what should I change in my new rig

[warJack]

EVGA 768-P2-N831-AR GeForce 8800GTX 768MB GDDR3 PCI Express x16 HDCP
Video Card - Retail
CORSAIR Dominator TWIN2X2048-9136C5D 2GB (2 x 1GB) 240-Pin DDR2 SDRAM
DDR2 1142 (PC2 9136)
Intel Core 2 Extreme QX6700 Kentsfield 2.66GHz LGA 775 Processor
Model EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX
GIGABYTE GZ-FA1CA-ASB Black 1.0 mm Aluminum body ATX Full Tower
Thermaltake Toughpower 850W W0131RU – NVIDIA QUAD-SLI APPROVED ZALMAN
CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink - Retail SONY Black
1.44MB 3.5" Internal Floppy Drive Windows 98SE/ ME/ 2000/ XP - OEM
LITE-ON LightScribe IDE Model LH-20A1H-186 - Retail SONY Black IDE
DVD-ROM Drive Model DDU1615/B2s - OEM Arctic Silver 5 Thermal
Compound - OEM 4 sata drives from previous build Viewsonic 22"
monitor Razor Diamondback mouse Logitech G15 keyboard Sound Blaster
X-Fi XtremeMusic sound card

 

[Dave]

EVGA 768-P2-N831-AR GeForce 8800GTX 768MB GDDR3 PCI Express x16 HDCP
Video Card - Retail
CORSAIR Dominator TWIN2X2048-9136C5D 2GB (2 x 1GB) 240-Pin DDR2 SDRAM
DDR2 1142 (PC2 9136)
Intel Core 2 Extreme QX6700 Kentsfield 2.66GHz LGA 775 Processor
Model EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX
GIGABYTE GZ-FA1CA-ASB Black 1.0 mm Aluminum body ATX Full Tower
Thermaltake Toughpower 850W W0131RU - NVIDIA QUAD-SLI APPROVED ZALMAN
CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink - Retail SONY Black
1.44MB 3.5" Internal Floppy Drive Windows 98SE/ ME/ 2000/ XP - OEM
LITE-ON LightScribe IDE Model LH-20A1H-186 - Retail SONY Black IDE
DVD-ROM Drive Model DDU1615/B2s - OEM Arctic Silver 5 Thermal
Compound - OEM 4 sata drives from previous build Viewsonic 22"
monitor Razor Diamondback mouse Logitech G15 keyboard Sound Blaster
X-Fi XtremeMusic sound card

If you want it reliable, change the power supply to a seasonic brand.
Thermaltake toughpower is C-grade. You don't need 850W, but probably close
to 700W. -Dave

 

[warJack]

C-grade

Dave what does C-grade mean

 

[Dave]

Dave what does C-grade mean

Not an actual technical term. It means that there are top tier, lower tier
and even lower tier and thermaltake toughpower fits into that third level of
quality. Not terrible, but NOT something I'd use in a high-end build.
Seasonic or nothing, if you are building high-end. -Dave

 

[Paul]

EVGA 768-P2-N831-AR GeForce 8800GTX 768MB GDDR3 PCI Express x16 HDCP
Video Card - Retail
CORSAIR Dominator TWIN2X2048-9136C5D 2GB (2 x 1GB) 240-Pin DDR2 SDRAM
DDR2 1142 (PC2 9136)
Intel Core 2 Extreme QX6700 Kentsfield 2.66GHz LGA 775 Processor
Model EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX
GIGABYTE GZ-FA1CA-ASB Black 1.0 mm Aluminum body ATX Full Tower
Thermaltake Toughpower 850W W0131RU – NVIDIA QUAD-SLI APPROVED ZALMAN
CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink - Retail SONY Black
1.44MB 3.5" Internal Floppy Drive Windows 98SE/ ME/ 2000/ XP - OEM
LITE-ON LightScribe IDE Model LH-20A1H-186 - Retail SONY Black IDE
DVD-ROM Drive Model DDU1615/B2s - OEM Arctic Silver 5 Thermal
Compound - OEM 4 sata drives from previous build Viewsonic 22"
monitor Razor Diamondback mouse Logitech G15 keyboard Sound Blaster
X-Fi XtremeMusic sound card

With respect to the EVGA motherboard, I'd read the reviews on Newegg,
for all the different 680i offerings. EVGA Tech Support is one issue.

I was reading an overclocking thread over on xtremesystems.org , and
this is what happened to a new not-overclocked EVGA 680i, just installed:

"The stench of death filled my nostrils as i realized the brilliant
light show was actually a vreg powered sparkler, as i jumped for
the wall plug i knew it was frivolous action. my heart sank low
into my stomach as i realized my creations life was as short lived
as my faith in EVGA.

to cut things short the two vregs north west of the CPU exploded
into a shower of sparks and sizzles ending is an eerie smoke filled
sight."

That is a description of a rail-to-rail short across some MOSFETs.

I think I'd search for something else.

Paul