first build. need help.

[Concertina]

Hi. this is my first time building a computer. from what I have read all of the parts i have should be compatible but i wanted some opinions and suggestions if you have any. thanks.

CPU: Intel Core 2 Duo E8400 Wolfdale 3.0GHz
Newegg.com - Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor - Processors - Desktops

MOBO: EVGA 132-CK-NF78-A1
Newegg.com - EVGA 132-CK-NF78-A1 LGA 775 NVIDIA nForce 780i SLI ATX Intel Motherboard - Intel Motherboards

POWER SUPPLY: Rosewill RX950-D-B
Newegg.com - Rosewill RX950-D-B 950W ATX12V v2.2 & EPS12V v2.91 SLI 8800Ultra SLI CrossFire Ready Active PFC Power Supply - Power Supplies

GRAPH CARD: XFX PVT98UZHF9 GeForce 9800 GX2
Newegg.com - XFX PVT98UZHF9 GeForce 9800 GX2 1GB (512MB per GPU) 512-bit (256-bit per GPU) GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards

HD: Western Digital Caviar SE WD1600AAJS
Newegg.com - Western Digital Caviar SE WD1600AAJS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - Internal Hard Drives

RAM: OCZ SLI-Ready Edition 4GB 240-Pin DDR2 SDRAM DDR2 800
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227269

CASE: Antec Nine Hundred Black Steel ATX Mid Tower
Newegg.com - Antec Nine Hundred Black Steel ATX Mid Tower Computer Case - Computer Cases


Also do you think i will need more fans? other than the ones already in the case.

[KarmaKiller]

HI and welcome to TIMO.
I would suggest the 750i. It's cheaper, and has most all the other options.
And I would highly recommend you get a different PSU. Rosewill PSU's are not the best. There are better choices out there. And you could save yourself $~150 on it also.
Newegg.com - CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Power Supplies
That is a much better PSU, that's a helluva lot cheaper.
And with the money you saved on the PSU, you could upgrade to a GTX 280. It's faster then the 9800GX2, and uses less power.
Just my opinion.

[Concertina]

thanks for the advice but one reason i wanted that power supply was because it was 900 watts. Do you think 750 will be enough since i am planning to eventually go tri-sli with the graphics cards? Also how do you go about figuring out how much power your computer will need?

[#43 fan]

If you're going to go triple SLI, then a higher wattage power supply would be best.
IMO, Rosewill isn't the best maker of power supplies. I would go for a high wattage OCZ, Corsair, or PC Power and Cooling.

[thephilosophizer]

To be honest I think you should redress your priorities before doing anything else. First off, what is your budget? Also, why get such a cheap hard drive? Not only is 160 smallish for a even a laptop these days, but with the budget you seem to be suggesting, you could get a velociraptor; this wd 640 is the cheapest I would go with.
And with the gfx, I would probably start with a 260, there are newer, and really fast, and don't suck the same kind of power the gx2 does.
Two last things, one I would go quad core, either the q9300 (45nm) or the q6600. And I would do faster ram, especially since you are already going for a $200+ mobo, I would go ddr3.
Ultimately, I think you should really layout your budget, and your goals, and then we can really draw out the best possible setup.

[batmeat]

Everybody has pretty much said everthing I would say. You don't need 950 watt PS if you're planning on using a single graphics card. I'd save some dinero and get a Corsair 750 like Karma mentioned. It's what I got and it's solid and stable. Very little flucuations on the rails under load.

[Concertina]

Would the 750i mobo that Karmakiller mentioned be able to operate with this ram?
Newegg.com - G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory - Desktop Memory

[KarmaKiller]

NO. That's DDR3. You'll need DDR2.

[Concertina]

Is it worth getting a more expensive mobo just for the ability to have ddr3 ram?

[KarmaKiller]

At this point, DDR3 really doesn't pay off for the extra performance it offers. When DDR3 gets cheaper, and prices drop on compatible Mobo's, then it'll be worth it. But IMO, it's not justified for the price ATM.

Another thing you should consider, is Intel is releasing their new line up of CPU's here shortly. And those are gonna blow away anything that's on the market now. At first it's gonna be pricey, but, it's going to drop all the prices of the current stuff. So if you buy now, be prepared to see the exact same things you just bought for a lot cheaper.
It sucks, but that's how PC's go anymore.