I thought I'd throw my thoughts into this thread.
Seeing as you will have to replace your RAM if you go with and Athlon X2 setup then I would advise going with a Pentium D (2.8GHz) instead.
The Pentium D 9** series is much better than the older 8** series as it has twice the amount of cache and is on a 65nm process as opposed to 90nm. Basically the screw ups on the 8** series have been worked out and due to the 65nm process you should easily be able to hit 4GHz.
The Pentium D 920 is cheaper than the Athlon 64 X2 3800+
You won't have to sell you RAM and downgrade to DDR as your current RAM will work with the Pentium D.
From reading your previous Far Cry 32-bit vs 64-bit thread it appears to me a reason for the upgrade is to have a 64-bit capable CPU, both the Athlon X2 3800+ and Pentium D 920 will be ok for this as they both have their own 64-bit technologys.
If you decide to opt for a Pentium D then I would recommend switching your current motherboard for either an Intel 955/975 chipset of Nvidia nForce4 chipset.
t4ct1c47... i hate you
i was all set to buy the x2 3800+. you're right, i want a 64bit-ready CPU, but i'd also like to have a dual core cpu. the intel 920 is cheaper, but not that much.
i see that you are an Intel afficionado, so you may be biased in your suggestion
but i don't care about that. what i really want to know is what kind of result i'll have between the x2 3800+ and the intel D 920. according to the CPU chart from tomshardware.com
, the x2 3800+ will have better results.
anyway, i still have a good long month before i sell the stuff, so, i'm waiting for any further comments.