Looking at upgrading here in a few weeks for the latest and greatest. I probably won't be overclocking due to my lack of knowledge in that area, but the GPU I have selected comes OC'd already (It was only an extra 10 bucks so I figured what the hell). A few of my questions are: Will my current power supply be enough to run this? Note that I'm not using the 500W that came with the case, but an Enermax 600W. I've heard that the 6600 overclocks very nicely, so if I do decide to go that route, what fan/heatsink combo would be recommended, and also power supply if needed? Also, I'm looking at getting either 4 or 8 gigs of RAM, but newegg only has sticks of 1 gig each. If I were to stick with 4 gigs, would it be better to go 4x1 or 2x2? I'm assuming 2x2 since that will leave room for upgrade later. Thanks!
Case
APEVIA X-Navigator ATXA8NW-AL/500 Silver/Black Aluminum ATX Full Tower Computer Case 500W Power Supply - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16811144089 (Recycled)
CPU
Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017
Mobo
ASUS P5K-E/WIFI-AP LGA 775 Intel P35 ATX Intel Motherboard - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131196
GPU
GeForce 8800 GTS
http://www.newegg.com/Product/Product.aspx?Item=N82E16814133215
RAM
G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory - Retail (8 gigs of this)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231121
Sound
Creative Sound Blaster X-Fi XtremeMusic 7.1 Channels 24-bit 96KHz PCI Interface Sound Card - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16829102188 (Recycled)
PSU
ENERMAX Noisetaker EG701AX-VE SFMA(24P) 600W EPS12V Power Supply 90~265V
http://www.newegg.com/Product/Product.aspx?Item=N82E16817194001 (Recycled)
HDD
Western Digital Caviar SE16 WD2500KS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16822144701 (Recycled)
Monitor
SAMSUNG 204B-SV Silver-Black 20" 5ms LCD Monitor with Height & Pivot Adjustments 300 cd/m2 800:1 - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16824001225 (Recycled)
OS
Microsoft Windows Vista Home Premium SP1 64-bit English 1pk DSP OEI DVD - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116488
Case
APEVIA X-Navigator ATXA8NW-AL/500 Silver/Black Aluminum ATX Full Tower Computer Case 500W Power Supply - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16811144089 (Recycled)
CPU
Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017
Mobo
ASUS P5K-E/WIFI-AP LGA 775 Intel P35 ATX Intel Motherboard - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131196
GPU
GeForce 8800 GTS
http://www.newegg.com/Product/Product.aspx?Item=N82E16814133215
RAM
G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory - Retail (8 gigs of this)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231121
Sound
Creative Sound Blaster X-Fi XtremeMusic 7.1 Channels 24-bit 96KHz PCI Interface Sound Card - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16829102188 (Recycled)
PSU
ENERMAX Noisetaker EG701AX-VE SFMA(24P) 600W EPS12V Power Supply 90~265V
http://www.newegg.com/Product/Product.aspx?Item=N82E16817194001 (Recycled)
HDD
Western Digital Caviar SE16 WD2500KS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16822144701 (Recycled)
Monitor
SAMSUNG 204B-SV Silver-Black 20" 5ms LCD Monitor with Height & Pivot Adjustments 300 cd/m2 800:1 - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E16824001225 (Recycled)
OS
Microsoft Windows Vista Home Premium SP1 64-bit English 1pk DSP OEI DVD - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116488