowed my choices down to, if anyone has a better suggestion for my build's mobo, do tell.

RAM: OCZ 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227501&cm_re=ddr3_1600_6gb-_-20-227-501-_-Product

I'm wasn't really sure what brand to choose when I came to RAM but I do know that I want 6GB of 1600MHz triple channel.

PSU: CORSAIR 850HX 850WATT Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011&Tpk=850HX

If I was forced to upgrade my PSU during this upgrade this was the replacement PSU I had in mind. I was tempted by Corsair's 1000WATT PSU but I don't think I need that much power.

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TOTAL PRICE: $728 before CPU cooler
Price with PSU: $908 before CPU cooler

If I forgot anything please let me know. Any and all comments, suggestions, or advice are welcome. Let me know what I can do to improve my build.

Thanks a lot in advance. I appreciate it.

 

[dpaul8]

If you stick with that system you should definitely upgrade your PSU to the Corsair unit you specified. The GTX 285 is a power hog, drawing up to 204 W. The i920 processor draws up to 135 W and the Northbridge about 31 W. Adding in the other power draws, such as system fans, HDD, ODD, etc. will add another 100 W approximately. That puts you at about 470 W. So your old 600 W power supply should be adequate for one graphics card. However, if you add a second GTX 285, you will be over 600 W, and you need to upgrade.

Most of the newer components, draw considerably less power than the older components. For instance, if you went with two ATI 5770 graphics cards, these cards draw a maximum of only 108 W. So two of them with your system would draw about 482 W, so you could use your 600 W power supply.

 

[zig340]

Yeah I figured that was about where I stood when it came to my power supply. I'm pretty sure that I will opt to stick with the 600W one for now, but i'll make sure to upgrade to the 850W the first chance I get.

Thanks a lot for replying, I appreciate it.
If anyone had any suggestions for cpu coolers, maybe one that you already have running on your own pc that would be amazing.

Let me know what you guys think about this build.