$1000 build but which ram?

Hey guys, I'm building a new gaming system with a $1000 budget. Sorry I don't know how to copy NEWEGG's wishlist or cart to here like some pro members do. But I would greatly appreciate your opinions. My only concern is the ram with this build, unless there is something wrong here. Is it better to get a 2x2?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or 4x4?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


I really wanted the 4x4 but is that not good for overclocking? I"ve seen some other $1000 builds but they always have 2x2 I was just wondering why. Thanks.


THE BUILD:

1. ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner - Bulk - OEM $18.99

2. NZXT GAMMA Classic Series GAMA-001BK Black Steel ATX Mid Tower Computer Case $39.99

3. SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive $59.99

4. XFX HD-695A-CNFC Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
$299.99

5. G.SKILL Ripjaws X Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-4GBXL $49.99

6. ASRock P67 Extreme4 LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard $152.99

7. Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor BX80623I52500K
$224.99

8. Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders
$99.99

9. COOLER MASTER Hyper N 520 RR-920-N520-GP 92mm Sleeve CPU Cooler Intel Core i7 compatible $34.99

10. Arctic Silver 5 Thermal Compound - OEM $9.99

Subtotal: $991.90