The hardware (which I plan to overclock): Motherboard: P5E3 PREMIUM/WIFI-AP @n LGA 775 DDR3 Intel X48 ATX Intel http://www.newegg.com/Product/Product.aspx?Item=N82E16813131276 RAM: 4 gigs total, so 2x G.SKILL 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333 [7-7-7-18 timing] (PC3 10600) 1.65V Dual Channel Kit Desktop Memory http://www.newegg.com/Product/Product.aspx?Item=N82E16820231178 CPU: Intel Core 2 Quad Q9450 Yorkfield 2.66GHz 12MB L2 Cache LGA 775 95W Quad-Core http://www.newegg.com/Product/Product.aspx?Item=N82E16819115042&Tpk=q9450 Hard drives: An old 250 gig for backup and 3x Seagate Barracuda 7200.11 ST3750330AS 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s http://www.newegg.com/Product/Product.aspx?Item=N82E16822148298 DVD drive: ASUS ASUS Black 20X DVD+R 8X DVD+RW 8X DVD+R DL 20X DVD-R 6X DVD-RW 14X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 20X DVD±R DVD Burner with LightScribe http://www.newegg.com/product/product.aspx?item=N82E16827135156 Graphics card: Nvidia 8800 Ultra (which I already own, but will replace the stock cooler eventually with something else) Link for those interested: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130346 Case: SILVERSTONE TJ10-BW Black Aluminum ATX Mid Tower http://www.newegg.com/Product/Product.aspx?Item=N82E16811163089 Heatsink: I wanted a Thermalright ultra 120 extreme, but I think it is just too heavy for my mobo to handle, considering this computer will be taken on about 10+ flights every year. However, (based on this really old Anandtech article http://www.anandtech.com/casecooling/showdoc.aspx?i=3005&p=6), after looking several of the highest rated heatsinks they were all (expectedly) very heavy. A problem, because I am aiming this system at quietness. So I really need a little advice on this one, though I know I'm going to overclock and attach as many 120mm fans as I can to the heatsink. OS: Windows XP Pro 64 bit Thermal paste: Arctic silver 5, which I have as well. I have a few other concerns however... Most of the stuff I'm buying is listed as retail, rather than OEM (like the motherboard), does that matter? Also, I'm having a hard time deciding what fans to get. I've heard great things about Scythe fans, and because I'm trying to make this case as quiet as possible, they seem to be a good choice for both 80mm and 120mm. And finally, is this a smart build? Feedback about anything is appriciated. I know some of the stuff is overpriced (ie TJ10), but I'm willing to pay. Thanks!