Either one will overclock very well. If you're ONLY concerned about overclocking, then it's the P45 > X48 > 780i. However, not much difference, since either chipset can take the CPU to its max imo.
If you want the best all-round performance (including dual GPUs), the X48 takes the cake at this moment.
- Antec Twelve Hundred Black ATX Full Tower Computer Case - Retail
- Model #:Twelve Hundred $214.95
- GIGABYTE GA-X48-DS4 LGA 775 Intel X48 ATX Intel Motherboard - Retail $234.99
- CORSAIR CMPSU-1000HX 1000W ATX12V 2.2 / EPS12V 2.91 Power Supply - Retail $279.99
- Intel Core 2 Quad Q6700 Kentsfield 2.66GHz LGA 775 95W Quad-Core Processor Model BX80562Q6700 - Retail $274.99
- 2X G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model F2-8500CL5D-4GBPK - Retail $124.99
- 2X Seagate Barracuda 7200.11 ST3500320AS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM $89.99
- BenQ G2400W Black 24" 5ms DVI HDMI Widescreen LCD Monitor - Retail $389.99
- SAMSUNG 20X DVDÂ±R DVD Burner Black SATA Model SH-S203B - OEM $26.99
- Microsoft Windows Vista 64-Bit Home Premium for System Builders Single Pack DVD - OEM $94.99
- Arctic Silver 5 Thermal Compound - OEM $5.99
- Tuniq Tower 120 P4 & K8 CPU Cooler - Retail $49.99
For now, I excluded the video cards. $700 or so should be enough for a nice pair of the new ATI cards
. If they turn out more expensive, drop 4GB of the RAM. Note that I included a beefier PSU: I don't know how power hungry the new ATI cards will be, and this one is modular also. However, this would be my second item to drop if the video cards exceed $700 for a pair. The 750TX recommended earlier is very nice