換機唔換ram可以嗎

市面上支援Core 2 Duo的板雖然選擇不多，但終歸還是有的。
比較容易找到的有，Asus P5PE約五百多元，還有的就是AsRock Conroe865PE，這塊更平，約五百頭左右。

不過，如果你問我的意見，我覺得如果你手上的DDR400容量不大，例如︰祇有512MB，我會建議你一次升級底板，CPU和Ram，因為此終新的平台支援會較好，可以充分發揮CPU的處理能力。

如果手上有1GB或以上的Ram，先考慮有沒有途徑可以放左佢。(例如︰二手市場，網上拍賣場等等。)然後再一次購入新的主機板，CPU和Ram。

likely no because Intel Core 2 Duo CPU usually use motherboard that support only DDR2 memory module with 186-pins. DDR400 is only standard DDR memory and only have 168-pins.

Most motherboards support DDR2 will not not have DDR slot, so it cannot use DDR400 memory.

If you find a motherboard support both, then you can re-use your DDR400 but you will not get the full benefit of newer CPU as your memory is slower.

現時市面上用倒core 2 dou的底板只可用ddr2 ram, 可留意市場有否用865 chipset的底板是支援core 2 dou. 多數都無

It is not related to the CPU verison. You should check against the mother board menu. It listed all support ram speed capacity and other information.