Test System Specs

Hardware - Intel Core 2 Duo E8400 (3.00GHz) LGA775 - Intel Core 2 Duo E6850 (3.00GHz) LGA775 - Intel Core 2 Extreme QX9650 (3.00GHz) LGA775 - x2 OCZ DDR3 PC3-14400 Platinum Edition (DDR3-1800) Module(s) - Seagate 320GB 7200-RPM (Serial ATA300) - ASUS GeForce 8800 GTX (768MB) - ASUS P5E3 Deluxe (Intel X38) Software - WinXP 32bit - Microsoft Windows XP Pro (SP2) - Intel System Driver 8.4.0.1016 - Nvidia Forceware 169.09

The memory bandwidth performance of the E8400 is much the same as the E6850, which was to be expected given that both processors are using the same DDR3-1333 memory on a 1333MHz FSB at the same clock frequency. The quad-core QX9650 has a slight performance advantage here, though SiSoftware Sandra only shows a 500MB/s bandwidth increase over the E8400 and E6850 processors.