I did think that SKT 775 boards were DDR2 but i could be wrong
post your motherboard model and we can check to be sure.
------------------------------2700K @ 4.5 | Maximus IV Extreme-Z | 16gb RipjawX DDR3 1866mhz | 2x 2GB 5870's | Eyefinity @ 5760*1080 | 2x WD Black 1TB Raid 0 | EK&XSPC Water Cooled | Thermaltake 1200w PSU | Thermaltake Tai-Chi Case
No liability accepted or warranty given for advice Reply to hugostiglitz
Depends on if your board can take it. I have an older core 2 duo system with an e8400 and it takes ddr3 sticks, while my dad has a system that is with a core 2 quad that can only take ddr2.
------------------------------Nap time!-amdfangirl Reply to amuffin