Now that I have a better idea of the situation, I'll go look for components.
Definitely, the CPU will be an Intel (for many reasons I can't list here, and although AMD had very valid CPU's). But you don't want a Xeon, for the simple reason you don't run a server but a desktop. Xeon architecture aims at server usage. Using a Core i3 at the top of the i3 line or one of the very first i5 will be much better for you.
That should be on a socket 1150 which will give you some time for possible upgrades before it gets obsolete.
Considering that a i3 of that kind is around 54W, you don't need anything big to cool it. It comes with a standard fan which is not a dream one but does the job correctly.
You could use -even if it's not necessary- an integrated watercooling solution for the CPU. I've been using one for more than three years now. (See here:
http://www.athenpaladins.org/forums/vie ... =45&t=6715 ). Those devices work very well now (the very first ones could have been better) and it's simple to install.
Going for watercooling on the GPU would be more complicated and it's certainly NOT cost-conscious. Also it could restrict your choice on graphic cards.
Regarding RAM, you will have to confirm it's DDR 3. (It likely is, unless the PC is very old). If you give information on your current CPU and other stuff, we can guess the RAM type without problem.
Although Intel "i" series include a graphic controller, you will need, for games, a graphic card. I want to reassure you, the situation is way "cleaner" on desktops than on laptops and having two graphic devices on a desktop doesn't pose the problem it does on laptops with AO. (My own computer has an integrated graphic processor too, along with a Nvidia 570, same link as above).
You may want to use your old PC case but as I have no idea how it's made, I will come with a suggestion for a very good and inexpensive case, under 40 euros (Cooler Master) or even under 30 (Zalmann).
The PSU remains a touchy point. Contrary to popular belief "power is just power", the quality of a PSU and the current it delivers is important, especially as the quality of PSU's is affected by time. Mayny generic-brands PSU's are really poor. So we'll see that. Anyhow, good news is that, with modern components and especially the ones we're looking into for you, you don't need much power.
Be back later with the info.
