It is a dual core CPU but it's performance is quite a bit lower than a C2D processor. If you could upgrade to a Core2Duo that would be a big jump in performance.
Thanks for the quick response. From what I understand, the XPS 400 does not support Core 2 Duo processors - although the chip is the same, the necessary BIOS update is unavailable. I have read that replacing the motherboard easily fixes this problem though, as it's the Dell motherboard that causes it....It is a dual core CPU but it's performance is quite a bit lower than a C2D processor. If you could upgrade to a Core2Duo that would be a big jump in performance.
And thanks for researching it, bud. I don't think the mistake is with Intel and 945P...I think it's specifically with Dell. From what I understand, they never configured the BIOS of the xps 400 to be compatible with Core2Duo, even though the 945P (used by the 400) is compatible.On Intel's site they list Core2Duos as being supported on the 945P. Maybe it's just incorrect but that's why I mentioned it.