so which is better? and please give me some idea on what motherboard to buy
i have a 7850 xfx double DD video card
i would like to overclock
and i play heavy graphics games such as bf4/bf3/starcraft 2 etc.
My generic post cpoy-paste that everyone has seen 1000 times:
The difference between AMD and intel for gaming.
Firstly, you need to decide what your priorities are, and what you will use the PC for.
Things such as: light gaming, heavy gaming, basic work (e.g. MS Office), heavy work (e.g. video editing, 3d modeling). For the most part in current games the biggest difference will be made by the selection of the GPU. Get a great GPU + worse CPU rather than worse GPU + great CPU.
The AMD FX CPU's have many cores, which are weaker.
intel i5's have less cores, which are stronger.
The intel's consequently have better performance per core. In older games, the intels perform much better as those games are optimised for good performance with only a few cores (single-threading).
In newer games, the AMD FX's really shine due to the introduction of games using more cores (multi-threading).
The difference comes in depending on what you want to use the PC for. If you're on a tight budget, save some money and go with the AMD and spend the extra money on a better GPU that will give you better performance than any CPU could.
i5: Good for older games (single-threaded), Good for newer games (multi-threaded), Good for general work, great all-round CPU and probably the best around for current games (may change in future).
AMD: Slightly worse for older games (single-threaded), Great for newer games (multi-threaded e.g. BF4, Crysis 3), Good for light/heavy work, extra cores are great for 3d modeling and video editing or rendering, great CPU whilst costing much less than the intel. Even though it's worse in older games it will run them perfectly well and smoothly.
Regardless, both will perform well.
For an i5, I would recommend an i5 3570k or a 4670k. Why? They are king for gaming performance at the moment and since they are the k version they are unlocked and can be overclocked in future for a performance boost.
For an AMD, I would recommend a FX 6300/8320/8350 [Do NOT go with a bulldozer CPU, only piledriver. List here: http://en.wikipedia.org/wiki/Piledriver_(microarchitecture) <-- That should all be one link, not sure why it splits.]. Why? Great multi-threaded performance for newer games and heavy work, are just fine in older games (not overkill, can deliver smooth frame rates maxed with a good GPU), and are great for productivity with a tame pricetag.
In conclusion, budget gaming/work: AMD. Not on a budget gaming/work: i5. The i5 currently delivers better performance but don't get the impression that the AMD is lagging behind. They are great for gaming and work with a really great pricetag, just not currently up there with intel. In newer games though such as BF4 the AMD's have caught up in performance and in some cases deliver better performance than the intel's for much less money. You will get great, smooth FPS with either.
Either solution will game just fine with a nice GPU, focus mainly on that.
You have a 2nd gen i5 then. I would just get a replacement board for that CPU. Sandy Bridge i5's are still good gaming CPU's. You can pick up a Z77 extreme 4 for like $100 now. While your i5 is probably a locked one, you will have the flexibility of SLI and CF. Also you can manually overclock a little on your current i5. I did with my i5 2400.
Honestly not really. I mean yes there is a bit but its nothing that I would even consider worth spending anywhere near 300+ dollars on.
Taking a look at your original rig listing What I would do is grab a 100 dollar mobo, such as the one logain has listed, then if you want to spend some more money to get better performance you can either 1: grab another 7850 and possibly a new psu (not sure what yours is) OR sell off your 7850 then grab something higher end such as a 760/770/7970/etc