I'm running a P4 2.4C computer and using DDR 400. I'm planning to buy DDR2 800 for my conroe, are they a good fit for each other? I saw a special deal on a 2GB kit, an OCZ Gold DDR2 800 on Monarch for $200 and there's a rebate for $40 off on that too. I've been looking at prices on DDR2 800 for the past week, I'm wondering if this deal is too good to pass up? I don't like rebates, but this is so tempting. Should I hit it?