Last minute questions pre purchase

So I was putting some parts together in my cart, because in all honesty I'm being hounded to purchase my computer already. I noticed newegg has a shell shocker deal for 8gb ram. I don't know the difference between buying 1 8gb stick and buying 2 sticks of 4gb (dual channel confusion). Is there anything I should know before forking out money for ram in general? I know 1333 won't void a cpu warranty. It says 1.5v in the description so I don't think there should be any compatibility issues

Patriot Gamer 2 Series 8GB 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model PG38G1333EL

Here's the rest of my build that I currently have in the cart.

LG DVD Burner Black SATA Model GH24NS70 - OEM
Item #: N82E16827136236
Return Policy: Standard Return Policy
$16.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136236

COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel + Plastic and Mesh Bezel ATX Mid Tower Computer Case
Item #: N82E16811119197
Return Policy: Standard Return Policy
$99.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119197

ASUS VW246H Glossy Black 24" 2ms(GTG) HDMI Widescreen LCD Monitor
Item #: N82E16824236049
Return Policy: Monitor Standard Return Policy
$179.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236049

CORSAIR Professional Series HX850 (CMPSU-850HX) 850W ATX12V 2.3 / EPS12V 2.91 80 PLUS SILVER Certified Modular Active PFC ...
Item #: N82E16817139011
Return Policy: Standard Return Policy
$169.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

ASUS P8Z68-V/GEN3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
Item #: N82E16813131792
Return Policy: Standard Return Policy
$179.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131792

Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 ...
Item #: N82E16819115072
Return Policy: Iron Egg Replacement-Only Return Policy
$224.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072

Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)
Item #: N82E16820148442
Return Policy: Limited Replacement Only Return Policy
$174.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148442

50 dollars worth of promo discount codes and $35 in MIR too. Free shipping on all items. :D

I can't figure out which video card I want so I may just use the onboard video to test out all the components and order that within a week. Another thing worth mentioning is that there's a modular corsair 1000w power supply for sale around the same price 129.99 after MIR, maybe I should buy that instead? Dunno if it would fit inside the case. Lastly, how does that monitor I've selected look? It doesn't flat out list the refresh rate but instead the verticle min/max along with the horizontal so it seems to be around 75hz or so.
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  1. It would be helpful if we knew the intent for the rig. Such as gaming, or web surfin'.
  2. It would be intended for gaming and to a lesser degree some video editing.

    Looks like that alternate corsair psu sold out. Deactivated or a price mistake I suppose.
  3. As many people tend to do, and as I almost did, they buy a PSU that is more wattage than needed. I could run my system on a good 450W PSU, but I got a 600W. Why? Future Upgrades. In your case. 1000W is WAY too much. 450-650W is plently for any non Xfire/SLI system. Some reputable brands to look for are Corsair, XFX, OCZ, and I'm sure there are more which someone will no doubt correct me on. That's a nice i5, but if you don't intend to OC, drop down to a 2400. If you do intend to OC, you will need to invest in an aftermarket heatsink.
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