I have run Win 7 64-bit on system with Quad core and 4GB of RAM hardly ever maxed out. My current system is Dual Core with 6GB of RAM and rarely max out and if I do it's usually a problem with another program not Windows 7. Curious.
System Manufacturer/Model Number Lenovo 9979A11 OS Windows Pro 7 64-bit CPU Intel Core 2 Duo Motherboard Lenovo Memory 8 GB DDR2 Graphics Card Onboard; Intel(R) Q35 chipset Sound Card onboard... High Def Audio Monitor(s) Displays Acer V173 Screen Resolution 1280 X 1024
Keyboard general Mouse general PSU N/A onboard vid; Intel Q35 Chipset Case Mini Cooling Native Intel Core 2 Duo fan & Heatsink; 2 case fans Hard Drives 160 GB WD (XP)
320 GB Samsung (7)
500 GB Samsung (storage)
320 Iomega External (backup & storage) Internet Speed Cable Other Info Windows 7 Pro 64-bit