The best card I would combo with a puny Core 2 Duo 3Ghz is this Asus 7790 $110 ($70 AR). It's close to 7850 performance for $50 less. Grab it before it goes out of stock.
Make sure the PC's power supply has at least one 6-pin PCIe connector.
I think a 7790 is a pretty darn good choice at that price, especially since it uses a lot less power than a 7870 and 7850. That way you would not have to worry about having to upgrade the PSU to accomodate a 7870 or 7850. A 7790 only uses about 80W at full load.
If your choices are limited to those that you posted, I would say 7870 is your best option.
I wouldn't say I am limited budget wise it's just the guy doesn't play graphic intensive games. Might even make more sense to give him my 560ti and I get some gtx 700 card?
Also I don't have to worry about the psu as their pc is an old build of mine.
So new card for him or new card for me? Lol
The best card I would combo with a puny Core 2 Duo 3Ghz is this Asus 7790 $110 ($70 AR). It's close to 7850 performance for $50 less. Grab it before it goes out of stock.
Make sure the PC's power supply has at least one 6-pin PCIe connector.
This, the people who recommend anything more than that for the CPUs that were listed in the OP don't have a clue how CPU limits work.
Please explain what the downfall would be if I were to get something more than a 7790?
Your CPU will be the limiting factor.
As in those more powerful GPUs won't actually make your game-play experience significantly better compared to it's potential.
You will have huge frame variance, huge increases and decreases in FPS frame by frame. And your minimum frame rate will stay right where it is in the absolute and the 99% time frame of reference.
Your GPU is a slave to your CPU. If your CPU isn't feeding the draw calls to the GPU fast enough, there's nothing the GPU can do about it but wait. This is limited by everything the CPU has to do in the game and in your system.
The playability of a game isn't determined by the average or maximum FPS that is delivered, it is determined by the minimum and the 99% frame rate of the setup.
This is because games are played in real time. You can't make up later what you lost before.
Thank you for your explanation. With that said, having an e6850 and q9550 we are both better off getting a 7700?