A hard choice to be sure. A two part choice as well. You have an out-dated system.
In order to move up you need to do a new system almost entirely except for the
case. To do the best AMD system you will spend about as much as an Intel one.
That is assuming you do it at one time(which you won't) so it will cost more than
an Intel will cost. I've heard that some games don't recognize Sli so if that is true
you would be hurting yourself that way also.
Games will work on 4G Ram but they do play better on 8G so you need a 64 bit
O.S.
AMD only has Pci 2.0 so using a 3.0 card on one keeps you from getting the full
potential from your GPU. You have two choices with AMD, neither of which seem
to fit what you want. The inexpensive boards have out-dated chip sets and only
one Pci express slot. The Better boards are $140.00 up. I have known people
who had good rigs(for gaming) that had the inexpensive boards though if you
decide that one card is best.
So then it's down to the CPU's. AMD has three actually good CPU's unless you
get one from e-Bay (the 970 and 975 are there). The 965 may not satisfy you
forever since you know that there are two that are better than it just waiting for
you out there. While the FX 4170 does deserve honorable mention one has to
ask themselves why buy a CPU that just is equal(almost) to the 965 when I
can get two that are better than the 965 ? Actually there are more than two but
why again get a CPU that has other models in the same line which are better
when you are up-grading. Just wait till you can get the top one in that model
and be done with it. Till then use what you have. So from the 965 you would
want to go to either the FX4300 which doesn't make much sense if the six
core FX 6300 cost only $10 more and gets a better rating on Tom's Hardware
CPU charts. Or the other logical choice is the FX 8350 but cost $200.
So then your up into spending the Intel money and why not do Intel and get
the Pci 3.0 ?
You have Intel so I don't know if you are thinking AMD or not but just in case
I thought you might like to know those things. I started/w AMD so I did it
when I up-graded. Have a two core AMD Phenom(to get started cheap)
but am holding out for the FX6300.
I would think your most logical way to go would be to get a decent board,
CPU, Ram and O.S. now (Intel) and wait till later, using your GPU till you
can buy a better one. Then get the better one and a case to put all the good
parts into returning the old GPU to the original rig and sell it or keep it as
a second computer.
This is the board I've seen used/w the AMD budget rigs.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128565
These are the most common boards for the Intel mid range rigs.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131823
For one GPU slot or this for two.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131837
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157293
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128544
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128546
And this/w one slot.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128543