We need more information. What kind of motherboard are you using now? What's the socket? Which CPU? What kind of addin cards are you using (if any).
A great system tool is speccy (
www.piriform.com) just run the program and go to File > Save As Text File and then post the results here. I've included my work system's as an example.
Summary
Operating System
MS Windows 7 Enterprise 64-bit
CPU
Intel Core i7 920 @ 2.67GHz 48 °C
Bloomfield 45nm Technology
RAM
6.0GB Triple-Channel DDR3 @ 668MHz (8-8-8-24)
Motherboard
ASUSTeK Computer INC. P6T DELUXE V2 (LGA1366) 45 °C
Graphics
SMEX2220 @ 1920x1080
SyncMaster @ 1680x1050
1024MB GeForce 9500 GT (EVGA) 47 °C
Hard Drives
39.1GB INTEL SSDSA2M040G2GC ATA Device (SATA)
733GB Western Digital WDC WD7501AALS-00E3A0 ATA Device (SATA) 34 °C
Optical Drives
HL-DT-ST DVDRAM GH22NS50 ATA Device
DWBYVQ 1UZCX6N89M7W SCSI CdRom Device
Audio
High Definition Audio Device